论文部分内容阅读
育种群体的选育和改良以及从遗传改良群体中有效地选育出自交系和杂交种,这两个各有特点的玉米育种阶段对系统遗传进展是必要的。交互全姊妹轮回选择是作为群体间改良法提出的,着重对加性和非加性遗传效应进行选择,并结合每轮选择的选系和杂交种进行群体改良(Hallauer 等,1970)。交互全姊妹轮回选择于1963年在研究2个丰产群体(BS10和 BS11)时产生的(Hallauer,1967a、
Breeding and improvement of breeding populations and inbred lines and hybrids are effectively bred from the population of genetic improvement. These two distinct stages of maize breeding are necessary for the genetic progress of the system. The intertemporal twinning option was proposed as an inter-group improvement approach, focusing on the selection of additive and non-additive genetic effects, combined with group selection and hybrid selection for each round of population improvement (Hallauer et al., 1970). The all-sister reincarnation was generated in 1963 when two high-yielding populations (BS10 and BS11) were studied (Hallauer, 1967a,