Consulta: subjectFacets:"Drought tolerance"
Registros recuperados: 33
Data/hora: 06/06/2024 04:30:55

Selección de lineas de frijol tolerantes a la sequía con base en respuestas de la planta al estrés hídrico
Provedor de dados: 32
Autores: Rodríguez García, María Nicolasa.
La complejidad de las respuestas de la planta de frijol al estrés hídrico ha dificultado el mejoramiento para tolerancia a sequía, entre otros factores, por la falta de indicadores o criterios fenotípicos confiables, prácticos y repetibles para la selección. La presente investigación se realizó en dos etapas. La primera comprendió la selección en diferentes niveles de estrés hídrico para obtener germoplasma con respuestas diferenciales a la sequía (Capítulo III y IV); y la segunda se proyectó para estudiar las causas de las diferencias en las respuestas a la sequía (Capítulo V). Con tal fin, se utilizó una población segregante de 95 líneas recombinantes F7 derivadas de la generación F3 del cruzamiento AC1028 x Pinto Sierra. Se evaluaron  componentes de...
Tipo: Tesis
Palavras-chave: Frijol; Selección de líneas; Respuesta de plantas; Tolerancia a sequía; Doctorado; Genética; Dry bean; Lines selection; Plant responses; Drought tolerance.
Ano: 2008
URL: http://hdl.handle.net/10521/1662

QTL mapping for physiology, yield and plant architecture traits in cotton (Gossypium hirsutum L.) grown under well-watered versus water-stress conditions
Provedor de dados: 69
Autores: Saeed,Muhammad; Guo,Wangzhen; Ullah,Ihsan; Tabbasam,Nabila; Zafar,Yusuf; Mehboob-ur-Rahman,; Zhang,Tianzhen.
Increasing scarcity of irrigation water is a major threat to sustainable production of cotton (Gossypium hirsutum L.). Identifying genomic regions contributing to abiotic stress tolerance will help develop cotton cultivars suitable for water-limited regions through molecular marker-assisted breeding. A molecular mapping F2 population was derived from an intraspecific cross of the drought sensitive G. hirsutum cv. FH-901 and drought tolerant G. hirsutum cv. RH-510. Field data were recorded on physiological traits (osmotic potential and osmotic adjustment); yield and its component traits (seedcotton yield, number of bolls/plant and boll weight); and plant architecture traits (plant height and number of nodes per plant) for F2, F2:3 and F2:4 generations under...
Tipo: Journal article
Palavras-chave: Composite interval mapping; Cotton; Drought tolerance.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000300003

A legume genomics resource: The Chickpea Root Expressed Sequence Tag Database
Provedor de dados: 69
Autores: Jayashree,B; Buhariwalla,Hutokshi K; Shinde,Sanjeev; Crouch,Jonathan H.
Chickpea, a lesser-studied grain legume, is being investigated due to its taxonomic proximity with the model legume genome Medicago truncatula and its ability to endure and grow in relatively low soil water contents making it a model legume crop for the study of agronomic response to drought stress. Public databases currently contain very few sequences from chickpea associated with expression in root tissues. However, root traits are likely to be one of the most important components of drought tolerance in chickpea. Thus, we have generated a set of over 2800 chickpea expressed sequence tags (ESTs) from a library constructed after subtractive suppressive hybridization (SSH) of root tissue from two closely related chickpea genotypes possessing different...
Tipo: Journal article
Palavras-chave: Cloning; Data mining; Drought avoidance; Drought tolerance; EST database; Root traits; Stress.
Ano: 2005
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000200002

Drought resistance of sugar-cane crop for different levels of water availability in the soil
Provedor de dados: 70
Autores: Barbosa,Fernando da S.; Coelho,Rubens D.; Maschio,Rafael; Lima,Carlos J. G. de S.; Silva,Everaldo M. da.
Soil water availability is the main cause of reduced productivity, and the early development period most sensitive to water deficit. This study aimed to evaluate the drought resistance of the varieties of sugar-cane RB867515 and SP81-3250 during the early development using different levels of water deficit on four soil depths. The experiment was conducted at the Department of Biosystems at Escola Superior de Agricultura "Luiz de Queiroz" (ESALQ/USP) in a greenhouse in soil classified as Oxisol, sandy loam texture (Series "Sertãozinho"). Once exhausted the level of available water in the soil, the dry strength of the studied strains are relatively low. Water balance with values less than -13 mm cause a significant decrease in the final population of plants,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Irrigation; Plant population; Saccharum spp.; Drought tolerance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000200002

Impact of mycorrhizae and irrigation in the survival of seedlings of Pinus radiata D. Don subject to drought
Provedor de dados: 73
Autores: ATALA,CRISTIAN; MUÑOZ-CAPPONI,EDGARDO; PEREIRA,GUILLERMO; NAVARRETE,EDUARDO; OSES,RÓMULO; MOLINA-MONTENEGRO,MARCO.
In drought condition, plants increase survival chance by adjusting their functional traits and by biological associations. Mycorrhizae association and artificial watering have been shown to increase plant survival under drought, especially at early developmental stages when plants are more susceptible. In Chile, Pinus radiata is the most important forest species. It is grown mainly in Central Chile, where precipitations are predicted to drop in 40% and change in frequency in the future due to climate change. Rhizopogon luteolus is an ectomycorrhizae usually associated with Pinus species and has been found to increase drought tolerance. We addressed the effect of R. luteolus inoculation on survival and functional traits of P. radiata seedlings exposed to...
Tipo: Journal article
Palavras-chave: Pinus radiata; Rhizopogon luteolus; Climate change; Ectomycorrhizae; Drought tolerance.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432012000200009

Patterns of tree seedling mortality in a temperate-mediterranean transition zone forest in Chile
Provedor de dados: 73
Autores: PARADA,TERESA; LUSK,CHRISTOPHER H.
Seedling mortality in forests is the net result of an array of processes that vary spatially and temporally. We quantified emergence and mortality of seedlings at monthly intervals for two years, in a forest situated in the transition zone between the Mediterranean and temperate regions of Chile. We aimed to determine if survival of species responded differentially to seasonal water availability, to the spatial variation in light availability and to seedling density. The commonest species in the seedling bank were the Mediterranean-climate species Cryptocarya alba (61%) and the temperate-climate species Aextoxicon punctatum (29%). 279 of the 504 new seedlings that emerged during the two-year study died during the same period, corresponding to 55,4%...
Tipo: Journal article
Palavras-chave: Aextoxicon punctatum; Cryptocarya alba; Density-dependent mortality; Drought tolerance; Shade tolerance.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432011000200015

Introducao e avaliacao de forrageiras em "cordilheira" desmatada na sub-regiao dos Paiaguas, Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: COMASTRI FILHO, J. A.; POTT, A.
O presente trabalho foi conduzido, em area de "cordilheira", na parte central da sub-regiao dos Paiaguas, do Pantanal Mato-Grossense. Os solos sao formados por sedimentos arenosos aluviais e na maior parte sao de baixa fertilidade. Entre 1980 e 1985, foram introduzidas e avaliadas 51 gramineas e 105 leguminosas, com o objetivo de identificar forrageiras adaptaveis as condicoes ecologicas da regiao. Para cada cultivar e/ou especies foram utilizadas duas parcelas de 1,5 x 3,0m com adubo (CA) e sem adubo (SA). O rendimento de materia seca de CA foi superior ao de SA apenas no primeiro ano. Segundo o indice de avaliacao (IA), no dominio de 0 a 3, as forrageiras mais promissoras se encontraram nos generos Andropogon, Brachiaria e Calopogonium. Das gramineas, a...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Forrageira; Cordilheira; Tolerancia a seca; Pasture; Wetland.; Gramínea; Pastagem; Planta; Semente.; Pantanal; Grasses; Drought tolerance; Forage; Legumes.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/790955

Sugarcane: drought tolerant sugarcane variety.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Genetically modified sugarcane with increased tolerance to high environmental temperatures and prolonged water restriction.
Tipo: Folders
Palavras-chave: Cana de Açúcar; Melhoramento Genético Vegetal; Sugarcane; Genetic improvement; Drought tolerance.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1132976

Portfólio de convivência com a seca no Semiárido.
Provedor de dados: 14
Autores: EMBRAPA.
Na Embrapa, os projetos voltados para esta temática estão agrupados no portfólio de Convivência com a Seca no Semiárido. Por meio deles são desenvolvidas pesquisas sobre a conservação e uso sustentável da biodiversidade da Caatinga, avaliação de cultivares tolerantes à seca, sistemas de integração caipiras, barragens subterrâneas, reuso de água, forrageiras para alimentação animal, uso dos solos, entre outros.
Tipo: Folders
Palavras-chave: Convivência com a seca; Convivência com a Seca no Semiárido; Semiárido; Política de Pesquisa; Programa de Pesquisa; Caatinga; Seca; Agricultura de Subsistência; Agricultura Sustentável; Vegetação Nativa; Biodiversidade; Drought; Drought tolerance; Semiarid zones; Research and development; Research policy; Research programs; Biodiversity.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1147868

Efeito do estresse hídrico e variabilidade genética na arquitetura da raiz de soja.
Provedor de dados: 14
Autores: GONCALVES, S. L.; CATTELAN, A. J.; NEPOMUCENO, A. L.; OLIVEIRA, M. C. N. de; NEUMAIER, N.; FUGANTI-PAGLIARINI, R.; FERREIRA, L. C.; NASCIMENTO, W. B. da S.
bitstream/item/160125/1/Boletim-de-PD-12.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Tolerância à seca.; Soja; Raiz.; Soybeans; Roots; Drought tolerance.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1069863

Elementos para formulação de um programa de convivência com a seca no Semi-Árido brasileiro.
Provedor de dados: 14
Autores: GUIMARÃES FILHO, C.; LOPES, P. R. C.; SILVA, P. C. G. da.
Em função da profunda diversidade de condições agroecológicas e sócioeconômicas que caracteriza a região semi-árida e da extrema complexidade que envolve a natureza dos fatores responsáveis pela condição de pobreza das comunidades que nela habitam, a concepção de um programa de convivência com a seca requer, antes de tudo, uma visão abrangente na definição do caminho a ser seguido. A sua execução, portanto, exigirá uma ampla ação cooperativa transdisciplinar e multiinstitucional. A base para o desenvolvimento econômico e social do Semi-Árido e, por conseguinte, o conviver com seca, não deve se limitar ao desenvolvimento da atividade agrícola. Este deve estar associado ao crescimento das atividades econômicas rurais (agrícolas e não agrícolas) que se...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Convivência com a seca; Semiárido; Desenvolvimento local; Espaço agronômico; Produção local; Seca; Resistência a Seca; Alimentação Na Seca; Recurso Natural; Desenvolvimento Sustentável; Projeto de Desenvolvimento; Desenvolvimento Socio-Econômico; Social environment; Rural development; Rural economics; Rural policy; Drought; Drought tolerance.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1093481

Estudo de tolerância à seca em feijão.
Provedor de dados: 14
Autores: MAGALHÃES, A. A.; MILLAR, A. A.
Contribuição do Convênio Embrapa/Codevasf. Projeto PNUD/FAO/BRA 74008. Neste trabalho estudou-se a tolerância à seca em feijão, Cultivar IPA 74-19. O Experimento foi conduzido no Campo experimental do Bebedouro - Petrolina - PE.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Tolerância a seca; Feijão; Resistência a Seca; Sistema de Cultivo; Irrigação; Phaseolus; Irrigation; Runoff irrigation; Drought tolerance.
Ano: 1977
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/159473

USO da camaratuba em agroecologia.
Provedor de dados: 14
bitstream/item/95563/1/Uso-camaratuba.mp3
Tipo: Prosa Rural (INFOTECA-E)
Palavras-chave: Camaratuba; Resistência a seca; Leguminosa; Drought tolerance; Legumes.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/976749

Introducao e avaliacao de forrageiras em "cordilheira" desmatada na sub-regiao da Nhecolandia, Pantanal Mato-Grossense.
Provedor de dados: 14
Autores: COMASTRI FILHO, J. A.; POTT, A.
A bovinocultura de corte, principal atividade economica da sub-regiao da Nhecolandia, do Pantanal, devido, principalmente, a problemas nutricionais, apresenta baixos indices de produtividade. A alimentacao dos bovinos e constituida de pastagens nativas, geralmente de produtividade ou valor nutritivo baixos e de baixa disponiblidade nos meses de cheia. Face a esta situacao, o CPA-Pantanal, entre 1980 e 1985, realizou um experimento de introducao e avaliacao da forrageira em area de "cordilheira" desmatada com o objetivo de identificar gramineas e leguminosas adaptaveis as suas condicoes ecologicas. As forrageiras (43 gramineas e 123 leguminosas) foram plantadas em parcelas de 1,5 x 3,0 m. Foram utilizadas duas parcelas, por local, para cada especie, uma com...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Planta graminea forrageira; Cordilheira; Resistencia a pragas; Resistencia a doencas; Tolerancia a seca; Plant; Grass; Pasture.; Gramínea; Leguminosa; Pastagem; Produção.; Pantanal; Forage; Disease resistance; Drought tolerance; Legumes; Pest resistance.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/789742

Production of 'Valência' sweet orange on 41 rootstocks in the north of the state of São Paulo, Brazil
Provedor de dados: 86
Autores: Fadel,André Luiz; Mourão Filho,Francisco de Assis Alves; Stuchi,Eduardo Sanches; Ramos,Yuri Caires.
Abstract: The objective of this work was to select alternative rootstocks to 'Rangpur' lime for 'Valência' sweet orange scions in the northern region of the state of São Paulo, Brazil, based on initial fruit yield. Forty-one rootstocks were evaluated in an experiment carried out in March 2007, in the municipality of Colômbia, in the state of São Paulo. The accumulated fruit yield of 'Valência' sweet orange was assessed in the 2009, 2010, and 2011 crop seasons. The rootstocks 'Sunki' mandarin x Poncirus. trifoliata 'English', 'Malvasio SRA 115' mandarin, 'C-13' “S&amp;#8221; citrange, 'Sunki' mandarin x P. trifoliata 'Benecke', 'Valência Rhode Red' sweet orange + 'Volkamer' lemon, 'C-54-4-4 SRA 337' mandarin, 'Cleopatra' mandarin x P. trifoliata 'Rubidoux',...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Citrus limonia Osbeck; Citrus sudden death; Drought tolerance; 'Rangpur' lime.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600774

Stomatal conductance of maize under water and nitrogen deficits
Provedor de dados: 86
Autores: Medici,Leonardo Oliveira; Azevedo,Ricardo Antunes; Canellas,Luciano Pasqualoto; Machado,Altair Toledo; Pimentel,Carlos.
The objective of this work was to evaluate the effect of drought and nitrogen (N) stresses on stomatal conductance of three maize cultivars grown in the field. The stomatal conductance of Sol da Manhã variety (BRS 4157) and Pioneer 6875 hybrid, under drought and high N, was lower than under drought and low N, which indicates drought tolerance, since these cultivars did not exhibit reduction in grain yield by drought, as observed for Amarelão variety, which flowered under more severe drought. 'Sol da Manhã' exhibited shorter anthesis-silking interval under high N than under low N, an additional indication of tolerance.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Drought tolerance; Anthesis-silking interval.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000400020

Are U.S. Corn and Soybeans Becoming More Drought Tolerant?
Provedor de dados: 31
Autores: Yu,   Tian; Babcock,   Bruce A.
An objective drought index that measures the dry and hot conditions adversely affecting crop yields is used in a regression analysis to test whether corn and soybeans have become more drought tolerant. Results indicate that corn yield losses, whether measured in quantity terms or as a percentage of mean yield, have decreased. The null hypothesis that the absolute level of soybean yield losses due to drought has not changed cannot be rejected. But yield losses in percentage terms have decreased over time. Because drought is the primary cause of yield loss in the U.S. crop insurance program and because U.S. crop insurance rates assume that percentage of yield losses are constant over time, these results indicate that U.S. crop insurance rates in the Corn...
Tipo: Working or Discussion Paper
Palavras-chave: Corn; Crop insurance rates; Drought tolerance; Soybean; Yield risk; Crop Production/Industries; Productivity Analysis; Risk and Uncertainty.
Ano: 2009
URL: http://purl.umn.edu/54147

Modifications in vapor diffusion resistence of leaves and water relations in barbados cherry plants under water stress
Provedor de dados: 93
Autores: NOGUEIRA,REJANE J. MANSUR C.; MORAES,JOSÉ ANTÔNIO P. V. DE; BURITY,HÉLIO ALMEIDA; BEZERRA NETO,EGÍDIO.
Young sexually and assexually propagated Barbados cherry plants were submitted to water deficit (20 days without irrigation). During this period the accumulation of proline, water potential of branches, osmotic potential, the relative water content of leaves, the leaf diffusive resistance, the transpiration rate and leaf temperature in the cuvette were determined. In addition, photosynthetically active radiation (PAR) and vapor pressure deficit (VPD) were measured in the porometer cuvette. The concentration of proline for both types of plants began to increase on the fifth day without watering, and reached 38.1 times the concentration in the control plants grown from seeds and 26.4 times the concentration in grafted plants on the tenth day without...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Malpighia emarginata; Drought tolerance; Grafting; Proline; Transpiration; Vegetative propagation.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100009

PERFORMANCE OF ‘TUXPAN VALENCIA’ SWEET ORANGE GRAFTED ONTO 14 ROOTSTOCKS IN NORTHERN BAHIA, BRAZIL
Provedor de dados: 94
Autores: FRANÇA,NATIANA DE OLIVEIRA; AMORIM,MAURICIO DA SILVA; GIRARDI,EDUARDO AUGUSTO; PASSOS,ORLANDO SAMPAIO; SOARES FILHO,WALTER DOS SANTOS.
ABSTRACT  In the State of Bahia, Brazil, the citrus industry is located on the north coast with the prevalence of the combination ‘Pera’ sweet orange on ‘Rangpur’ lime. Scion-rootstock diversification may contribute to the increase of yield and the extension of harvest season, as long as to decrease the risk associated to abiotic and biotic stresses. Therefore, the performance of ‘Tuxpan Valencia’ sweet orange grafted onto 14 rootstocks was evaluated in Rio Real – BA. Planting was performed in 2006 under rainfed cultivation on cohesive ultisol and tree spacing of 6.0 m x 4.0 m. Tree size, yield and fruit quality were evaluated in the period of 2010-2014, in addition to tree survival at nine years old and drought tolerance in the field based on leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus spp.; Poncirus trifoliata; Drought tolerance; Fruit quality; Yield.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000400702

YIELD AND QUALITY OF ‘PERA’ SWEET ORANGE GRAFTED ON DIFFERENT ROOTSTOCKS UNDER RAINFED CONDITIONS
Provedor de dados: 94
Autores: SAMPAIO,ANTONIO HÉLDER RODRIGUES; COELHO FILHO,MAURÍCIO ANTONIO; SOUZA,LAERCIO DUARTE; BRITO,RALPH BRUNO FRANÇA; SILVA,ROBERVAL OLIVEIRA DA.
ABSTRACT  This study aimed to evaluate, under field conditions, different combinations between ‘Pera’ sweet orange and eight rootstocks: ‘Rangpur’ lime (RL), ‘Volkamer’ lemon (VL), ‘Cleopatra’ mandarin (CM), ‘Sunki Maravilha’ mandarin (SMM), ‘Indio’ and ‘Riverside’ citrandarins, and VL x RL (‘Rangpur’ lime)-010 and TH-051 hybrids. The soil water matric potential (?m) was characterized for all scion-rootstock combinations at distance of 1.0m from the trunk at the plant row direction and depths of 0.25 m, 0.50 m 0.90 m in the dry and wet seasons. For two years, fruit production parameters and fruit quality were assessed. Differences of Ym among scion-rootstock combinations were observed during the dry season (p=0.05). The lowest Ym values for RL and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus; Matric potential; Drought tolerance; Rootstock.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452016000301001

Stomatal responses of Eucalyptus species to elevated CO2 concentration and drought stress
Provedor de dados: 63
Autores: Lima,Walter de Paula; Jarvis,Paul; Rhizopoulou,Sophia.
Five species of Eucalyptus (E. grandis, E. urophylla, E. camaldulensis, E. torelliana, and E. phaeotrica), among the ten species most commonly used in large scale plantations, were selected for studies on the effects of elevated CO2 concentration [CO2] and drought stress on stomatal responses of 2.5-month old seedlings. The first three species belong to the subgenus Smphyomyrtus, whereas the fourth species belongs to the subgenus Corymbia and E. phaeotrica is from the subgenus Monocalyptus. Seedlings were grown in four pairs of open-top chambers, arranged to have 2 plants of each species in each chamber, with four replications in each of two CO2 concentrations: 350 ± 30 mumol mol-1 and 700 ± 30 mumol mol-1. After 100 days in the chambers, a series of gas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus physiology; Water use efficiency; Drought tolerance; CO2 adaptation.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200005

Water-deficit tolerant classification in mutant lines of indica rice
Provedor de dados: 63
Autores: Cha-um,Suriyan; Yooyongwech,Suravoot; Supaibulwatana,Kanyaratt.
Water shortage is a major abiotic stress for crop production worldwide, limiting the productivity of crop species, especially in dry-land agricultural areas. This investigation aimed to classify the water-deficit tolerance in mutant rice (Oryza sativa L. spp. indica) genotypes during the reproductive stage. Proline content in the flag leaf of mutant lines increased when plants were subjected to water deficit. Relative water content (RWC) in the flag leaf of different mutant lines dropped in relation to water deficit stress. A decrease RWC was positively related to chlorophyll a degradation. Chlorophyll a , chlorophyll b , total chlorophyll , total carotenoids , maximum quantum yield of PSII , stomatal conductance , transpiration rate and water use...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ward cluster analysis; Drought tolerance; Fertile grain; Photosynthetic pigments; Water relation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000200008

การติดเชื้อรา Aspergillus flavus และการปนเปื้อนสารอะฟลาทอกซินในถั่วลิสง 6 พันธุ์เมื่อกระทบแล้งในช่วงปลายของการเจริญเติบโต
Provedor de dados: 106
Autores: Ratanaporn Koolachart; Teerayoot Girdthai; Sanun Jogloy; Nimitr Vorasoot; Sopone Wongkaew; Aran Patanothai.
End of season drought at pod filling and maturity stages can severely reduce yield and increase the risk of aflatoxin contamination. Peanut varieties with resistance to drought may reduce Aspergillus flavus infection and aflatoxin contamination. The objectives of this study were to investigate the effects of late season drought during  80 days after planting (DAP) until harvest on A. flavus infection and aflatoxin contamination and to estimate the correlation coefficients between traits related to aflatoxin contamination and the correlation coefficients between traits related to drought resistance (SPAD chlorophyll meter reading (SCMR) and specific leaf area (SLA)) and traits to aflatoxin contamination (A. flavus infection and aflatoxin contamination) of 6...
Tipo: Collection
Palavras-chave: Arachis hypogaea L.; Aflatoxin; Drought tolerance; Peanut; Aspergillus flavus; ถั่วลิสง; อะฟลาทอกซิน; การปนเปื้อนเชื้อรา; ผลกระทบแล้ง; การทนแล้ง; ระยะสร้างฝัก; ผลผลิต; พันธุ์.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5109

การเปรียบเทียบพันธุ์ข้าวฟ่างเบื้องต้นเพื่อทนแล้ง
Provedor de dados: 106
5 tables
Palavras-chave: Sorghum; Drought tolerance; Yield trial; ข้าวฟ่าง; การทดสอบผลผลิต; พันธุ์ทนแล้ง.
Ano: 1986
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4388

Using drought index to assess drought tolerance in corn
Provedor de dados: 106
Autores: Tawatchai Prasatsrisupab; Patcharee Konghiran; Rawin Prathummes; Weerachai Sriyisoon; Prapart Sukjaroen; Kriangsak Suwantaradon.
4 tables
Palavras-chave: Corn; Maize; Drought index; Drought tolerance; ข้าวโพด; พันธุ์ต้านทาน; ความทนแล้ง.
Ano: 1989
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4333

การคัดเลือกข้าวไร่พื้นเมืองทนทานต่อสภาพแล้งต้นฤดูปลูก
Provedor de dados: 106
Autores: Kittichai Narenut; Jirawat Sanitchon; Patcharin Songsri.
Upland rice occupied 47 percent of rice production area of the northern Thailand. Production of upland rice is facing with drought particularly in early stage of growth. This study was aimed at evaluation of indigenous upland rice for early drought resistance. The experiment was conducted in greenhouse. One hundred and eighty  seven upland rice varieties including ULR 135 (resistant check) were grown in plastic pots. Randomized complete block design with 2 replications was laid out. Seeds were sown in pots under greenhouse condition. Two seedling were let to grow in each pot. Early drought was performed at 28 days after planting (DAP) for 17 days. Leaf rolling  was recorded at 38 and 43 DAP whereas death leaf and recovery percentage was evaluated at 45 and...
Tipo: Collection
Palavras-chave: Upland rice; Drought tolerance; ข้าวไร่; ข้าวพื้นเมือง; การคัดเลือกพันธุ์; ความสามารถในการฟื้นตัว; ความทนแล้ง; การม้วนใบ; ผลผลิต; ฤดูปลูก; การปรับปรุงพันธุ์.
Ano: 2011
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5164

Optimized conditions for maize transformation of drought tolerant and herbicide resistant gene by biolistic bombardment
Provedor de dados: 106
Autores: Niran Juntawong; Panitee Saengmaneetham; Surasit Mangkorn.
4 ill., 1 table
Palavras-chave: Corn; Maize; Drought tolerance; Herbicides; Resistant gene; Biolistic bombardment; Optimized conditions; ข้าวโพด; ข้าวโพดเลี้ยงสัตว์; ข้าวโพดทนแล้ง; พันธุ์ต้านทาน; สารกำจัดวัชพืช; การถ่ายยีน.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4208

การโคลนนิ่งและหาลำดับเบสของยีนที่ตอบสนองต่อสภาวะแล้งและความสัมพันธ์ระหว่างลักษณะโครงสร้างทางกายวิภาคกับการทนทานต่อสภาพแล้งในข้าวโพด  (Zea mays L.)
Provedor de dados: 106
Autores: Niran Juntawong; Prasart Kuermanee.
Drought stress could induce expressions of various genes that are involved in stress tolerance and responses. Recent studies were emphasized on a gene encoded for the 9-cis epoxycarotenoid dioxygenase (NCED) enzyme which catalyzes the biosynthesis of abscisic acid (ABA) in plants. However, little is known about drought tolerance genes in maize. We designed primers from the VP14 sequence in the NCBI gene bank for the study of expression of drought tolerance gene in SW 2301 drought tolerant and KSX 4605 drought sensitive lines. The RT-PCR showed an expression of drought responsible gene in SW 2301 drought tolerant line. Under drought condition, the expression of the responsible gene was higher in stem apical meristem than in root and leaf tissues. The cDNA...
Palavras-chave: Zea mays; Cloning; Sequencing; Drought responsible gene; Anatomical structure; Drought tolerance; 9-cis epoxycarotenoid dioxygenase; VP14; NCED; ข้าวโพด; พันธุ์; ยีนทนแล้ง; การโคลนนิ่ง; การหาลำดับเบส; โครงสร้างทางกายวิภาค; การทนแล้ง; กรดแอบไซซิก.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4662

Sunki mandarin and Swingle citrumelo as rootstocks for rain-fed cultivation of late-season sweet orange selections in northern São Paulo state, Brazil
Provedor de dados: 53
Autores: Girardi,Eduardo Augusto; Cerqueira,Thales Sandoval; Cantuarias-Avilés,Tatiana Eugenia; Silva,Simone Rodrigues da; Stuchi,Eduardo Sanches.
ABSTRACT In Brazilian regions affected by the citrus sudden death disease, sweet orange cultivation depends on the use of resistant rootstocks. Rangpur lime was mainly replaced by Swingle citrumelo and Sunki mandarin rootstocks, more drought-sensitive ones. The diversification of scion selections is also desirable aiming at the increasing demand for not from concentrate orange juice (NFC) that requires high-quality fruits. In this work, we evaluated the performance of 6 selections of Valencia (IAC, Dom João, Late Burjasot IVIA 35-2, Rhode Red SRA 360, Temprana IVIA 25 and Campbell) and Natal IAC sweet oranges grafted onto Swingle citrumelo and Sunki mandarin. The planting occurred in 2001 under rain-fed cultivation in Bebedouro, northern São Paulo state,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus sinensis. C. sunki; [C. paradisi × Poncirus trifoliata]; Drought tolerance; Fruit quality; Production.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400501

Grain yield stability of wheat genotypes under irrigated and non-irrigated conditions
Provedor de dados: 52
Autores: Okuyama,Lauro Akio; Federizzi,Luiz Carlos; Barbosa Neto,José Fernandes.
Analyses of genotype by environment interactions were carried out for wheat genotypes grown under irrigated and non-irrigated field conditions, in two sowing dates during three years. The linear regression method was used to analyze the stability of grain yield. Genotype by environment interactions was observed for grain yield in all groups of environments. Nesser was the most productive and stable genotype in all groups of environments, followed by IAPAR 17-Caeté. In the late sowing, better yield performances were observed for the cultivars OCEPAR 7-Batuíra, IAPAR 17-Caeté and Nesser, under irrigated condition, and Nesser and IAPAR 28-Igapó, under non-irrigated condition. The results indicated that Nesser gave high grain yield with superior adaptability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Drought tolerance; Genotype by environment interaction; Water stress.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600004

Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
Provedor de dados: 52
Autores: Silva,Marcelo de Almeida; Jifon,John Lonfover; Santos,Claudiana Moura dos; Jadoski,Cleber Junior; Silva,Jorge Alberto Gonçalves da.
The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant). Sixty days after planting, two different water treatments were applied (i.e., with or without water deficit). At 0,30 and 60 days after the treatment, gas exchange variables were evaluated for their relationship with water use, intrinsic instantaneous water use efficiency and instantaneous carboxylation efficiency. The SPAD index, photosynthetic pigments, water potential and relative water content in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Photosynthesis; Stomatal conductance; Chlorophyll; Drought tolerance; Water potential.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000500004

Photosynthesis and cell respiration modulated by water deficit in grapevine (Vitis vinifera L.) cv. Cabernet Sauvignon
Provedor de dados: 61
Autores: Martim,Sílvia A.; Santos,Mirella P.; Peçanha,Anderson L.; Pommer,Celso; Campostrini,Eliemar; Viana,Alexandre P.; Façanha,Arnoldo R.; Bressan-Smith,Ricardo.
Winegrape productivity and quality has been related to the regulated deficit irrigation, with important implications for the plant bioenergetics. When water deficit is imposed to grapevine plants, alterations in overall photosynthesis and cell respiration are observed. The aim of this study was to assess the modulations promoted by water stress on photosynthesis and respiration in leaves of the cv. Cabernet Sauvignon (cv. CS) for better understanding the physiological responses related to its drought tolerance and quality improvement under water deficit. For this purpose, measurements of photosynthetic efficiency, leaf water potential, gas exchange and O2 consumption were carried out. Leaf water potential, photosynthesis, stomatal conductance,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis vinifera; Drought tolerance; Irrigation management; Respiratory chain regulation; Plant bioenergetics.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000200002

Water relations and some aspects of leaf metabolism of Jatropha curcas young plants under two water deficit levels and recovery
Provedor de dados: 61
Autores: Arcoverde,Gabriela B.; Rodrigues,Bruno M.; Pompelli,Marcelo F.; Santos,Mauro G.
Stomatal conductance (g s), transpiration (E), relative water content (RWC), superoxide dismutase activity (SOD), malondialdehyde (MDA), leaf carbohydrate soluble (LCS), free amino acids (FAA) and total protein (TP) content were measured under mild and severe drought stress in young potted Jatropha curcas L. in the greenhouse. The plants were kept for 12 days under three different water regimes, control (well hydrated), 50% irrigation control (mild stress) and 25% (severe stress), after rehydration were measured on the second and fourth day. Both mild and severe stress decreased g s and E; however, only severe stress reduced LCS, FAA and TP content and increased SOD activity (70%) and MDA content (60%) compared with the control. Moreover, under these...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biodiesel; Drought tolerance; MDA; Oxidative stress; ROS; Water deficit.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202011000200004