Breeding method of rice three-line red rice sterile line Hongye A
A technology of red rice and rice, which is applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of insignificant heterosis, less grains per panicle, small grains, etc., and achieve excellent agronomic traits, Effect of grain length and rice quality
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Embodiment 1
[0020] Embodiment 1 Hongde A breeding process
[0021] (1) With Jin 23B as the female parent and Xiangwanxian 12 as the male parent, cross and then self-cross to the F7 generation, the characters are stable and formed, and the red indica rice is obtained;
[0022] (2) In the spring of 2005, red indica rice was used as the male parent and V41B was used as the female parent in Changde, Hunan, and the F1 generation was planted in Sanya, Hainan in the same year. In the spring of 2006, we planted 1,000 plants of the mixed-harvest F2 generation in Changde, and multi-type mixed harvests; in the autumn of 2006, we planted 500 plants of the F3 generation in a large group in Hainan, and selected compact plant type, good growth, long grain type, and brown rice. The red single plant was screened by different strains, and a total of 65 strains were selected; in the spring of 2007, the strains were sown in Changde, and the selection was good seed setting rate, compact plant type, strong til...
Embodiment 2
[0025] Embodiment 2 Red German A characteristic characteristic
[0026] (1) Fertility
[0027] In 2013, more than 1,000 breeding CMS lines Hongde A were collected for ear detection, and 40 ears were randomly selected for pollen dyeing test. The upper, middle and lower spikelets of each ear were mixed to make slices, and I-KI Stained with liquid, observed under a 10×10 magnification microscope, and counted two visual fields per sheet, no stained pollen was observed, and the abortion degree was 100%. The rate is 0, indicating that the sterile line has a high degree of sterility. In 2014, random sampling was carried out on the Hongde A population of the female parent of a small amount of seed production. A total of 40 panicles were sampled, with 120 spikelets and a sterility rate of 100%. At the same time, under better isolation conditions, a total of 93 ears of 10 plants were randomly sampled from the Hongde A population of 300 cuttings 26 days after the ear was full for seed ...
Embodiment 3
[0046] Example 3 Key Points of Breeding Techniques of Red German A
[0047] (1) Cultivate strong seedlings, insert basic seedlings, and build high-yielding groups
[0048] Choose a field with fertile soil and convenient drainage and irrigation as a seedling field. The seeding rate of the seedling field should be controlled within 12 kg / mu, and the female parent should be sown four days earlier. The seedling age should be controlled at 22-24 days, and the leaf age should be about 6 leaves. The parent-to-parent ratio is usually 2:8-10, double-planted, and the basic seedlings are inserted. Generally, the parents are inserted in 27,000 holes per mu. Apply enough basal fertilizer before sowing, apply tillering fertilizer 5-7 days after planting, tiller in shallow water, enough for seedlings to dry in the field, maintain a certain water layer during heading and flowering stage, and alternate dry and wet in the later stage to coordinate the water demand of the root system, prevent pr...
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