Breeding method of yellow bud marker photosensitive male sterile line

Abstract

The invention discloses a breeding method of a yellow bud marker photosensitive male sterile line. The breeding method provided by the invention comprises the following step: performing autocopuation on the yellow bud marker photosensitive male sterile line under the condition of being within 11 hours and 12 hours and 20 minutes so as to get seeds of the yellow bud marker photosensitive male sterile line. The yellow bud marker photosensitive male sterile line is the sterile line, is also a maintainer line of the sterile line, and further has the characteristics of a wide range of restoration sources, free assembly, simple seed production procedure and low seed production cost. The yellow bud marker photosensitive male sterile line comprises a yellow bud marker, hybrid seeds can be effectively removed by screening markers during the seedling stage and photosensitive sterile strains can be further determined. The yellow bud marker photosensitive male sterile line can provide seed resources for breeding of the new photosensitive sterile lines, greatly reduce the cost of artificial emasculation, assemble a large number of hybrid combinations, breed the hybrid seeds and accelerate the breeding process.

Description

technical field [0001] The invention relates to a breeding method of a yellow-marked photosensitive male sterile line. Background technique [0002] Cotton has very obvious heterosis. Although cotton CMS has achieved "three-line matching", due to its narrow recovery source and the negative effect of sterile cytoplasm on the yield of hybrid F1 generation lint, the "three-line" hybrid cotton Breeding progress is relatively slow. At present, the utilization of heterosis in cotton mainly adopts artificial detasseling pollination method and "one-line dual-use" method of GMS line, but these two methods are cumbersome and the cost of seed production is too high, so it is difficult to realize the large-scale application of hybrids. [0003] In the invention patent "A Cotton Sterile Line Propagation and Its Supporting Seed Production Method" (Patent No. 94106074.8), the light-temperature-sensitive sterile cotton material with bud yellow mark needs to be 3-5 years before the flowerin...

AI Technical Summary

Problems solved by technology

At present, the utilization of heterosis in cotton mainly adopts artificial detasseling pollination method and "one-line dual-use" method of nuclear sterile line, but these two methods are cumbersome and the cost of seed production is too high, so it is difficult to realize the large-scale application of hybrids

[0003] In the invention patent "A Cotton Sterile Line Propagation and Its Supporting Seed Production Method" (Patent No. 94106074.8), the light-temperature-sensitive sterile cotton material with bud yellow mark needs to be 3-5 years before the flowering period of effective flowers. From one day to the end of the effective flowering period, control the soil temperature 5-15cm below the ground surface at 26.9-36°C to make the bolls form, so that the fertility of the material is controlled by the soil temperature below the ground, and the conditions for the reproduction of the sterile line It is very inconvenient to control

In the invention patent "Cotton GMS Line Yahuang A Light-temperature Interaction Propagation Method" (Patent No. 200510071011.X), the GMS line Yahuang A needs to be controlled at 29.5-30.5°C and 12-13 hours of light In the case of small hours, natural self-breeding is carried out, which makes the material breeding conditions narrow, and it is difficult to meet suitable breeding conditions in the field to obtain a large number of self-breeding

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