Breeding method used for two-line sterile line of Southeast Asia hybrid rice
A hybrid rice, sterile line technology, applied in the fields of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of poor applicability, slow increase in export trade scale, and no technical advantages. The effect of wide range, full rice grain and high yield
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[0021] Example 1
[0022] 1) Select high-temperature-tolerant rice variety A, waterlogging-tolerant rice variety B, and high-blast-resistant rice variety C as parents to make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC And F 1BC Among them, the genotype of heat-tolerant rice variety A is aa, the genotype of waterlogging-tolerant rice variety B is bb, and the genotype of high blast resistant rice variety C is cc, F 1AC The genotypes are ac and F 1BC The genotype of rice is bc, the high-temperature-tolerant rice variety A is Wuyunjing 21, the waterlogging-tolerant rice variety B is Heiyou No. 1, and the high blast resistant rice variety C is Liaojing 92;
[0023] 2) Set F 1AC With F 1BC Cross, get the F1 generation of multiple crosses, record it as F 1ABC , The genotype is abcc;
[0024] 3) Plant F in diseased areas in the field 1ABC Seeds, the population is 2500, select the disease-free and disease-resistant plants, and harvest the corresponding seeds F 2...
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[0029] Example 2
[0030] 1) Select high-temperature-tolerant rice variety A, waterlogging-tolerant rice variety B, and high blast resistant rice variety C as the parents to make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC And F 1BC Among them, the genotype of heat-tolerant rice variety A is aa, the genotype of waterlogging-tolerant rice variety B is bb, and the genotype of high blast resistant rice variety C is cc, F 1AC The genotypes are ac and F 1BC The genotype of rice is bc, the high-temperature-tolerant rice variety A is Wuyunjing 21, the waterlogging-tolerant rice variety B is Heiyou No. 1, and the high blast resistant rice variety C is Liaojing 92;
[0031] 2) Set F 1AC With F 1BC Cross, get the F1 generation of multiple crosses, record it as F 1ABC , The genotype is abcc;
[0032] 3) Plant F in diseased areas in the field 1ABC Seeds, the population is 2800, select the disease-free, disease-resistant plants, and harvest the corresponding seeds F ...
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[0037] Example 3
[0038] 1) Select high-temperature-tolerant rice variety A, waterlogging-tolerant rice variety B, and high-blast-resistant rice variety C as parents to make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC And F 1BC Among them, the genotype of heat-tolerant rice variety A is aa, the genotype of waterlogging-tolerant rice variety B is bb, and the genotype of high blast resistant rice variety C is cc, F 1AC The genotypes are ac and F 1BC The genotype is bc, the high temperature-tolerant rice variety A is Wuyunjing 21, the waterlogging-tolerant rice variety B is Heiyou No. 1, and the high blast resistant rice variety C is Liaojing 92;
[0039] 2) Set F 1AC With F 1BC Cross, get the F1 generation of multiple crosses, record it as F 1ABC , The genotype is abcc;
[0040] 3) Plant F in diseased areas in the field 1ABC Seeds, the population is 3000, select the disease-free and resistant plants, and harvest the corresponding seeds F 2ABC , 50 copies...
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