Transfer method for male sterile line of purple wuta-tsai

Abstract

The invention discloses a transfer method for a male sterile line of purple wuta-tsai. In the traditional method, an Ogura sterile source has the defects that plants are yellowed when meeting a low temperature at a seedling stage, a floral organ nectary is degenerated and the like; in the method disclosed by the invention, a high-quality Ogura cytoplasm male sterile source purple non-heading Chinese cabbage male sterile line RC1 is utilized to be hybridized with a purple wuta-tsai stable selfing line PW1501; the PW1501 is used as a backcrossing male parent to continuously backcross and transfer for six generations; a wuta-tsai Ogura cytoplasm male sterile line RHP16 which is stable in sterility and has sterile plant rate and sterile degree being up to 100% is bred through economic character selecting and disease resistance and stress resistance identifying. According to the sterile line, the plants are not yellowed at the low temperature during the seedling stage, the nectary is developed, the sterility is stable, the combining ability is good, the comprehensive resistance is strong and the utilization value is relatively high.

Description

technical field [0001] The invention belongs to the technical field of cruciferous vegetable breeding, in particular, the invention belongs to the invention of a male sterile line transfer method of purple Utah cabbage. Background technique [0002] Wutaicai is a variety of the subspecies of Brassica Brassica in the family Brassicaceae. It originated in the middle and lower reaches of the Yangtze River in my country and has a cultivation history of nearly a thousand years. Wutaicai has wide adaptability and is currently cultivated in most parts of the country, and it is introduced and planted as a special dish in some places. Among them, it is more cultivated in the south, especially in Anhui, Shanghai, Jiangsu and other places where it is very common to eat and has a large cultivation area. Wutaicai has strong cold resistance and is especially suitable for sowing in autumn. It is supplied around the Spring Festival. It is famous for its sweet taste after frost and snow. It...

AI Technical Summary

Problems solved by technology

Afterwards, scholars at home and abroad have successfully bred broccoli, Chinese cabbage, cabbage, laver stalks and other low-temperature plants without yellowing and with better nectary development through technical improvements such as protoplast asymmetric fusion, hybridization, and multi-generation backcross breeding. male sterile line, but the male sterile line of purple Wutaicai has not been reported yet

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