辣椒不同栽培种资源种子萌发期耐盐性差异及评价  

Salt Tolerance Difference and Evaluation of Different Capsicum Cultivars at Seed Germination Stage

作　　者：周帅 刁卫平[2] 潘宝贵[2] 郭广君[2] 戈伟[2] 刘金兵[2] 王述彬[1,2] ZHOU Shuai;DIAO Wei-ping;PAN Bao-gui;GUO Guang-jun;GE Wei;LIU Jin-bing;WANG Shu-bin(College of Horticulture,Nanjing Agricultural University,Nanjing 210095,China;Institute of Vegetable Crops,Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement,Nanjing 210014,China)

机构地区：[1]南京农业大学园艺学院,江苏南京210095 [2]江苏省农业科学院蔬菜研究所/江苏省高效园艺作物遗传改良重点实验室,江苏南京210014

出　　处：《江西农业学报》2020年第11期16-24,共9页Acta Agriculturae Jiangxi

基　　金：国家重点研发计划课题(2016YFD0100204);江苏省农业重大新品种创制项目(PZCZ201714);现代农业产业技术体系建设专项资金项目(CARS-23-G42)。

摘　　要：以4个栽培种的23份辣椒材料为研究对象,用不同浓度(0、30、60、90、120、150和180 mmol/L)的NaCl溶液进行种子萌发处理,以相对发芽势、相对发芽率、相对发芽指数和相对盐害率为评定标准,采用隶属函数法对辣椒种子萌发期的耐盐性进行了综合评价和分析。试验结果表明:随着NaCl溶液浓度的增加,23份辣椒材料的种子萌发均受到了不同程度的抑制,其相对发芽势、相对发芽率和相对发芽指数均有不同程度的下降,而相对盐害率则逐渐升高,而且在不同辣椒品种之间耐盐性存在显著差异;在4个耐盐指标之间均存在极显著(P<0.01)的相关性。对各材料4个耐盐指标的平均隶属函数值进行聚类分析,在欧氏距离0.10处将材料分为4类:极耐盐材料有3份,为PI339033、PI201224和2017D083;耐盐性强的材料有10份;中度耐盐材料有6份;敏盐材料有4份。Twenty-three germplasms from different Capsicum cultivars were treated with different salt concentrations(0,30,60,90,120,150 and 180 mmol/L)at seed germination stage.The relative germination potential,relative germination rate,relative germination index and relative rate of salt injury were used as evaluation indicators.The salt tolerance of different germplasms at seed germination stage was analyzed and evaluated by the subordinate function analysis.The results showed that the seed germination of 23 germplasms was restrained to varying degrees with the increase of NaCl concentration.The relative germination potential,relative germination rate and relative germination index all decreased to varying degrees,while the relative rate of salt injury gradually increased.The salt tolerance of 23 pepper germplasms showed significant differences.There was significant(P<0.01)correlation between the four indicators of salt tolerance.The 23 germplasms were classified into four levels of salt tolerance by the cluster analysis method based on the subordinate function values.There were PI339033,PI201224 and 2017D083 with extremely strong salt tolerance,10 materials with strong salt tolerance,6 materials with moderate salt tolerance and 4 salt sensitive materials.

关 键 词：辣椒 栽培种 种子萌发 盐胁迫 耐盐性 鉴定 

分 类 号：S641.3[农业科学—蔬菜学]