The model, Yij = μ1 + β1Ij + δij, defines stability parameters that may be used to describe the performance of a variety over a series of environments. Yij is the variety mean of the ith variety at the j... hiện toàn bộ
W. R. Fehr, C. E. Caviness, Dwayne Thomas Burmood, J. S. Pennington
We developed stage of development descriptions which we believe apply to all soybean (Glycine max (L.) Merr.) genotypes grown in any environment. The descriptions apply to single plants or a community of plants and are precise and objective.Vegetative and reproductive development are described separately. Vegetative stages are determined by count...... hiện toàn bộ
Critical issues in the use of diallel analysis are reviewed. From a statistical point of view the critical issue concerns the choice of a model with fixed or random genotypic effects. From a genetical point of view, two assumptions are critical in attempts to interpret the resuits of diallel analyses. The assumption concerning the independent distribution of genees in the parents is most c...... hiện toàn bộ
Viswanathan Chinnusamy, André T. Jagendorf, Jian‐Kang Zhu
One‐fifth of irrigated agriculture is adversely affected by soil salinity. Hence, developing salt‐tolerant crops is essential for sustaining food production. Progress in breeding for salt‐tolerant crops has been hampered by the lack of understanding of the molecular basis of salt tolerance and lack of availability of genes that confer salt tolerance. Genetic evidence suggests that percepti...... hiện toàn bộ
A standardized, accurate, and easy system is needed to describe sunflower (Helianthus annuus L.) plant development. The objective of this study was to develop and describe stages of sunflower plant development in a manner which is simple but accurate.Plants were divided into either Vegetative (V) or Reproductive (R) stages of plant development. V...... hiện toàn bộ
Paul A. Counce, T. C. Keisling, Andrew J. Mitchell
The large area of rice (Oryza sativa L.) production worldwide is critical to the well being of large numbers of the world's people. Yet for rice, the most important single plant species for human nutrition, there is not a widely used growth staging system. Despite good points of the published rice growth staging systems, none has been used widely for describing r...... hiện toàn bộ
ABSTRACTThis paper addresses the question of whether there has been an increase in yield potential of maize (Zea mays L.) hybrids released in the north‐central United States since the advent of the “Green Revolution” that began in the late 1960s. Because there are few published data about hybrid growth rates and yield‐determining plant tr...... hiện toàn bộ
ABSTRACTYield potential is defined as the yield of a cultivar when grown in environments to which it is adapted, with nutrients and water non‐limiting and with pests, diseases, weeds, lodging, and other stresses effectively controlled. As such, it is distinguished from potential yield, which we define here as the maximum yield which could be reached by a crop in gi...... hiện toàn bộ
Shaobing Peng, Kenneth G. Cassman, S. S. Virmani, J. E. SHEEHY, G. S. Khush
ABSTRACTSince the release of IR8 in 1966, 42 additional indica rice (Oryza sativa L.) cultivars developed by the International Rice Research Institute (IRRI) for the irrigated and favorable rainfed lowlands have been released in the Philippines. The maximum yield of IR8 has been reduced by about 2 Mg ha−1 during the p...... hiện toàn bộ