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基因型的潜在产量往往表现为单株的产量与群体的不同.众所周知,竞争力强的基因型在杂合群体中的产量比种植单一基因型的产量高,某些冬小麦基因型混种甚至比单种增产10%.因为有价值的基因型是从杂合群体中选得的,而成为品种后又要进行单种,这种竞争作用便使育种工作更加复杂化.选择优良基因型的效果在很大程度上与竞争力强的基因型单种时的表现有关.若表现高产,则选择较为有效,如果低产,则从杂交后代中选择的优良基因型不大可靠,因为育种者最容易选择竞争力强的基因型,而这些基因型在以后单种时产量比预期的要低.许多研究表明,高产或低产的基因型都可能具有很强的竞争力,但问题
Potential yields of genotypes tend to vary from one plant to another, and it is known that competitive genotypes produce more yield in heterozygous populations than in single genotypes, and some winter wheat genotypes are even more potent A single yield increase of 10%. Because the valuable genotypes are selected from heterozygous populations, and after becoming a species and then a single species, this competition will make breeding more complicated. The effect of selecting a good genotype To a large extent related to the performance of highly competitive genotypes, the selection is more efficient if the yield is high, and the good genotypes selected from among the hybrids are less reliable, if breeders are the easiest ones to choose from Competitive genotypes that later than expected lower yields for these genotypes Many studies show that both high and low genotypes can be very competitive, but the problem