Breeding method for loose-flower-ball cauliflower with green stalks

Abstract

The invention discloses a breeding method for loose-flower-ball cauliflower with green stalks. The method comprises the following steps: (1) collecting different types of loose-flower-ball cauliflowerresources, performing selfing in a blooming period, and selecting a self-incompatible single plant with a self-compatible index of less than 2.0, loose flower balls, and dark green flower stalks; (2)continuing to select a single plant which meets a target character in the self-incompatible single plant, performing selfing for 5-6 generations through stripping buds, and selecting a stable self-incompatible line with a self-compatible index of less than 0.5 in a blooming period, and a self-compatible index of more than 10.0 in a bud stage; and (3) selecting two parents with complementary genetic characters from the stable self-incompatible line, performing pollination on flowers through reciprocal cross, selecting positive and negative hybridization combinations with cross-compatible indexes of more than 8.0 in a blooming period, and reserving seeds. According to the invention, the two parents are both double-harvest seeds prepared from self-incompatible lines, thus genetic complementarity is high, hybridization advantages are obvious, adaptability is strong, seeds produced by the two parents can be harvested and utilized, and different market demands can be met at the same time.

Description

technical field [0001] The invention relates to a method for breeding pine cauliflower, in particular to a method for breeding pine cauliflower with green stems, and belongs to the technical field of plant breeding. Background technique [0002] In recent years, cauliflower with loose curds (referred to as loose cauliflower, the same below) has won the favor of consumers for its tender green pedicel and crisp and sweet quality, and it is rapidly popular in domestic mass cities. , Songhua cauliflower has loose bulbs, long and green pedicels, and tastes sweet, crisp and tender. When frying and cooking, it is not easy to rot. After heating, the color of the flower stalks becomes greener and the appearance is good; when dehydrating, the edible flower stalks are mainly used, the stalks are long, and the color of the stalks is green. Through the analysis of the main nutritional quality of Songhuacai, the chlorophyll content is 12.8µg·g -1 (FW), carotenoid content 3.3μg g -1 (FW...

AI Technical Summary

Problems solved by technology

[0003] As a cruciferous crop, pine cauliflower belongs to cross-pollinated crops. It has obvious hybrid vigor, commerciality, disease resistance, adaptability and other aspects. The incompatible line (female parent) and an inbred line (male parent) are planted in proportion to harvest the seeds produced on the self-incompatible line, while the male parent is usually pulled out after pollination, which results in lower seed yield and land waste, increased cost

Images