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以5个广亲和品种为主,配制12个亚种间组合,研究 F_1、F_2、F_3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。F_2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_B~2)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%。F_3估算的 h_N~2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。
Five broad compatibility cultivars were used to make 12 subspecies combinations to study the genetic characteristics of F_1, F_2 and F_3 generations. The results showed that the reproductive vigor of the hybrid progeny was more or less than the high value of parents, as a dominant trait, and have different degrees of heterosis. There were at least 4 pairs of hereditary reproductive forces with at least 4 pairs of genes controlling genetic regeneration (hB ~ 2) 43.18% ~ 79.73%, genetic progress (ΔG) 0.110 ~ 0.625 (q = 5%), relative genetic progress (ΔG ’, q = 5%) from 21.91% to 56.21%. F_3 estimated h_N ~ 2 is 38.55% ~ 57.35%, ΔG ’is 23.52% ~ 51.27%, indicating that the regeneration of a better choice. There was no significant correlation between regenerative characteristics and plant type and yield traits. Therefore, it is possible to cultivate subspecies combinations or cultivars with strong regenerative ability, excellent plant shape and high yield.