A kind of artificial hybrid seed production method of cotton without emasculation

Abstract

The invention relates to the field of seed breeding and in particular discloses an artificial cotton castration-free hybrid seed production method which is called as a castration-free syringe water injection method and comprises steps of water injection to kill males, male parent pollen collection and artificial pollination, wherein the step of water injection to kill males is implemented by injecting water into flower bud of female parents to achieve the purpose of killing males. Aiming at the situations that a relatively great amount of time is taken for artificial castration in the artificial hybrid seed production process and in addition, collision damage and stigma breakage can be easily caused in the operation process, the castration-free syringe water injection method provided by the invention is a novel technique for avoiding artificial castration and simplifying hybrid seed production; by adopting the method, a large cotton parent selection freedom degree is achieved, both long stigmas and short stigmas can be used, large-scale hybrid cotton combinations are available, the complexity of the seed production process can be effectively reduced, the working efficiency of operators is improved, and on the premise that the quality of hybrid seed production is ensured, the yield of hybrid seeds can be remarkably increased.

Description

technical field [0001] The invention relates to the field of breeding, in particular to artificial hybrid seed production without emasculation of cotton. Background technique [0002] Cotton, like other crops, has heterosis. To utilize heterosis in cotton, one is to select a high-dominant hybrid combination, and the other is to have a simple and fast method for mass production of hybrid cotton seeds. Making full use of this heterosis is a significant improvement. An effective approach to cotton yield (Wang Shengli et al., 2007). Cotton is an infinite flowering crop with an effective flowering period of forty to fifty days and large and scattered flower organs. According to these flowering habits of cotton, people have proposed different utilization methods of cotton heterosis, and commonly used methods include three-line method, two-line method, chemical detasseling, indicator trait utilization and artificial emasculation for cotton hybrid seed production (Xing Yihua and Ji...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention aims at the current situation that hybrid cotton seed production requires a lot of labor and high seed production cost, and adopts the "needle water injection method without emasculation", and establishes a set of cotton hybrid seed production procedures that can be simplified The new method is easy to operate, fast, labor-saving and time-saving, not only significantly reduces the cost of seed production, ensures the quality of hybrids, but also significantly increases the yield of hybrids

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