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本文选用具有再生力的早籼品种:蜀丰一号-11,中籼品种:太国稻选,和没有再生力的早籼品种:矮南早,组配成蜀丰一号-11×太国稻选,矮南早×太国稻选,正正交F_1、F_2、B_1、B_2,反交F_1′、F_2′、B_1′、B_2′。试验结果:第一、在蜀丰一号-11×太国稻选组合内,观察到,在提高单株再生力方面,太国稻选的胞质具有明显的效应,即(F)_1′>(F)_1,(F)_2′>(F)_2,(B)_1′>(B)_1,(B)_2′>(B)_2;第二,观察到质、核互作的一些趋势,在矮南早×太国稻选正反交各世代呈(B)_2′>(F)_2′>(B)_1,(B)_2′>(F)_2′>(B)_1′,在蜀丰一号-11×太国稻选正反交各世代呈(B)_2>(F)_2<(B)_1,(B)_2>(F)_2′>(B)_1′说明在F_1(或F_1′)基础上增加太国稻选核成份均有提高再生力效应,而增加矮南早核成份,则有明显降低再生力效应,但增加蜀丰一号-11核成份,则增减再生力效应都不显著;第三、试算再生力特性遗传基因效应结果,蜀丰一号-11×太国稻选的加性、显性、加性×加性均呈极显著正效应,加性×显性则呈极显著负效应。矮南早×太国稻选的加性呈极显著效应。上述结果,为选育再生力强的新品种展示了极有希望的前景,也极有希望培育具有再生力强的杂交水稻。但正确选配亲本及适当组配方式,具有突出的意义。
In this paper, the regeneration of early indica varieties: Shufeng -11, medium indica varieties: too rice selection, and no renewable early Indica variety: short South early, group dubbed Shufeng -11 × too National Rice Selection, Dwarf Nanxiong × Taigu Rice Selection, F_1, F_2, B_1, B_2, and F_1 ’, F_2’, B_1 ’, B_2’. The results are as follows: First, in the Shufeng-1 × Taiguo rice combination, it was observed that the cytoplasm of Taiguoyao selection had obvious effect in improving plantlet regeneration, that is, (F) _1 ’ (F) _1, (F) _2 ’> (F) _2, (B) _1’> (B) _1, (B) _2 ’> (B) _2; Some trends showed that the positive and negative reciprocal crosses of Dwarf Nanyang × Taiguai were all (B) _2 ’> (F) _2’> (B) _1, (B) _2 ’> (F) _2’> (B) _2> (F) _2 <(B) _1, (B) _2> (F) _2 ’> (B) _1’ _1 ’indicated that the increase of F_1 (or F_1’) based on the selection of nuclear components of both rice have increased the regenerative effect, while the increase of short southern nucleus composition, then significantly reduce the regenerative effect, but increase Shifeng -11 Nuclear component, the effect of increasing and decreasing regeneration was insignificant. Thirdly, the genetic effect of regenerating power was calculated. The additive, dominant, additive × additive of Shufeng-11 × Taiguoyao Showed a very significant positive effect, additive × dominance showed a very significant negative effect. Short South early × Taiguo rice election additive was extremely significant effect. The above results have shown promising prospects for the breeding of new varieties with strong regenerative ability and are also highly promising for breeding hybrid rice with strong regenerative ability. However, it is of great significance that the correct matching of parents and proper grouping of methods should be adopted.