【摘要】 以5个广亲和品种为主,配制12个亚种间组合,研究 F₁、F₂、F₃世代再生力的遗传特点。结果表明,杂种一代再生力多偏向或超过高值亲本,为一显性性状,并具有不同程度的杂种优势。F₂再生力呈连续变异,至少有4对基因控制再生力的遗传,广义遗传力（h_B²）43.18%～79.73%,遗传进度（ΔG）0.110～0.625（q=5%）,相对遗传进度（ΔG′,q=5%）21.91%～56.21%。F₃估算的 h_N²为38.55%～57.35%,ΔG′为23.52%～51.27%.说明再生力有较好的选择效果。再生力特性与主作的株形和产量性状间无明显的相关关系。因此,培育再生力强,株形优良,产量高的亚种间组合或品种是可能的。更多还原

【Abstract】 The genetic behavior of ratooning ability was studied of 12 inter-subspecies crosses involving 5 wide compatible varieties.This character seemed to be dominant and control- led by at least 4 pairs of major genes.In the F₁,ratooning ability tended to be closer to the greater parent or surpassed it.In the F₂,this character showed continuous variation.Its heritability in broad sense h_B² ranged from 43.18% to 79.73%,its genetic advance △G from 0.110 to 0.625（q=5%）,and its relative genetic advance △ G’ from 21.91% to 56.21%（q=5%）.In the F₃,h_N² was estimated to be in the range of 38.55% to 57.35% while △G’ was from 23.52% to 51.37%.It is thus suggested that selection for ratooning ability in early generations would be effective.No significant relationship was found between ratooning ability and plant-type traits and yield characters of the main crop,indicating that this character is quite independent in inheritance.更多还原