A membrane covering and seed producing method of photo-thermo sensitive two-line hybrid wheat
A technology of hybrid wheat, light and temperature, applied in horticultural methods, botany equipment and methods, plant genetic improvement, etc., can solve difficult problems, sterile line fertility and fertility stability may not reach a more ideal level, Improve the cost of seed production and other issues to achieve the effect of improving the purity and yield of seed production, increasing the rate of outcrossing seed setting, and improving the purity and yield
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Embodiment 1
[0022] 1. Selection of breeding materials and seed production sites
[0023] CMS line BS20 (commercially available), winter sex, bred in Beijing. Recovery line 8622 (commercially available). The seed production base is selected in Fuyang, Anhui.
[0024] 2. Planting method and film covering method
[0025] Each panel adopts 1 male parent, 7 male sterile lines, 1 male male parent, 7 male sterile lines, 1 male male parent, with a row spacing of 13 cm in the covering film, and a row spacing of 45 cm between the male parent and the full width. 2.5-3 meters wide, 0.08mm thick, good transparency, aging resistance, and tear-resistant plastic film for 208 cm. Lay it flat on the wheat seedlings, and press the two sides of the film into the soil between the rows of wheat seedlings.
[0026] 3. Cover time
[0027] The cover film time is in the middle and late January.
[0028] 4. Time to remove the film
[0029] The time of uncovering the film is after the tip of the fourth leaf e...
Embodiment 2
[0035] 1. Selection of breeding materials and seed production sites
[0036] CMS line BS366, winter sex (commercially available), bred in Beijing. Restorer line E149 (commercially available). The seed production base was selected in Fuyang, Anhui.
[0037] 2. The planting method and film covering method, the time of covering film and removing film, and field management are the same as in Example 1.
[0038] 3. Seed production effect:
[0039] BS366's fertility, light and temperature sensitive period was advanced by 10 days, the comprehensive effect made the sterility rate reach more than 99%, the purity of hybrid seed production reached more than 97%, the yield of seed production increased by 15%, and the maturity period was advanced by 4 days.
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