A kind of breeding method of high-quality, disease-resistant and high-temperature-resistant two-line sterile line of rice
A technology of high temperature resistance and rice, applied in the field of crop genetics and breeding, can solve the problems of restricting the yield of hybrid rice seed production, seed germination rate and rice quality, affecting the safety of two-line rice seed production, and hidden dangers of food safety production, etc. Effects of improving rice blast resistance, improving seed production and quality, and improving appearance quality
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Embodiment 1
[0019] 1) C10 (represented by variety A), a long-grain type high rice rice rate variety, II-32B (represented by variety B) with high stigma resistance and easy seed production, and Guangkang 13B (represented by variety C) with high blast resistance ) as the parent, as the hybrid combination F A / F B , F A / F C , respectively with F AB , F AC express; plant F AB , F AC , and hybridize F AB / F AC ,, to obtain the first generation of recrossing, with F ABC express; plant F ABC and harvest F , 2 seed;
[0020] 2) Change the F , 2 The seeds were planted in the severely affected areas of rice blast in Shanghang tea land, Longyan, Fujian, and the induced variety International Rice 6 was used to induce the disease. The high blast resistance variety Guangkang 13B was used as the control, and the seedlings with the incidence level of leaf blast were selected from 0-1. Transplant and transplant rice seedlings; at the earing wax ripening stage, carry out the identification ...
Embodiment 2
[0031] 1) C10 (represented by variety A), a long-grain type high rice rice rate variety, Gufeng B (represented by variety B) with high stigma resistance, easy seed production and disease resistance, and Guangkang 13B (represented by variety B) with high blast resistance Variety C) is the parent and used as the cross combination F A / F B , F A / F C , respectively with F AB , F AC express; plant F AB , F AC , and hybridize F AB / F AC ,, to obtain the first generation of recrossing, with F ABC express; plant F ABC and harvest F , 2 seed;
[0032] 2) Change the F , 2 The seeds were planted in the severely affected areas of rice blast in Shanghang tea land, Longyan, Fujian, and the induced variety International Rice 6 was used to induce the disease. The high blast resistance variety Guangkang 13B was used as the control, and the seedlings with the incidence level of leaf blast were selected from 0-1. Transplant and transplant rice seedlings; at the earing wax ripenin...
Embodiment 3
[0043] 1) The long-grain high rice variety C10 (represented by variety A), the stigma resistant to high temperature and easy seed production maintainer line II-32B (represented by variety B), and the high blast resistance variety Gufeng B (represented by variety C represents) as the parent, as the hybrid combination F A / F B , F A / F C , respectively with F AB , F AC express; plant F AB , F AC , and hybridize F AB / F AC ,, to obtain the first generation of recrossing, with F ABC express; plant F ABC and harvest F , 2 seed;
[0044] 2) Change the F , 2 The seeds were planted in the severely affected area of rice blast in Shanghang tea land, Longyan, Fujian, and the induced variety "946" was used to induce the disease. The high blast resistance variety Gufeng B was used as the control, and the seedlings with leaf blast incidence level 0-1 were selected and transplanted. Seedling transplanting; at the earing wax maturity stage, carry out the identification of ear...
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