Keywords

Soybeans, Protein Content, Fat Content, Genetic Variation, Correlation

Abstract

Soybeans are the most important source of vegetable protein and oil for humans. Improving the protein and fat content of soybeans has always been an important research direction in soybean quality breeding. The NIR detection method was used to analyze the protein and fat content of 77 soybean microcore germplasms, and the genetic variation characteristics of the protein and fat content of the microcore germplasm and their correlation with the main agronomic traits were analyzed to provide guidance for germplasm utilization and quality breeding. Provide evidence. The results show that there are extremely significant differences in protein content and fat content among varieties and ecological intervals, and the variation is rich; the variation ranges of protein content and fat content are 40.68~50.03% and 13.81~21.51%, and the average contents are 45.95% and 17.42 %, the coefficient of variation is 4.42% and 7.96%; the protein content of varieties in different ecological zones is southern varieties > Huanghuaihai varieties > northern varieties > foreign varieties, and the fat content is opposite. The protein content is extremely significantly negatively correlated with the fat content (r=-0.825**), and is extremely significantly and significantly negatively correlated with the number of grains per plant and the number of pods per plant (r=-0.205**, r=-0.156*) , showed a highly significant positive correlation with the bottom pod height (r=0.240**). Principal component analysis showed that 4 principal components could explain 82.25% of the information, namely yield component factors, quality factors, plant type factors and grain weight factors.

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Original research done by Zhang Jinwei, Han Fenxia, Sun Junming, Han Guangzhen, Yu Shaoxuan, Yu Fukuan, Yan Shurong, Yang Hua

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