小麦K型胞质杂种F_2的育性及性状表现

Performance of Fertility and Main Characters in F_2 Hybrids with Ae. kotschyi Cytoplasm in Wheat

研究结果表明,K型杂种F_2中不育株出现的几率极低,其平均恢复度稍高于其F_1的恢复度,高恢复力的杂种F_2不会因为育性而影响其结实性,所研究的两个杂种F_2与相应的F_1在产量性状上差异不大,如果组合选配恰当,K型杂种F_2仍具有可利用价值。

The results showed that the ratio of sterile plants in F2 hybrids was very low, their average restoring degrees were slightly higher than that of the corresponding Fj hybrids, the rate of grain - bearing of F2 hybrids with high restoring ability was not influenced by their fertility, the differences between two F2 hybrids and their corresponding F|S in yield traits were very small, if good cross can be selected, the utilization of F2 hybrids with Ae. kotschyi will be possible.