Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (6): 1307-1314.DOI: 10.3969/j.issn.1004-1524.2023.06.08

• Horticultural Science • Previous Articles     Next Articles

Diversity evaluation of agronomic traits and construction of core collection and taste quality evaluation system in vegetable soybean germplasm resources

BU Yuanpeng1(), LIU Na1, ZHANG Guwen1, FENG Zhijuan1, WANG Bin1, GONG Yaming1, XU Linying2,*()   

  1. 1. Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    2. Cixi Agricultural Technology Promotion Center, Cixi 315300, Zhejiang, China
  • Received:2022-10-31 Online:2023-06-25 Published:2023-07-04

Abstract:

The identification and evaluation of germplasm resources is the first step to make full use of elite genes to accelerate the improvement of varieties. In order to explore the genetic diversity of agronomic traits and build an evaluation system for taste quality, 379 vegetable soybean lines widely collected throughout the country were adopted and 25 agronomic traits were investigated in 2 years. The diversity of this whole collection was analyzed and evaluated based on phenotypic data. The results showed that the 25 agronomic traits of the panel contained abundant genetic variation. Except for three quality traits, the diversity index of 22 quantitative traits varied from 1.40 to 2.06. Among the 8 methods of core gemplasm clustering, the core gemplasm constructed by the longest distance method was the most representative, covering all the traits variations of the original gemplasm. Seven key physical and chemical indexes affecting the taste quality of vegetable soybean and six sensory latitudes were determined in this core collection. A multiple linear regression model for vegetable soybean quality was constructed. It was clear that soluble total sugar, oil and total free amino acid contents were three key physical and chemical indexes affecting the taste quality. The three dimensions of sweetness, waxiness and hardness could explain 68.2% of the overall preference change rate. The results of this study are expected to provide a reference for improving the evaluation and utilization efficiency of vegetable soybean germplasm resources and accelerating the cultivation of high-yield and high-quality vegetable soybean varieties.

Key words: vegetable soybean, germplasm resource, agronomic trait, taste quality, diversity evaluation

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