Ding Tonglou, Yang Zhen, Wei Xiaocen, Yuan Fang, Yin Shanshan, Wang Baoshan
Key Laboratory of Plant Stress Research, College of life Sciences, Shandong Normal University, Jinan, Shandong, 250014, PR China.
Shandong Provincial Key Laboratory of Microbial Engineering, School of Biologic Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250300, China.
Funct Plant Biol. 2018 Oct;45(10):1073-1081. doi: 10.1071/FP18009.
Soil salinity is one of the major abiotic stresses that reduces agricultural productivity and affects large terrestrial areas around the world. Germination is the starting point of the growth and development process of all crops, and it is severely affected by salt stress. Sweet sorghum (Sorghum bicolor (L.) Moench.) is one of the most promising crops that has a relatively high salt tolerance and biomass. However, few studies have evaluated the salt tolerance or screened the reliable evaluation traits of sweet sorghum. In this study, the membership function value of five traits was used as a comprehensive index for the evaluation and selection of salt tolerance in 300 sweet sorghum germplasms. After salt tolerance evaluation, 23 highly salt-tolerant, 38 salt-tolerant, 195 moderately salt-tolerant, 38 salt-sensitive and 6 highly salt-sensitive germplasms during the germination stage were screened. Moreover, the germination index under the 200mM NaCl treatment showed the highest correlation with salt tolerance during the germination stage. This information can be used for effectively evaluating sweet sorghum during the germination stage. These results are important for the evaluation of the salt tolerance of sweet sorghum germplasms during the germination stage.
土壤盐渍化是降低农业生产力并影响全球大片陆地地区的主要非生物胁迫之一。种子萌发是所有作物生长发育过程的起点，它受到盐胁迫的严重影响。甜高粱（Sorghum bicolor (L.) Moench.）是最具潜力的作物之一，具有较高的耐盐性和生物量。然而，很少有研究评估甜高粱的耐盐性或筛选其可靠的评估性状。在本研究中，将五个性状的隶属函数值作为综合指标，对300份甜高粱种质资源的耐盐性进行评估和筛选。经过耐盐性评价，筛选出了在萌发期23份高耐盐、38份耐盐、195份中度耐盐、38份盐敏感和6份高盐敏感的种质资源。此外，200mM NaCl处理下的发芽指数与萌发期耐盐性的相关性最高。这些信息可用于在萌发期有效评估甜高粱。这些结果对于评估甜高粱种质资源在萌发期的耐盐性具有重要意义。
