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Registros recuperados: 22
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A study of cold tolerance in rice (Oryza sativa L.) International Rice Research Institute
Amirkolaei, Sayyed Kamal Kazemitabar.
x, 328 leaves : ill. Thesis (Ph.D.) -- University of Liverpool
Tipo: Thesis Palavras-chave: Rice; Tissue culture; Cold tolerance; Plant breeding.
Ano: 1997 URL: http://hdl.handle.net/123456789/589
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Alterations in fatty acid composition due to cold exposure at the vegetative stage in rice Braz. J. Plant Physiol.
Cruz,Renata Pereira da; Golombieski,Jaqueline Ineu; Bazana,Maiara Taís; Cabreira,Caroline; Silveira,Taíse Foletto; Silva,Leila Picolli da.
Rice is a tropical plant, so cold temperature may be detrimental to its development, depending on the genotype and environmental conditions. Degree of lipid unsaturation has been related to cold tolerance due to its effect on membrane stability. So, the aim of this study was to characterize the fatty acid composition and its alterations due to cold temperature in rice genotypes of diversified origin. Forty-four rice genotypes at the V4 stage were submitted to two temperature conditions: 10°C and 28°C for two days and after this they had their leaves collected for lipid extraction and quantification. Control plants were allowed to regrow until presenting four leaves fully expanded and then were subjected to 10°C for ten days for cold tolerance evaluation....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L.; Lipid; Linolenic acid; Cold tolerance; Membrane stability; Plant survival.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000300007
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An analysis of morpho-agronomic traits, isozyme polymorphism, and cross compatibility of traditional rices (Oryza sativa L.) of Bhutan International Rice Research Institute
Chettri, Ganesh B..
122 leaves : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Cold tolerance; Agronomic traits; Isozymes; Polymorphism; Variety trials; Varieties; Bhutan.
Ano: 1992 URL: http://hdl.handle.net/123456789/904
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Cold Tolerance in Rice Plants: Phenotyping Procedures for Physiological Breeding. Repositório Alice
MOURA, D. S.; BRITO, G. G. de; MORAES, I. L.; FAGUNDES, P. R. R.; CASTRO, A. P.; DAUNER, S..
bitstream/item/167774/1/Giovani-Melhor-Arroz-II-PA10-02.14.01.007.00.10.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Oryza; Cold tolerance; Chlorophyll fluorescence; Rice physiology; Chilling; Extreme climate events.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081021
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Detection of a novel quantitative trait locus for cold tolerance at the booting stage derived from a tropical japonica rice variety Silewah OAK
Mori, Masahiko; Onishi, Kazumitsu; Tokizono, Yoshiro; Shinada, Hiroshi; Yoshimura, Toru; Numao, Yoshinori; Miura, Hideho; Sato, Takashi; 大西, 一光; 三浦, 秀穂.
Cold stress at the booting stage in rice induces spikelet sterility because of aberrant microspore development, which often seriously damages seed production. Some breeding lines with high cold tolerance were developed by using tropical japonica variety Silewah as a donor of cold tolerance; however, the genetic factors that confer cold tolerance of this variety have not been comprehensively analyzed. In this study, phenotypic and molecular characterization of novel cold-tolerant strains derived from crosses with Silewah was performed to identify quantitative trait loci (QTLs) responsible for cold tolerance. Molecular marker analysis revealed that 2 cold-tolerant strains carried chromosomal segments of Silewah at the same genomic regions on chromosomes 3, 4...
Palavras-chave: Oryza sativa; Cold tolerance; Booting stage; QTL; Phenotypic selection; Marker-assisted selection; Exotic germplasm.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3040
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Effect of abscisic acid, abscisic acid analogues, tetcyclacis and the combination of abscisic acid analogues and tetcyclacis on chilling resistance and transplanting stress in crops International Rice Research Institute
Flores, Ma. Agnes Abad.
117, [7] l. : ill. Thesis (Ph.D.) -- University of Santo Tomas
Tipo: Thesis Palavras-chave: Abscisic acid; Plant growth substances; Drought tolerance; Cold tolerance; Transplanting; Plant physiology; Rice; Zea mays; Cucumbers; Cotton.
Ano: 1989 URL: http://hdl.handle.net/123456789/1152
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Effect of leaf Water potential on cold tolerance of Coffea arabica L. BABT
Caramori,Lázara Pereira Campos; Caramori,Paulo Henrique; Manetti Filho,João.
Young coffee plants from cultivar Mundo Novo of Coffea arabica were grown without irrigation for 32 consecutive days, to evaluate the effect of leaf water potential on damage caused by low temperatures, under controlled conditions. A wide range of leaf water potentials were evaluated, from - 0.45MPa (wet soil) at the beginning of the experimental period, to - 4.8MPa (severe leaf wilting) at the end. Results showed that under moderate water stress, there was a higher frequency of undamaged plants and lower frequency of severely damaged plants. These results help explain part of the regional variability observed after a frost and stress the importance of new studies associating cold and drought tolerance in coffee.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cold tolerance; Coffee; Leaf water potential; Water stress.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600006
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Estimativas de parâmetros genéticos para seleção precoce de clones de Eucalyptus para região com ocorrência de geadas. Repositório Alice
MORAES, C. B. de; FREITAS, T. C. M. de; PIERONI, G. B.; RESENDE, M. D. V. de; ZIMBACK, L.; MORI, E. S..
Além de procurar o aumento da produtividade, a adaptação a solos e clima são também metas do melhoramento genético. Espécies perenes como Eucalyptus spp., possuem um ciclo muito longo e a ocorrência de geadas tornam seu cultivo limitante. O objetivo do estudo foi determinar a variabilidade genética de clones para plantio na região do município de Palma Sola, SC com eventos de geadas e determinar correlações genéticas entre idades de seleção. Um teste clonal foi instalado em 2008 no município de Palma Sola, SC no delineamento estatístico de blocos completos ao acaso, sendo avaliados 29 clones, seis repetições, seis plantas por parcela e espaçamento de 3,0 m x 3,0 m. Os caracteres silviculturais altura total de plantas, diâmetro à altura do peito (DAP) e...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Eucalyptus; Eucalipto; Espécie exótica; Melhoramento; Correlação; Seleção de clones; Tolerância ao frio; Improvement; Correlation; Clone selection; Cold tolerance.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/992100
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Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío Colegio de Postgraduados
León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres variables; y (f) comparar...
Palavras-chave: Orghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío Sorghum bicolor L. Moench; Combining ability; Heterosis; Hybrids; Cold tolerance.
Ano: 2012 URL: http://hdl.handle.net/10521/816
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Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío Colegio de Postgraduados
León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres variables; y (f) comparar...
Palavras-chave: Orghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío Sorghum bicolor L. Moench; Combining ability; Heterosis; Hybrids; Cold tolerance.
Ano: 2012 URL: http://hdl.handle.net/10521/910
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Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío Colegio de Postgraduados
León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres variables; y (f) comparar...
Tipo: Tesis Palavras-chave: Sorghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío; Doctorado; Genética; Combining ability; Hybrids; Cold tolerance.
Ano: 2007 URL: http://hdl.handle.net/10521/1207
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Evaluation and identification of cold-tolerant rice genotypes by cold-water irrigation stress International Rice Research Institute
Jena, K. K.; Jeung, J. U.; Yea, J. D.; Choi, Y. H.; Hwang, H. G; Moon, H. P.; Virk, P. S.; Yanagihara, S.; Mackill, D..
p.54-56
Palavras-chave: Genotypes; Cold tolerance; Cold stress; Water temperature; Irrigation; Agronomic characteristics.
Ano: 2004 URL: http://hdl.handle.net/123456789/774
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Evaluation of germination, cold tolerance, and seedling vigor of boro rice germplasm International Rice Research Institute
Nilanjaya; Thakur, R.; Singh, J. R. P.; Singh, N. K..
p.19-20
Palavras-chave: Genotypes; Germination; Cold tolerance; Seedlings; Vigour; Germplasm; Boro rice.
Ano: 2003 URL: http://hdl.handle.net/123456789/1314
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Genetic parameters and performance of sugarcane families under cold stress in the South of Brazil PAB
Verissimo,Mario Alvaro Aloisio; Oliveira,Ricardo Augusto de; Silva,Sérgio Delmar dos Anjos e; Daros,Edelclaiton; Härter,Adílson.
Abstract: The objective of this work was to estimate the genetic parameters for the performance prediction of sugarcane (Saccharum spp.) families under natural cold stress, in Southern Brazil, and to identify the best combinations of parents aiming at the selection for tolerance to cold. Fifty-three full-sib families were evaluated in an incomplete block design, with five replicates per family, in the municipality of Pelotas, in the state of Rio Grande do Sul, Brazil. Harvest occurred in August 2013, nine months after planting and after cold spells with negative temperatures down to -2.2ºC. Statistical analyses, performed with the mixed model methodology, detected significant differences among families. Heritability estimates among progeny means were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum; Cold tolerance; Plant breeding; Selection.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000500583
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Genetics of seedling stage cold tolerance in rice (Oryza sativa L.) International Rice Research Institute
Bhandari, Hem S..
58 leaves. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Seedlings; Plant genetics; Cold tolerance.
Ano: 1994 URL: http://hdl.handle.net/123456789/711
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Inheritance of pinacle exsertion in rice Scientia Agricola
Cruz,Renata Pereira da; Milach,Sandra Cristina Kothe; Federizzi,Luiz Carlos.
Incomplete panicle exsertion is one of the symptoms of cold injury at the reproductive stage of the rice plant (Oryza sativa L.), which damages grain yield and raises disease incidence. For this reason, panicle exsertion is a better indicator of cold tolerance under field conditions than spikelet sterility, which may also be affected by other climatic factors. This work studies the variability of degree of panicle exsertion in rice, under the Southern Brazilian environmental conditions and determines the inheritance and heritability of this trait. Four rice genotypes of different cool temperature reactions at the reproductive stage were crossed and field evaluated, with the F2 generation, in relation to the degree of panicle exsertion and spikelet...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oryza sativa L.; Chilling temperature; Cold tolerance; Complete panicle exsertion; Heritability.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500009
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PSL05101-93-1-3-2 : ข้าวนาชลประทานสายพันธุ์ดีเด่น Thai Agricultural
Benjawan Phonkhod; Acharaporn Na Lampang Noenplab; Phamorn Pattawatang; Saang Chirinte; Sumalee Sangprem; Wilai Palawisut; Pornsuree kanjana; Jittichai Anawong; Wanakorn Intrarastit; Cawaporn Phumchoe; Duangorn Ariyapruek; Preamkamon Moonnilta; Sard Toktiwa; Chuanchom Deerusamee; Mungmat Wangka; Doungporn Vitoonjit; Chairat Chanoo; Doungkamon Boonbchuay; Jaturong Pipatpiriyanon; Wiphavadee Chamnan; Nayakorn Sanguakaen; Wantana Sriratanasak; Witchuda Rattanakarn; Rasamee Dhitikiattipong; Suradet Palawisut.
Irrigated paddy fields are the rice growing areas having high yield potential. Two significant factors enhancing high yield are the well-adapted variety and appropriate management. PSL05101-93-1-32 is a promising rice line derived from the 3-way cross of PSL00508-3-1-1-4/IR66738-118-1-2//IR67966-188-2-2-1 in 2005. It has as high yield potential as 965 kg/rai (6.03 t/ha). The average grain yield is 730 kg/rai, greater than PSL2, CNT1 and RD47 varieties by 14, 13 and 7%, respectively. The maturity is 115 days after sowing by transplanting method. Plant height is 83-90 cm. This promising line is a non-glutinous long grain rice having straw-color husk. The paddy rice seed dimension is 10.4×2.61×2.10 mm in width × length × thickness, respectively. The paddy...
Tipo: Collection Palavras-chave: Irrigated rice; High yield; Brown planthopper; Cold tolerance; Long grain class 1; นาชลประทาน; ผลผลิตสูง; เพลี้ยกระโดดสีน้ำตาล; ทนหนาว; ข้าวสารเมล็ดยาวชั้น 1.
Ano: 2014 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5895
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Report of a rice cold tolerance workshop. International Rice Research Institute
Rice Cold Tolerance Workshop (1st : 1978 : Suweon).; International Rice Research Institute.; Korea. Office of Rural Development..
139 p. : ill.
Tipo: Book Palavras-chave: Cold tolerance; Research.
Ano: 1979 URL: http://hdl.handle.net/123456789/656
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Selecao de familias de feijao adaptadas as condicoes de inverno do sul de Minas Gerais. Repositório Alice
NUNES, G.H. de S.; SANTOS, J.B. dos; RAMALHO, M.A.P.; ABREU, A. de F.B..
O objetivo do trabalho foi selecionar familias de feijao adaptadas as condicoes de inverno do sul de Minas Gerais. A partir das populacoes segregantes L3272 x (Carioca x TU) e L3272 x ESAL 601 foram selecionadas 230 familias que foram previamente avaliadas no cultivo de inverno no sul de Minas Gerais. Foram mantidas 103 familias, sendo 79 de ciclo normal e 24 precoces. Esses dois grupos de familias foram avaliados independentemente, em dois locais, no inverno de 1995. As familias selecionadas foram avaliadas em um unico experimento, no inverno de 1996. Em todos os experimentos foram avaliados os caracteres produtividade de graos, numero de dias para o florescimento, e reacao ao patogeno Erysiphe polygoni. Os resultados mostraram heterogeneidade entre as...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Phaseolus vulgaris; Cultivo de inverno; Tolerancia ao frio; Precocidade; Winter crop; Cold tolerance; Earliness.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/101081
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Supercooling point of western bean cutworm (Lepidoptera: Noctuidae) collected in Eastern Nebraska. Repositório Alice
HANSON, A. A.; MORAES, S. V. de P.; HUNT, T. E.; HUTCHISON, W. D..
Western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), is a pest of maize and dry beans that has recently undergone a northeastern range expansion in North America. In order to assess the cold tolerance of S. albicosta, we determined the supercooling point of lab and field collected late instar larvae and pre-pupae. Individuals were attached to fine contact thermocouples and cooled at 1°C per minute to detect heat released due to freezing of body fluids. Mean supercooling points decreased as larvae developed into later life stages. Pre-pupa collected in late fall had a mean supercooling point of -12.63°C. This research is the first documentation of cold tolerance measures for S. albicosta and will aid in designing future cold...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Striacosta albicosta; Western bean cutworm; Lagarta; Lagarta rosca; Resistencia a temperatura; Frio; Praga de planta; Feijão; Milho; Richia albicosta; Cutworms; Cold tolerance; Pests; Bean; Corn.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/974714
Registros recuperados: 22
Primeira ... 12 ... Última
 

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