Plant physiology and biochemistry

Screening and Evaluation of Salt Tolerance of 9 Water Spinach Germplasm at Germination Stage

  • 黄晓龙,欧成川,刘晓丽,黎秋芬,李真琴,李思彤,王俊宁
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  • (College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang 524088, Guangdong China)

Received date: 2023-01-12

  Accepted date: 2023-03-16

  Online published: 2023-05-15

Abstract

In this study, 9 water spinach (Ipomoea aquatica) germplasm resources were selected, and their seeds were treated with 0, 50, 100, 150, 200 mmol·L-1 NaCl. The germination rate, germination potential, germination index and vigor index were measured. The salt tolerance of water spinach germplasm resources was comprehensively evaluated by principal component analysis and cluster analysis. The results showed that low concentration salt treatment promoted the germination of some varieties, while high concentration salt treatment significantly inhibited the germination of 9 varieties. Principal component analysis divided 11 salt tolerance related indicators into 4 principal components, with a cumulative contribution rate of 89.509%. Combined with cluster analysis, the salt tolerance of 9 water spinach germplasm was divided into 4 types. ‘Sancha’ was a high salt-tolerant variety. ‘Taiguo’ and ‘Baijun’ belonged to medium salt-tolerant varieties; ‘Jieyang’, ‘Gangzhong’ and ‘Taiwang’ belonged to weak salt tolerant varieties. ‘Bailiu’, ‘Qinggeng’ and ‘Taimei’ were salt sensitive varieties.

Cite this article

黄晓龙,欧成川,刘晓丽,黎秋芬,李真琴,李思彤,王俊宁 . Screening and Evaluation of Salt Tolerance of 9 Water Spinach Germplasm at Germination Stage[J]. Subtropical Plant Science, 2023 , 52(2) : 108 -118 . DOI: 10.3969/j.issn.1009-7791.2023.02.004

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