爵士乐
发表于 2025-3-26 21:18:40
Hereditary Variance: Experimental Estimates,y genetic and environmental forces and to characterize genetic variation due to additive and non-additive effects. Maize is amenable to study by the different mating designs because of the ease in obtaining sufficient quantities of seed for testing by cross- and self-fertilization. Because maize is
破译密码
发表于 2025-3-27 02:57:50
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Modicum
发表于 2025-3-27 07:48:18
Selection: Experimental Results,ction and ear-to-row selection) were soon abandoned because of their supposed lack of efficiency in improving complex traits, such as grain yield. Some other methods and modifications of the previous ones have been used during the 20th century for improvement of populations, mainly after recurrent s
ordain
发表于 2025-3-27 10:10:54
Testers and Combining Ability,ological principles to the more practical plant improvement studies to achieve his goals (Hayes, 1956). The progeny test was defined by Allard (1960) as ‘a test of the value of a genotype based on the performance of its offspring produced in some definite system of mating.’ It was used as early as 1
有发明天才
发表于 2025-3-27 16:11:13
Inbreeding,nation. The plant has a separate male and female inflorescence (monoecious) which makes relatively easy to produce seed by artificial hybridization and self-pollination for inbreeding. The tassel (male inflorescence with staminate flowers) is at the top of the plant arising from the shoot apical mer
收集
发表于 2025-3-27 18:11:04
Heterosis,l production in crops in which heterosis expression is important. The commercial use of hybrids is restricted to those crops in which the amount of heterosis is sufficient to justify the extra cost required to produce hybrid seed.
暗指
发表于 2025-3-27 22:11:39
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牌带来
发表于 2025-3-28 02:35:54
Breeding Plans,ng cultivars. Recurrent selection methods can contribute to meeting the goals of continuous genetic improvement for significant genetic gains. These methods are complementary to inbred line development methods (e.g., pedigree selection, doubled -haploids) as they provide improved progenies cyclicall
虚假
发表于 2025-3-28 06:58:09
Testers and Combining Ability,ograms in the latter part of the 19th century. The progeny test in maize was first used in 1896 by Hopkins, starting the well-known program for half-sib recurrent selection of maize oil and protein content (e.g., the ear-to-row half-sib selection procedure).
微枝末节
发表于 2025-3-28 10:48:13
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