Results 31 to 40 of about 35,825 (283)

Fertile Tetraploids: New Resources for Future Rice Breeding?

Frontiers in Plant Science, 2020
Ploidy manipulation is an efficient technique for the development of novel phenotypes in plant breeding. However, in rice (Oryza sativa L.), severe seed sterility has been considered a barrier preventing cultivation of autotetraploids since the 1930s ...
Y. Koide, Daichi Kuniyoshi, Y. Kishima
semanticscholar   +1 more source

Avaliação de variedades e híbridos de bananeiras sob irrigação Evaluation of banana varieties and hybrids under irrigation

Revista Brasileira de Fruticultura, 2003
O Brasil dispõe de um grande número de variedades de bananeira, porém poucas atendem integralmente as exigências relativas à preferência dos consumidores, à produtividade e à resistência a doenças.
Sérgio Luiz Rodrigues Donato, Sebastião de Oliveira e Silva, Adriana Rodrigues Passos, Francisco Pinheiro Lima Neto, Marcelo Bezerra Lima   +4 more
doaj   +1 more source

Selective modes affect gene feature and function differentiation of tetraploid Brassica species in their evolution and domestication

Frontiers in Plant Science, 2023
The genus Brassica contains a diverse group of important vegetables and oilseed crops. Genome sequencing has been completed for the six species (B. rapa, B. oleracea, B. nigra, B. carinata, B. napus, and B. juncea) in U’s triangle model.
Dayong Wei, Nan Li, Nan Zhang, Feng Liu, Jie Wu, Sa Zhao, Jinjuan Shen, Zhimin Wang, Lisha Peng, Yonghong Fan, Jiaqin Mei, Qinglin Tang   +11 more
doaj   +1 more source

Physiological and Metabolic Changes in ‘Xinyu Mandarin’ Following Natural Tetraploidization

Agronomy, 2022
The mandarin is an important fruit crop worldwide, and ‘Xinyu mandarin’—a local Citrus reticulata variety—is widely cultivated in Jiangxi Province, in China. Autopolyploidy has frequently been used for the improvement of crop varieties.
Yuting Wang, Shuilin Wan, Yuqing Tang, Huidong Yang, Chao Xu, Xincheng Liu, Zhongdong Hu, Xinlong Hu   +7 more
doaj   +1 more source

The identity of Barbus capensis Smith, 1841 and the generic status of southern African tetraploid cyprinids (Teleostei, Cyprinidae)

European Journal of Taxonomy, 2018
The identity of Barbus capensis, as described by Andrew Smith (1841), is reviewed following a careful examination of the lectotype in the Natural History Museum, London.
Paul H. Skelton, Ernst R. Swartz, Emmanuel J. Vreven   +2 more
doaj   +1 more source

Morphological, cytogenetic and molecular characterization of new somaclonal variants in four caladium (Caladium × hortulanum) cultivars

Ornamental Plant Research, 2023
The discovery of triploids in caladium has raised strong interest in their use in cultivar development. For triploid production, tetraploids must first be generated from elite breeding material without the introduction of deleterious alleles like has ...
S. Brooks Parrish, Michael E. Kane, Zhanao Deng   +2 more
doaj   +1 more source

On the tetraploid origin of the maize genome [PDF]

Comparative and Functional Genomics, 2004
AbstractData from cytological and genetic mapping studies suggest that maize arose as a tetraploid. Two previous studies investigating the most likely mode of maize origin arrived at different conclusions. Gaut and Doebley proposed a segmental allotetraploid origin of the maize genome and estimated that the two maize progenitors diverged at 20.5 ...
Swigonova, Zuzana, Lai, Jinsheng, Ma, Jianxin, Ramakrishna, Wusirika, Llaca, Victor, Bennetzen, Jeffrey L., Messing, Joachim   +6 more
openaire   +2 more sources

Características agronômicas de genótipos de bananeira em três ciclos de produção em Rio Branco, AC Agronomic traits of banana genotypes in three cycles of production in Rio Branco, AC, Brazil

Pesquisa Agropecuária Brasileira, 2008
O objetivo deste trabalho foi avaliar características agronômicas de genótipos de bananeira, em três ciclos de produção. O experimento foi realizado em blocos ao acaso, com parcelas subdivididas e cinco repetições, em Rio Branco, AC.
Tadário Kamel de Oliveira, Lauro Saraiva Lessa, Sebastião de Oliveira e Silva, Janiffe Peres de Oliveira   +3 more
doaj   +1 more source

Características pós-colheita de frutos de genótipos de bananeira (Musa spp.) Post-harvest fruit characteristics of different banana (Musa spp.) genotypes

Revista Brasileira de Fruticultura, 2002
O conhecimento das características pós-colheita de novos híbridos de bananeira é uma importante informação que auxilia o melhorista em sua tomada de decisão.
Reginaldo Conceição Cerqueira, Sebastião de Oliveira Silva, Valdique Martins Medina   +2 more
doaj   +1 more source

TETRAPLOID FEMALES IN MORMONIELLA

Genetics, 1969
IN the wild-type hymenopteron, Mormoniella, it has been shown that five atelomitic chromosomes are characteristic of the male and that unlaid eggs have five bivalents, indicating that normal diploid females have ten chromosomes (WHITING 1968). In the polyploid stocks, the diploid males, identified by complementary allelism, have ten chromosomes ...
R M, Macy, P W, Whiting
openaire   +2 more sources