Rapid identification method for soybean varieties with different phosphorus efficiency genotypes

Abstract

The embodiment of the invention discloses a rapid identification method for genotype soybean varieties with different phosphorus efficiency genotypes, and belongs to the technical field of soybean breeding. The method comprises the following steps: (1) after soybean seeds to be detected germinate into buds, respectively carrying out low-phosphorus treatment and normal-phosphorus treatment on eachvariety; (2) measuring the root surface area and the root diameter of the soybeans in the seedling stage under low-phosphorus treatment and the relative value of the phosphorus utilization efficiencyof the roots in the seedling stage of the soybeans; and (3) substituting into a regression equation, carrying out systematic clustering on a D value, and identifying the phosphorus high-efficiency genotype soybean variety, the phosphorus low-efficiency genotype soybean variety and the intermediate type soybean variety according to a clustering result. According to the method, the phosphorus efficiency of the genotype soybean varieties can be rapidly identified through three indexes in the seedling stage, the overall screening workload can be reduced, the working period can be shortened, and afoundation is laid for rapid screening of the genotype soybean varieties with different phosphorus efficiencies.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of soybean breeding, in particular to a rapid identification method for soybean varieties with different phosphorus efficiency genotypes. Background technique [0002] Soybean is a phosphorus-loving crop, and phosphorus is one of the important factors affecting the growth and yield of soybean. In my country, about 50% of cultivated land soil available phosphorus <10mgP / kg. According to research, 43% of the 1.37 billion hectares of cultivated land in the world are deficient in phosphorus, while 2 / 3 of the 107 million hectares of cultivated land in my country are deficient in phosphorus. Therefore, phosphorus deficiency is a common problem in the world and a major obstacle restricting agricultural production. factor. Phosphorus fertilizer application is currently the most common way to solve soil phosphorus deficiency, but excessive fertilization and inappropriate fertilization me...

AI Technical Summary

Problems solved by technology

[0006] For this reason, the embodiment of the present invention provides a rapid identification method for soybean varieties with different phosphorus efficiency genotypes, so as to solve the problems of heavy workload and long test period in the screening process of existing phosphorus-efficient soybean varieties with yield traits as identification indicators. Slow test progress and other issues

Images