Method for cultivating triple hybrid by radish male sterile lines and heterogeneous maintainer lines

Abstract

The invention discloses a method for cultivating a radish triple hybrid, comprising the following steps: cultivating F1 heterogeneous maintaining sterile lines; cultivating the triple hybrid by the cultivated heterogeneous maintaining sterile lines and paternal inbred lines. The method for cultivating the radish triple hybrid provided by the invention overcomes the disadvantages of male sterile lines. The cultivated triple hybrid integrates good characteristics of the three lines and has advantages of disease-resistance, anti-adversity, high yield and high quality. The method can also effectively protect parents from easy losing, increase yield of the parents and first-filial generation seeds and greatly decrease the production cost of the seeds.

Description

technical field [0001] The invention relates to the field of plant hybridization, in particular to a three-cross radish method. Background technique [0002] In today's world, there are generally two kinds of radish hybrid breeding methods. The first is the single-cross breeding method, using the self-incompatibility of radish to breed the self-incompatibility line of radish, and then crossing with the inbred line (male line) to cultivate the first generation of hybrids (such as figure 1 shown); the second is to use the natural male sterile situation of radish to breed the male sterile line of radish and its maintainer line, and then cross the male sterile line with the inbred line (male line) to cultivate the first generation of hybrids (such as figure 2 , 3 shown). The hybrids bred by the two are called "single crosses". The advantage of using self-incompatible lines for seed production is to keep the seed quality from degrading, and it is easier to obtain self-incomp...

AI Technical Summary

Problems solved by technology

The advantage of using self-incompatible lines for seed production is to keep the seed quality from degrading, and it is easier to obtain self-incompatible lines. The disadvantage is that it is difficult to reproduce and the cost is high. Parents are easily lost during seed production and cannot be effectively protected.

The advantage of using male sterile line for seed production is that it can effectively protect the parental resources, and the seed production procedures are simple. The disadvantage is that the parents are self-trading and degraded for many generations, the parents are difficult to reproduce, and the yield is low.

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