Breeding method of high-temperature-resistant cotton

Abstract

The invention discloses a breeding method of high-temperature-resistant cotton and provides a basis for breeding new materials and new varieties of high-temperature resistant cotton. According to themethod, firstly, a candidate parent material with high temperature resistance is screened out by training a basic material with high temperature resistance potential, and high-temperature training andsister hybridization are carried out on pollen of the candidate parent material; secondly, seeds obtained by sister hybridization are sowed in a high-temperature environment, the candidate parent material is screened out, a high-temperature potential parent material is established at the same time, and field pollen high-temperature training and screening of the high-temperature potential parent material under natural conditions are carried out; thirdly, material-to-material or plant-to-plant hybridization is conducted on the screened parent material with high-temperature resistance potentialin a high-temperature environment to obtain a specific high-temperature-resistant hybrid material, and further the specific high-temperature-resistant hybrid material is screened to obtain the high-temperature-resistant cotton parent material. The breeding target of the method is clear and definite, the pertinence is strong, the directional selection is clear and definite, meanwhile, the cost is reduced, and the time is saved.

Description

technical field [0001] The invention belongs to the field of crop breeding, in particular to a method for breeding high-temperature-resistant cotton. Background technique [0002] my country is the largest textile and clothing producer in the world. As the main textile material, raw cotton has a large demand and relatively insufficient self-sufficiency. Cotton is the only seed fiber crop. Among the bulk agricultural products such as grain, cotton, oil and sugar, only cotton is irreplaceable. Therefore, the production of cotton has particularly important strategic and social significance in my country's agriculture. [0003] Cotton production has always been in the summer of our country, and its flowering period is relatively long. Among them, June to August is the hottest season of the year, which is also an important period for the formation of cotton production. Studies have shown that when cotton enters the bud stage (the early stage of reproductive growth), the temperat...

AI Technical Summary

Problems solved by technology

Because this method needs to build a simple high-temperature greenhouse for artificial high-temperature stress treatment at the initial flowering stage of cotton, it is relatively time-consuming, the treatment is not easy to control, and is easily affected by environmental temperature changes and other conditions, and the pollen germination rate is only for identification, and the judgment standard is vague

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