十二份西瓜种质资源耐盐性鉴定  

Identification of Salt Tolerance of 12 Watermelon Germplasm Resources

作　　者：侯尹婕 黄欣 冯梦娇 岳贞 于蓉[3] 魏春华[1] HOU Yinjie;HUANG Xin;FENG Mengjiao;YUE Zhen;YU Rong;WEI Chunhua(College of Horticulture,Northwest A&F University,Yangling,Shaanxi 712100;Bayannaoer Modern Agriculture and Animal Husbandry Development Center,Bayannaoer,Inner Mongolia 015000;Institute of Horticulture,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan,Ningxia 750002)

机构地区：[1]西北农林科技大学园艺学院,陕西杨陵712100 [2]巴彦淖尔市现代农牧事业发展中心,内蒙古巴彦淖尔015000 [3]宁夏农林科学院园艺研究所,宁夏银川750002

出　　处：《北方园艺》2025年第7期1-8,共8页Northern Horticulture

基　　金：宁夏农林科学院高质量发展和生态保护科技创新示范资助项目(NGSB-2021-7);国家现代农业产业技术体系资助项目(CARS-25)。

摘　　要：以12个西瓜种质资源为试材,采用盆栽300 mmol·L^(-1)NaCl灌根进行胁迫处理的方法,研究盐胁迫9 d后对西瓜幼苗生理指标的影响,以期为筛选耐盐性较强的西瓜种质提供参考依据。结果表明:盐胁迫后西瓜幼苗的丙二醛含量(MDA)、脯氨酸含量(Pro)、超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)活性普遍增加;不同材料对盐胁迫的耐受能力存在差异,发生盐害的程度各不相同。通过盐害指数结合隶属函数法综合评价西瓜苗期的耐盐性,将12份西瓜种质划分为3类,3份高耐盐种质(‘W005’‘W046’和‘W004’),2份敏感种质(‘W015’和‘W023’)和7份中耐盐种质。Twelve watermelon germplasm resources were used as test materials,and the method of stress treatment by 300 mmol·L^(-1) NaCl potted irrigation was used to study the effects of salt stress on physiological indexes of watermelon seedlings after 9 days,in order to provide reference for screening watermelon germplasm with strong salt tolerance.The results showed that,malondialdehyde(MDA),proline(Pro),superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)activities of watermelon seedlings were generally increased after salt stress,and there were differences in salt tolerance and the degree of salt damage in different materials.The salt tolerance of watermelon at the seedling stage was comprehensively evaluated by the salt damage index combined with the subordinate function method,and the 12 watermelon germplasm were classified into three categories,three highly salt-tolerant germplasm(‘W005’‘W046’and‘W004’),two sensitive germplasm(‘W015’and‘W023’)and seven medium salt-tolerant germplasm.

关 键 词：西瓜 耐盐性 盐害指数 生理指标 隶属函数 

分 类 号：S651[农业科学—果树学]