Breeding method of small seed type silvery pod cowpeas

Abstract

The invention belongs to the field of genetic breeding, and particularly relates to a breeding method of small seed type silvery pod cowpeas. The method comprises the steps that 'Zhijiang extra-early30' and Taijiang number 1' are adopted for artificial hybridization, later-generation selfing and orienteering system screening are performed, and the early-maturing small seed type selfing ZT-3-5-2-1-1-3 is obtained; 'silvery cowpea number 1' is adopted as a female parent, the selfing line ZT-3-5-2-1-1-1 is adopted as a male parent, after artificial hybridizing, the first selfing generation obtains the F2 selfing line YZT-5, YZT-5 seeds are subjected to chemical induction to obtain the selfing generation six, the high-generation selfing line YZT-5-E-3-8-6-1-2-6 is obtained, the selfing line is subjected to two-year-variety comparison test, and the selfing line is named as 'silvery cowpea 126'. Multi-parent hybridization is adopted, on the basis of the chemical induction method, the smallseed type silvery cowpea variety is selected, the 'silvery cowpea 126' is bred, the advantages of three parents of small seeds, early mature and silvery pods are integrated, the comprehensive characters are good, and the market application prospect is wide.

Description

technical field [0001] The invention belongs to the field of genetic breeding, and in particular relates to a breeding method of small-seeded silver-white pod cowpea. Background technique [0002] Cowpea, as one of the important vegetables in our country, is fed with its tender pods. Among them, the silver-white type of cowpea is popular among consumers for its crisp and tender quality and excellent taste, especially in Sichuan, Chongqing, Guizhou, Guangxi and other provinces. (Autonomous Region) The cultivation area is relatively large. The current silver-white pod cowpea variety has relatively large seed particles, with a thousand-grain weight of 160-190 g. Not only does the cost of using seeds in cultivation be high, but also the pods are easy to bulge, and the storage time in the garden is short. The existing cowpea variety breeding methods generally adopt conventional breeding methods, that is, using the existing cowpea variety resources as parents, crossing through ar...

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Problems solved by technology

[0003] The purpose of the present invention is to aim at the technical problem that the silver-white pod cowpea variety seed particle is bigger in the existing cowpea breeding technology, the cost of cultivation is high, the pods are easy to bulge, the storage time is short, and the parental selection range is narrow in the conventional breeding method, Provide a kind of breeding method of small-seed silver-white pod cowpea

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