唐古特白刺(Nitraria tangutorum)抗旱优良家系的生理特性  

Early Selection of Superior Families with High Drought-resistance in Nitraria tangutorum Based on the Physiological Indices

作　　者：柴文敏 李毅[1] 苏世平[1] 单立山[1] 种培芳[1] 

机构地区：[1]甘肃农业大学林学院,甘肃兰州730070

出　　处：《中国沙漠》2017年第6期1158-1170,共13页Journal of Desert Research

基　　金：中央财政农业科技成果转化资金项目(2014GB2G100134);国家自然科学基金项目(31460180;41361100;31560135;31360205;41461044);甘肃省教育厅成果转化项目(2017D-14)

摘　　要：唐古特白刺(Nitraria tangutorum)是蒺藜科(Zygophyllaceae)超旱生小灌木。为了筛选抗旱优良家系,分别在武威和兰州进行种源试验,初选两试验点生长健壮、无病虫害的31个3年生唐古特白刺家系,进行过氧化物酶(POD)、超氧化物歧化酶(SOD)、可溶性蛋白(SP)、可溶性糖(SS)、脯氨酸(Pro)及叶绿素(Chl)含量测定,运用主成分分析和隶属函数法进行抗旱性综合评价,筛选抗旱优良家系。结果表明:POD、SOD、SP、SS、Pro、Chl a、Chl b、Chl(a+b)含量及Chl a/b值在31个唐古特白刺家系间变化范围较大、差异性均显著,其中,Chl a含量变异最大,可溶性蛋白含量变异最小。从单个指标入选潜力来看,各试点每个指标下入选的优良家系相互交叉但不完全相同。采用多指标多试点的综合评价,筛选出5个抗旱性强的优良家系,分别是j3-9、w3-15、w3-12、jc-8、j3-8,其中民勤沙井子w3-12和w3-15号家系表现最好。In order to select superior family for drought resistance of Nitraria tangutorum ultra-xeromoph shrubs.Provenance experiment on 31 families of 3 years-old N.tangutorumthat strong growth,disease and pest resistance was carried out to investigate the contents of peroxidase（POD）,superoxide dismutase（SOD）,soluble protein（SP）,soluble sugar（SS）,proline（Pro）and chlorophyll（Chl）in Wuwei and Lanzhou city of Gansu province,principal component analysis and subordinate function method were both used in this study.Results indicated that peroxidase,superoxide dismutase,soluble protein,soluble sugar,proline and chlorophyll a,chlorophyll b,chlorophyll（a＋b）and chlorophyll a/b values of N.tangutorumfamilies varied in a large range among the 31 families,chlorophyll a content varied most,while the smallest was in soluble protein content.Superior families of N.tangutorum were selected by single index which was not identical.Adopting synthesis evaluation method selected the superior family for drought resistance,were j3-8,j3-6,jc-8,w3-12,j3-9 respectively,and Sha Jin zi w3-12 and w3-15 family in Minqin performed best in drought resistance.

关 键 词：唐古特白刺(Nitraria tangutorum) 早期选择 优良家系 主成分分析 隶属函数法 

分 类 号：Q945.79[生物学—植物学]