42个新疆海岛棉品种萌发期耐盐性评价  

Evaluation on Salt Tolerance of 42 Sea-Island Cotton(Gossypium barbadense)Varieties in Xinjiang during Germination Period

作　　者：赵康 杨涛[1] 王红刚 李生梅 庞博 马尚洁 高文伟[1] Zhao Kang;Yang Tao;Wang Honggang;Li Shengmei;Pang Bo;Ma Shangjie;Gao Wenwei(College of Agriculture,Xinjiang Agricultural University/Engineering Research Centre of Cotton,Ministry of Education,Urumqi 830052,Xinjiang,China)

机构地区：[1]新疆农业大学农学院/棉花教育部工程研究中心,新疆乌鲁木齐830052

出　　处：《作物杂志》2022年第5期27-33,共7页Crops

基　　金：国家自然科学基金(31771885);国家重点研发计划(2016YFJ01407);新疆维吾尔自治区优秀青年科技人才培养项目(2018Q16)。

摘　　要：为了解新疆海岛棉品种在萌发期的耐盐性差异,用150mmol/L的Na Cl对42个新疆海岛棉品种进行萌发期耐盐性评价和筛选。结果表明,在盐胁迫下,42个海岛棉品种发芽率、发芽势、发芽指数和鲜重均受到不同程度的抑制;各指标间存在极显著相关;通过主成分分析确定了2个主成分,主要反映萌发、干物质积累和含水量;主成分综合得分值和模糊隶属函数均值之间呈极显著正相关。通过二者的综合评价值,将42个海岛棉品种聚为4类,分别为高耐盐、中耐盐、弱耐盐和盐敏感类品种,为海岛棉品种的耐盐性评价和鉴定提供理论基础。To understand the salt-resistance difference of Xinjiang sea-island cotton germplasms in the germination period,42 sea-island cotton varieties in Xinjiang were evaluated and screened by using 150mmol/L NaCl.The results showed that under salt stress,the germination rate,germination vigor,germination index and fresh weight of 42 sea-island cotton varieties were inhibited to varying degrees.There were very significant correlations among the indicators.Two principal components were determined through principal component analysis,reflecting germination,dry matter accumulation and water content.There was a significant positive correlation between the principal component comprehensive score value and membership function mean value.Using the comprehensive evaluation values of the two,42 sea-island cotton varieties were grouped into four categories,namely high salt-tolerant varieties,medium salt-tolerant varieties,weakly salt-tolerant varieties and salt-sensitive varieties.This study provided a theoretical basis for the evaluation and identification of salt tolerance of sea-island cotton varieties.

关 键 词：海岛棉 耐盐性评价 主成分分析 隶属函数 

分 类 号：S562[农业科学—作物学]