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Registros recuperados: 255
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A comparative field study of growth, survival and reproduction of Crassostrea gigas, C-angulata and their hybrids ArchiMer
Soletchnik, Patrick; Huvet, Arnaud; Le Moine, Olivier; Razet, Daniel; Geairon, Philippe; Faury, Nicole; Goulletquer, Philippe; Boudry, Pierre.
This paper reports a comparative study of two cupped oysters, Crassostrea gigas and C angulata, and their hybrids reared in the Marennes-Oleron Sound (France) under usual farming conditions. The relative proficiency of these species was characterized in terms of growth, survival and reproduction, three major concerns for oyster farming. Four populations of each taxon were sampled (C gigas: Japan and France; C angulata: Taiwan and Spain) and used as progenitors to produce six different progenies under common hatchery and nursery conditions (transfer of 5 to 6 g of seed oysters at sea and rearing in bags for 2 years). Mortality profiles differed greatly among the progenies. The C angulata progeny of Taiwanese origin gave the poorest results, with 100%...
Tipo: Text Palavras-chave: Atlantic coast; Crassostrea gigas; Phenotypes; Hybrids; Oyster fanning.
Ano: 2002 URL: http://archimer.ifremer.fr/doc/2002/publication-560.pdf
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A high yielding line resistant to sorghum midge, Stenodiplosis sorghicola Open Agri
Agrawal, B.L..
Palavras-chave: Sorghum; Variety trials; Genotypes; Grain; Animal developmental stages; Biological interaction; Resistance varieties; Breeds (animals); Yields; Hybrids.
Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3258
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A new source of cytoplasmic male sterility in rice and search for fertility restorers International Rice Research Institute
Duong Thanh Tai.
56 leaves : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Plant fertility; Rice; Hybrids; Cytoplasmic male sterility.
Ano: 1995 URL: http://hdl.handle.net/123456789/666
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A research and network strategy for sustainable sorghum and pearl millet production systems for Latin America Open Agri
B.V.S..
Palavras-chave: Sorghum; Soil ph; Millets; Genotypes; Tolerance; Grain; Leaf area; Cereals; Hybrids; Breeds (animals).
Ano: 2000 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4217
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A Review of Fertilizer Use Research on Sorghum in India Open Agri
H.L.S. ( compiler and editor ).
Palavras-chave: Sorghum; Genetic soil types; Fertilizers; Hybrids; Grain; Nitrogen; Genotypes; Inorganic acid salts; Soil analysis.
Ano: 1984 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4028
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Acceptance of hybrid seed in Thai agriculture Thai Agricultural
Prasert Boonmayam.
Palavras-chave: Corn; Maize; Hybrid seed; Hybrids; Production; Thailand; ข้าวโพด; เมล็ดพันธุ์ลูกผสม; การผลิตเมล็ดพันธุ์.
Ano: 1980 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4035
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Agronomic characteristics of different cytoplasmic male-sterility systems and their reaction to sorghum shoot fly, Atherigona soccata Open Agri
Dhillon, M.K.,( Mukesh K. Dhillon ).
Palavras-chave: Cytoplasm; Genotypes; Sorghum; Hybrids; Cereals; Performance; Systems; Mass media; Grain; Yields.
Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3228
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Agronomic evaluation of Paspalum notatum Flügge under the influence of photoperiod R. Bras. Zootec.
Machado,Juliana Medianeira; Dall'Agnol,Miguel; Motta,Eder Alexandre Minski da; Pereira,Emerson André; Simioni,Carine; Weiler,Roberto Luis; Zuñeda,Marcos Perera; Ferreira,Priscila Becker.
ABSTRACT The objective of this study was to evaluate the influence of photoperiod on the forage yield by ecotypes and intraspecific hybrids of P. notatum. Tetraploid ecotypes from the United States Department of Agriculture and the National University of the Northeast in Argentina, in addition to six intraspecific hybrids, totaling 19 ecotypes, were assessed. The materials evaluated were subjected to an extended photoperiod (14 h of light) and natural photoperiod from July 2011 to October 2012. The experimental design was a completely randomized factorial scheme of 19 × 2 (ecotypes × photoperiod) consisting of five replicates. The materials were influenced differentially by the variation in photoperiod, with one group showing high sensitivity, whereas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecotypes; Forage yield; Hybrids; Subtropical grass.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100008
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Agronomic traits and nutritional value of forage sorghum genotypes Animal Sciences
Lima, Luciana Oliva Barbosa; Pires, Daniel Ananias de Assis; Moura, Marielly Maria Almeida; Rodrigues, José Avelino Santos; Tolentino, Daniella Cangussú; Viana, Maria Celuta Machado.
This study aimed to evaluate the agronomic performance of 24 sorghum genotypes in four Brazilian regions and the chemical characteristics of genotypes grown in Sete Lagoas, state of Minas Gerais. Genotypes BRS655 and 12F37005 had higher average production of green matter (> 44 ton ha-1) and dry matter (> 17 ton ha-1), respectively. Genotypes 12F38019, 12F40019, 12F37005, 12F37043 and Volumax took more days to flower in three of the four municipalities (75-90 days). Genotypes 12F38006, 12F40006 and 12F37016 were taller (> 2 m). Values of dry matter, crude protein and neutral detergent fiber ranged from 37.15 to 50.13; 5.51 to 10.28 and 43.57 to 65.69%, respectively. The genotypes were not different regarding acid detergent fiber content, with mean...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ZOOTECNIA; NUTRIÇÃO E FORRAGICULTURA chemical composition; Hybrids; Productivity.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/32356
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Agronomic traits and seed yield produced in the soybean-corn crop in succession cropping - doi: 10.4025/actasciagron.v32i4.8064 Agronomy
Braccini, Alessandro de Lucca e; UEM, Maringá; Stülp, Marcibela; UEM; Albrecht, Leandro Paiola; UEM; Ávila, Marizangela Rizzatti; UEM; Scapim, Carlos Alberto; UEM; Ricci, Thiago Toshio; UEM.
Competition experiments were installed at the COODETEC unit in Palotina, Paraná State, with the objective of evaluating the influence of the cultivation of soybean in succession to a second crop season on different sowing dates on the agronomic traits and seed yield in both cultures. The experiment consisted of four field replicates, arranged in a completely randomized block design and carried out in two agricultural years (2003/2004 and 2004/2005). The individual blocks were comprised of three early-maturing soybean cultivars (CD 202, CD 215 and CD 216) sowed on five different dates (9/15, 9/30, 10/15, 10/30 and 11/15) and also three corn hybrids (CD 305, CD 306 and CD 308) that were sowed on different dates (1/30, 2/15, 3/1, 3/15 and 3/30). Data were...
Palavras-chave: Off-season corn sowing; Climate adverse conditions; Cultivars; Hybrids fitotecnia off-season corn sowing; Climate adverse conditions; Cultivars; Hybrids.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/8064
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Agronomical and molecular characterization of banana germplasm PAB
Mattos,Lorenna Alves; Amorim,Edson Perito; Amorim,Vanusia Batista de Oliveira; Cohen,Kelly de Oliveira; Ledo,Carlos Alberto da Silva; Silva,Sebastião de Oliveira e.
The objective of the present work was to characterize banana accessions from the Germplasm Bank at Embrapa Mandioca e Fruticultura Tropical (Brazil), using agronomical, physical and physicochemical characteristics of fruit and simple sequence repeats (SSR) markers. Twenty-six accessions were analyzed, in which high genetic variability was found, especially for the agronomical characters number of fruit and weight of bunch. Accessions with high contents of carotenoids (diploid 'Jaran'), polyphenols (triploid 'Caipira' and tetraploid 'Teparod') and vitamin C (diploid 'Tuugia' and an unknown triploid AAA) in the fruit were identified. Thirteen microsatellite primers revealed an average of 7.23 alleles, which showed high variability. A dendrogram was prepared...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Musa; Functional properties; Fruit quality; Hybrids; Yield.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000200005
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Alcohol dehydrogenase activities and ethanol tolerance in Anastrepha (Diptera, Tephritidae) fruit-fly species and their hybrids Genet. Mol. Biol.
Carvalho,Eneas; Solferini,Vera Nisaka; Matioli,Sergio Russo.
The ADH (alcohol dehydrogenase) system is one of the earliest known models of molecular evolution, and is still the most studied in Drosophila. Herein, we studied this model in the genus Anastrepha (Diptera, Tephritidae). Due to the remarkable advantages it presents, it is possible to cross species with different Adh genotypes and with different phenotype traits related to ethanol tolerance. The two species studied here each have a different number of Adh gene copies, whereby crosses generate polymorphisms in gene number and in composition of the genetic background. We measured certain traits related to ethanol metabolism and tolerance. ADH specific enzyme activity presented gene by environment interactions, and the larval protein content showed an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alcohol dehydrogenase; Anastrepha; Hybrids; Ethanol tolerance; Tephritidae.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000100027
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Alternative cytoplasmic male sterility systems in sorghum and their utilization Open Agri
A.A. ( A. Ashok Kumar ).
Palavras-chave: Cytoplasm; Genes; Sorghum; Hybrids; Heterosis; Transcription; DNA; Genetic structures; Segregation; Genomes.
Ano: 2008 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3149
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An economic evaluation of the returns to hybrid rice research in China International Rice Research Institute
Zhao, Longyue.
101 l. : ill. maps. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Rice; Hybrids; Research; Costs and returns; Economic analysis; China.
Ano: 1988 URL: http://hdl.handle.net/123456789/1178
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A.N. Kolmogorov's defence of Mendelism Genet. Mol. Biol.
Stark,Alan; Seneta,Eugene.
In 1939 N.I. Ermolaeva published the results of an experiment which repeated parts of Mendel's classical experiments. On the basis of her experiment she concluded that Mendel's principle that self-pollination of hybrid plants gave rise to segregation proportions 3:1 was false. The great probability theorist A.N. Kolmogorov reviewed Ermolaeva's data using a test, now referred to as Kolmogorov's, or Kolmogorov-Smirnov, test, which he had proposed in 1933. He found, contrary to Ermolaeva, that her results clearly confirmed Mendel's principle. This paper shows that there were methodological flaws in Kolmogorov's statistical analysis and presents a substantially adjusted approach, which confirms his conclusions. Some historical commentary on the Lysenko-era...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mendel's peas; Hybrids; Segregation ratio; Kolmogorov-Smirnov test; Chi-squared test.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000200002
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Anther culture of Vietnamese indica rices and their F1 hybrids International Rice Research Institute
Nguyen, Don Manh.
120 leaves. Thesis (M.S.) -- Central Luzon State University
Tipo: Thesis Palavras-chave: Rice; Anther culture; Hybrids; Varieties; Vietnam.
Ano: 1991 URL: http://hdl.handle.net/123456789/934
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Arachis hoehnei, the probable B genome donor of Arachis hypogaea based on crossability, cytogenetical and molecular studies Open Agri
Mallikarjuna, N..
Palavras-chave: Genomes; Hybrids; Polyploidy; Cytogenetics; DNA; Groundnuts; Mosses; Genetic polymorphism; Polymorphism; Genetic improvement.
Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3177
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Artificial Hybridization in Groundnut Open Agri
S.N..
Palavras-chave: Hybridization; Self pollination; Artificial hybridization; Groundnuts; Hybrids; Cross pollination; Planting; Crop management; Genes; Crossing over.
Ano: 1990 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4085
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Assessing joint research impacts Open Agri
M.C.S..
Palavras-chave: Pigeonpeas; Chickpeas; Millets; Sorghum; Hybrids; Germplasm; Genetic soil types; Enzymes; Groundnuts; Double cropping.
Ano: 1998 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4201
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Assessment of the effectiveness of maize seed assistance to vulnerable farm households in Zimbabwe AgEcon
Langyintuo, Augustine S.; Setimela, Peter S..
The publication describes outcomes of a study to assess the effectiveness of a large-scale crop seed relief effort in Zimbabwe during 2003-07. Aims of the effort, which was supported by the British Department for International Development (DfID) and coordinated by the Food and Agricultural Organization (FAO) regional office in Harare, included broader diffusion of open-pollinated maize varieties (OPVs), as opposed to hybrids. Based on the findings of the study, the authors recommend that, to increase benefits to vulnerable groups, participants in such efforts should effectively disseminate information on selecting and recycling seed, supported by training and field demonstrations, and should target relatively well-endowed farmers initially. Recommendations...
Tipo: Working or Discussion Paper Palavras-chave: Agricultural development; Technical aid; Farm income; Food production; Maize; Open pollination; Hybrids; Zimbabwe; Crop Production/Industries; International Development.
Ano: 2007 URL: http://purl.umn.edu/7655
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