Selective breeding method of new spring-sowing ecological type vegetable soybean variety

Abstract

The invention provides a selective breeding method of new spring-sowing ecological type vegetable soybean variety. The method comprises the steps of performing low-temperature resistant and weak-light resistant artificial selfing orientation systemic sieving on continuous 3-5 generations under the naturally low-temperature and weak-illumination cultivation conditions of a field for spring-sowing ecological type vegetable soybean variety with good early-maturing characters; performing sexual hybridization on sieved new vegetable soybean germplasms and vegetable soybean germplasms which are high in quality and yielding ability; performing artificial selfing orientation isolation and sieving on continuous 4-6 generations of the obtained new hybridized vegetable soybean germplasms under the naturally low-temperature and weak-illumination cultivation conditions of the field, and performing enhanced stress resistance sieving on the isolated and sieved target monophyly by the aid of an indoor artificial constant low-temperature weak-illumination identification technology so as to obtain a new early-maturing, high-quality, high-yield vegetable soybean variety with strong resistance to low temperature and weak light.

Description

technical field [0001] The invention belongs to the technical field of crop breeding, and in particular relates to a method for breeding new varieties of spring-sowed ecological type vegetable soybeans. Background technique [0002] Vegetable soybean (vegetable soybean), commonly known as edamame, is a special type of soybean variety that is harvested green for consumption when the pods and grains are emerald green at the end of the bulging period. Vegetable soybean is a traditional characteristic vegetable that residents in southern my country like to eat. Because of its rich nutrition and unique and delicious taste, it has developed into an important agricultural product for export and foreign exchange in recent years. The cultivation area is expanding year by year. The annual cultivation area in Shanghai alone reaches 10 The annual cultivation area in Zhejiang, Jiangsu, Anhui and Fujian provinces is more than 500,000 mu. It plays an important role in adjusting the structur...

AI Technical Summary

Problems solved by technology

[0004] For a long time, the vegetable soybeans used in spring planting in the south of the Yangtze River in my country have been dominated by conventional varieties. Unfavorable climate conditions, under the conditions of facility cultivation in early spring, after sowing of conventional vegetable soybean varieties, there are often phenomena such as no seedlings (severe rotten seeds) or slow emergence, poor growth and pod formation, resulting in low yield of fresh pods and reduced economic benefits

Secondly, due to the late growth period of conventional varieties, the product launch period is also delayed, which further affects the economic benefits of spring-sowed early-maturing facility-cultivated vegetable soybeans in this region, which has become a constraint on spring-sown early-maturing facility-cultivated vegetable soybeans in southern China. major limiting factor for development

Therefore, in view of the poor low-temperature and low-light tolerance and long growth period of the conventional spring-sown ecological vegetable soybean varieties in this area, innovative breeding of vegetable soybean varieties with strong low-temperature and low-light tolerance and early-maturing and high-quality traits suitable for early spring facility cultivation in the southern region The key to solving this problem is to use new soybean germplasm or new varieties

Images