Breeding method for male sterile line of edible oil sunflower

Abstract

The invention discloses a breeding method for a male sterile line of an edible oil sunflower. The method comprises the steps of finding out a male sterile line from a sunflower group to obtain a first generation of female parent plant bags; dividing the sunflower group with objective traits into multiple first generation of male parent groups, bagging and numbering, and pollinating pollen of the first generation of male parent groups into one male sterile plant in a hybrid manner; planting grains of the first generation of female parents to obtain a second generation of female parent groups, planting the grains of the first generation of male parents to obtain a second generation of male parent groups, bagging and numbering; selecting a group with the highest male sterile rate from the second generation of female parents, and dividing the second generation of plants of the previous generation of male parents in the group into multiple male parent groups, collecting the pollen from each group and then pollinating a single female parent plant, and so forth until the sterile rate is 80%, and carrying out one-to-one pollination on the male parents to achieve the breeding target. The breeding method has the beneficial effects that a maintainer line is large in search range, multiple in samples, high in success rate, short in period and suitable for interspecies maintaining, an excellent crossing parent of the sunflower can be provided through 5-6 generations of breeding, the yield and the quality of the sunflower are significantly improved and the market prospect is very considerable.

Description

technical field [0001] The invention relates to a sunflower breeding method, that is, a method for breeding male sterile lines of edible oil sunflowers, in particular to a method for breeding male sterile line parents with Xianghe Dabaibian edible oil sunflowers as the maintainer line. Background technique [0002] Edible oil sunflower refers to the sunflower whose seeds are both edible and oil-extracting, and is an important oil crop and economic crop. In order to improve the planting level of edible oil sunflower, it is necessary to do a good job in the selection and breeding of sunflower varieties, and find "one high and three resistance" varieties that are high-yield, resistant to diseases and insect pests, resistant to lodging and resistant to premature aging. At present, the selection and breeding of sunflower varieties include methods such as optimization and cross breeding. Wherein the preference is to select the seeds of plants with excellent characters as seeds th...

AI Technical Summary

Problems solved by technology

Obviously, using the current "1-to-1" method, it is difficult to find the maintenance system in "Xianghe Dabaibian". Therefore, it is necessary to find a new method with a short cycle, easy operation and high success rate

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