Comprehensive Evaluation of 65 Leafy Mustard Cultivars for Chilling Tolerance to Low Temperature Stress at the Seedling Stage
文献类型： 外文期刊
作者： Wang, Tao 1 ; Zhang, Shuangzhao 2 ; Huang, Yuyan 1 ; Ma, Huifei 3 ; Liao, Shuilan 1 ; Xue, Zhuzheng 3 ; Chen, Yongkuai 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Digital Agr, Fuzhou 350003, Peoples R China
2.Longyan Inst Agr Sci, Longyan 364000, Peoples R China
3.Fujian Acad Agr Sci, Crop Res Inst, Fuzhou 350003, Peoples R China
关键词： Brassica; chilling injury; antioxidant enzyme activity; chlorophyll fluorescence; comprehensive analysis
期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.5； 五年影响因子：2.7 ）
ISSN：
年卷期： 2024 年 14 卷 16 期
页码：
收录情况： SCI
摘要： Mustard is an important cash crop of the genus Brassica in the family Cruciferae. Low temperature is an important environmental factor limiting the growth of mustard. In this study, 65 leafy mustard cultivars were used as experimental materials, 25 degrees C was set as the control temperature, and 5 degrees C was set as chilling stress temperature to investigated the physiological response of chlorophyll (Chl) content, soluble sugar (SS) content, proline (Pro) content, antioxidant enzyme activity, malondialdehyde (MDA) content, and chlorophyll fluorescence to chilling injury. The chilling tolerance coefficients of each individual index were measured and correlation analysis, principal component analysis (PCA), the membership function method, and cluster analysis were applied to evaluate chilling tolerance. In a comprehensive analysis, the most chilling-tolerant cultivar was SJTKJ, the least chilling-tolerant cultivar was DX. Stepwise regression was used to establish a mathematical model for evaluating the chilling tolerance of mustard, and four chilling tolerance identification indices, including Fv/Fm, Phi PSII, POD activity, and Rfd were screened. This study provides a reference for the evaluation of the chilling tolerance of mustard and the breeding of new chilling-tolerant cultivars.
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