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普通小麦与粗山羊草杂交需借助幼胚培养方可获得杂种 ,取授粉 1 2～ 1 6d的幼胚进行拯救 ,成苗率较高 ,效果较好。而不同杂交方式对其杂种成胚率、成苗率及幼胚拯救率影响很大。以普通小麦为母本 ,粗山羊草为父本杂交时 ,1 5个杂交组合平均杂种成胚率、成苗率及幼胚拯救率分别为 5.35%、3.1 4%和 58.73% ;而在 1 2个反交组合中 ,其平均成胚率、成苗率及幼胚拯救率分别为 86.86%、1 7.1 0 %和 2 4 .44%。由此可见 ,普通小麦与粗山羊草杂交 ,反交组合的成胚率远高于正交组合 ,接近品种间杂交结实率 ;反交组合的成苗率亦高于正交 ;但幼苗拯救率正交高于反交。
Crossbreeding of common wheat and Aegilops calls requires hybridization of immature embryos to obtain hybrids. Pollinated 12 to 16 days of embryos are rescued, resulting in higher seedling rates and better results. However, different hybridization methods have a great influence on their hybrid embryo formation rate, seedling formation rate and immature embryo rescue rate. The average hybrid embryo formation rate, seedling formation rate and immature embryo rescue rate of 15 hybrids were 5.35%, 3.1 4% and 58.73% respectively when the common wheat was used as the female parent and the crude goat grass was the male parent. The average embryo formation rate, seedling formation rate and immature embryo rescue rate of the two reciprocal combinations were 86.86%, 7.110% and 24.44%, respectively. Thus, the embryo formation rate of reciprocal crosses between common wheat and Aegilops sinensis was much higher than that of orthorhombic combinations, approaching the seed setting rate of hybrids; the seedling emergence rate of reciprocal crosses was also higher than that of orthodox crosses; but the seedling rescue rate Orthogonal than the anti-cross.