Thick-skin melon hybridization breeding method

Abstract

The invention discloses a thick-skin melon hybridization breeding method. The method comprises following steps: screening thick-skin melon selfing lines P1 and P2 whose offspring has hybrid vigor; utilizing a monoecious selfing line A to transform P1 or P2 into a monoecious selfing line P1A or P2A; taking the monoecious selfing line P1A or P2A as the female parent and P2 or P2 as the male parent,and carrying out hybridization to obtain hybrid thick-skin melon seeds. According to the method, before a unisexual flower parent is transferred, the hybrid vigor has been identified, various characters of target hybrid thick-skin melon species such as output, quality, resistance, and the like can be predicted; the whole breeding process is simple, convenient, and efficient, the target is definite, and no effort is wasted. Moreover, the method only needs unisexual flowers, no other demand on the characters of the monoecious selfing line A; great convenience is provided for the transferring ofthe unisexual flower parents; and P1A or P2A does not jeopardize the breeding of hybrid thick-skin melon species.

Description

technical field [0001] The invention belongs to the technical field of hybrid breeding, and in particular relates to a method for hybrid breeding of thick-skinned melons. Background technique [0002] To exploit heterosis for greater seed profits, melon breeders often sell hybrids as commercial seeds. However, the flower sex type of most of the melon varieties is andromoneous. When producing hybrids, artificial castration and pollination must be performed, which increases the cost of seed production. Reasons such as in time, cause female parent plant self-pollination, the seed that gathers on female parent plant often can be mixed with female parent inbred species, causes parental loss to cause loss to seed operator, and the purity of commercial hybrid is reduced, to give Seed (seedling) producer has brought many troubles, has also caused certain economic loss to seed (seedling) user. [0003] Compared with hermaphroditic flowers, unisexual flowers of melon are an ideal ma...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the cultivation method of the thick-skinned melon variety is that the cultivation time is too long: among them, when cultivating the female parent material, "Pearl 200" needs to be selfed for eight generations, and the hybrid offspring of PI414723 and "Pearl 200" may be selfed for eight generations; When breeding male parent materials, the hybrid offspring of "Elizabeth" and "Baishami" need to be selfed for ten generations; the breeding process is too cumbersome and the breeding cost is too high; and the predictability of the traits of the final target variety at the beginning of breeding is low, Breeding process is risky

Images