Comparing the Salt Tolerance of Different Spring Soybean Varieties at the Germination Stage
文献类型: 外文期刊
作者: Zhou, Xinyu 1 ; Tian, Yumei 1 ; Qu, Zhipeng 1 ; Wang, Jinxing 2 ; Han, Dezhi 3 ; Dong, Shoukun 1 ;
作者机构: 1.Northeast Agr Univ, Agr Coll, Harbin 150030, Peoples R China
2.Heilongjiang Acad Agr Sci, Suihua Branch, Suihua 152052, Peoples R China
3.Heilongjiang Acad Agr Sci, Heihe Branch, Heihe 164399, Peoples R China
关键词: spring soybeans; salt stress; germination; evaluation
期刊名称:PLANTS-BASEL ( 影响因子:4.5; 五年影响因子:4.8 )
ISSN:
年卷期: 2023 年 12 卷 15 期
页码:
收录情况: SCI
摘要: Salinization is a global agricultural problem with many negative effects on crops, including delaying germination, inhibiting growth, and reducing crop yield and quality. This study compared the salt tolerance of 20 soybean varieties at the germination stage to identify soybean germplasm with a high salt tolerance. Germination tests were conducted in Petri dishes containing 0, 50, 100, 150, and 200 mmol L-1 NaCl. Each Petri dish contained 20 soybean seeds, and each treatment was repeated five times. The indicators of germination potential, germination rate, hypocotyl length, and radicle length were measured. The salt tolerance of 20 soybean varieties was graded, and the theoretical identification concentration was determined by cluster analysis, the membership function method, one-way analysis of variance, and quadratic equation analysis. The relative germination rate, relative germination potential, relative root length, and relative bud length of the 20 soybean germplasms decreased when the salt concentration was >50 mmol L-1, compared with that of the Ctrl. The half-lethal salt concentration of soybean was 164.50 mmol L-1, and the coefficient of variation was 18.90%. Twenty soybean varieties were divided into three salt tolerance levels following cluster analysis: Dongnong 254, Heike 123, Heike 58, Heihe 49, and Heike 68 were salt-tolerant varieties, and Xihai 2, Suinong 94, Kenfeng 16, and Heinong 84 were salt-sensitive varieties, respectively. This study identified suitable soybean varieties for planting in areas severely affected by salt and provided materials for screening and extracting parents or genes to breed salt-tolerant varieties in areas where direct planting is impossible. It assists crop breeding at the molecular level to cope with increasingly serious salt stress.
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