Seed production method of hybrid wheat Chuanmai 59
A hybrid wheat and chemical technology, applied in the field of chemical destabilization to produce hybrids, can solve the problems of high material cost and long seed production time, and achieve the effects of low drug cost, reduced dosage, and convenient seed production
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Embodiment 1
[0018] Embodiment 1 parent source and characteristics
[0019] Male parent 01MP10: Sichuan Academy of Agricultural Sciences crop selection, pedigree: Jian 96 / 10090. Weak spring, the whole growth period is about 187 days, the coleoptiles are light green, the seedlings are semi-erect and vigorously growing, the leaves are medium in length and width; the tillering ability is medium, the ear formation rate is high, and the ears are light gray; the anthers are yellow and Large anthers, good exposure, and strong powder loosening ability. The plant height is about 90 cm, the plant type is scattered, the panicle layer is neat, and the yellowing and color change are good. The ear is rectangular, with long awns and white shell. The ear length is about 13cm. The spikelet density is medium. The number of spikelets is about 22, and the number of grains is about 48; the grains are white, oval, silty, plump, belly The groove is shallow, and the thousand-grain weight is about 42 grams. Res...
Embodiment 2
[0021] Example 2 Experiment on male killing effect of female parent of hybrid Chuanmai 59
[0022] For each parental material, there may be the best spraying time and the most economical spraying dose. The male parent material used in this experiment is the female parent 99FP2 of the hybrid wheat Chuanmai 59, and the male parent is the male parent 01MP10 of Chuanmai 59. The method is to catch powder manually.
[0023] Table 1 Experiment of male killing effect on female parent of Chuanmai 59
[0024]
[0025]
[0026] The Feekes values were 7.5 and 8.0, among the 6 doses tested, the sterility of the female parent 99FP2 increased with the increase of the dose, but the sterility of all the test doses did not reach the level of hybrid female sterility Seed production requirements with a degree greater than or equal to 95%. It shows that the detasseling period is early, and the tiller ears are not taken into account, and the tiller ears will self-fertilize, resulting in i...
Embodiment 3
[0030] Example 3 Row ratio test of hybrid Chuanmai 59 seed production
[0031] Table 2 Row comparison test of hybrid wheat Chuanmai 59
[0032]
[0033]
[0034] It can be seen from the results in Table 2 that in 2008, the effective panicle of the female parent was 250,000 / mu, and in 2009, the effective panicle of the female parent was 280,000 / mu. In the two-year experiment, when the row ratio of the parents increased from 2:6 to 2:12, the area of the female parent increased by 0.107 mu, and the effective panicle increased, but the seed production yield of the whole field did not increase due to the effective female parent. significantly increased with spike growth. Because the amount of seed used by the female parent increases with the increase of the row ratio of the parents, when the row ratio is greater than 2:6, the weight of the hybrid seeds produced by the female parent seeds per unit area (equivalent to the reproduction coefficient) is low. Experiments with a...
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