Carrot male sterility line breeding method

Abstract

The invention discloses a carrot male sterility line breeding method, which comprises the following steps of 1, using yellow carrot varieties for selfing seed reserving; 2, seeding seeds obtained in the first step; finding sterile plants; performing hybridization for finding maintainer plants; 3, performing transformation on the maintainer plants obtained in the second step so as to change the properties; selecting transformation maintainer lines; 4, breeding transformation maintainer lines until male sterile lines with red peels, red pulp and red core column are obtained through transformation. Through the intravarietal selfing and seed reserving of the conventional carrot (yellow carrots); male sterile lines are discovered after the planting; the variety is yellow carrot; the hybrid seeds are harvested through pollination. The later generations are still sterile plants; the plants with the pollen in identical varieties are retainer lines. The carrots of the sterile plants (lines) are yellow; through economic property transformation, 8 three-red (red peels, red pulp and red core column) sterile lines and 8 corresponding maintainer lines are bred.

Description

technical field [0001] The invention relates to a carrot breeding method, in particular to a carrot male sterile line breeding method. Background technique [0002] In agricultural production, taking advantage of the advantage of the first generation of hybridization has a significant effect on improving yield, quality, and disease resistance. Rice, corn, Chinese cabbage, tomato and other crops and vegetables have been widely used in production. [0003] When producing hybrid seeds, methods such as artificial emasculation, inbred line hybridization, self-incompatible line hybridization, and male sterile line hybridization are often used for breeding. Among them, the method of hybrid seed production using male sterile lines is simple, easy to implement, low in cost, good in effect and high in seed purity. However, artificial detasseling is required in the hybridization process, which not only increases the cost, but also the result is greatly affected by human factors, whic...

AI Technical Summary

Problems solved by technology

However, artificial emasculation is required in the hybridization process, which not only increases the cost, but also its results are greatly affected by human factors, affecting seed quality and yield

The process is labor-intensive and low-efficiency; at the same time, poor working conditions affect the physical and mental health of staff

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