芜菁种质资源抗旱性鉴定与筛选  

Identification and screening of turnip germplasm resources for drought resistance

作　　者：何苗 姜元昊 朱超凡 王亚海 吴忠祥 赵建勋 轩正英 HE Miao;JIANG Yuanhao;ZHU Chaofan;WANG Yahai;WU Zhongxiang;ZHAO Jianxun;XUAN Zhengying(Xinjiang Production&Construction Corps Key Laboratory of Protected Agricultur/College of Horticulture and Forestry,Tarim University,Aral 843300,Xinjiang,China)

机构地区：[1]南疆设施农业兵团重点实验室·塔里木大学园艺与林学学院,新疆阿拉尔843300

出　　处：《中国瓜菜》2024年第8期100-108,共9页China Cucurbits And Vegetables

基　　金：塔里木大学校长基金一般项目(TDZKYB201903);塔里木大学自然科学类创新研究团队项目(TDZKCX202407);塔里木大学研究生科研创新项目(TDGRI202332)。

摘　　要：为系统评价芜菁幼苗的抗旱性,筛选抗旱种质,以40份芜菁种质为试验材料,采用苗期盆栽试验,设置干旱和正常浇水两种处理,测定芜菁幼苗形态指标、叶绿素含量、旱害指数、死亡率等19个抗旱性评价指标,并利用相关性分析、主成分分析、隶属函数法等对芜菁幼苗进行抗旱性综合评价和抗旱鉴定指标筛选。结果表明,与正常浇水处理相比,干旱胁迫降低了芜菁的株高、茎粗、叶长和叶宽、地上鲜质量和干质量、叶绿素含量等指标,但对地下部相关指标的影响有正负两种结果。根据综合评价结果,可将40份芜菁种质划分为3种类型,包括11份干旱敏感种质、5份抗旱种质、24份中度抗旱种质,其中抗旱性强的芜菁材料是B9,对干旱最为敏感的材料是B2;主成分分析结果表明,株高、叶长、叶宽、叶柄长、主根长、根体积、地上鲜质量、地下鲜质量、地下干质量、根冠比、旱害指数可作为芜菁幼苗抗旱性评价的重要指标。In order to evaluate the drought resistance of turnip seedlings and screen the drought-resistant germplasm,40 turnip germplasm resources were used as experimental materials,and the seedling potting test was set up with two treatments of drought and normal watering to determine 19 drought-resistant evaluation indexes,such as morphological indexes,chlorophyll content,drought index,mortality rate,and so on,and the drought-resistant evaluation and drought resistance identification index screening were carried out on turnip seedlings using correlation analysis,principal component analysis,and the affiliation function method.The results showed that drought stress reduced plant height,stem thickness,leaf length and width,aboveground fresh mass and dry mass,chlorophyll content and other indexes of turnip,but had positive and negative effects on underground indexes.Fourty germplasm could be classified into 11 drought-sensitive varieties,5 drought-resistant varieties and 24 moderately drought-resistant varieties,among which the drought-resistant turnip material was B9,and the drought-most sensitive material was B2,leaf length,leaf width,petiole length,main root length,root volume,aboveground fresh mass,underground fresh mass,underground dry mass,root-crown ratio,and drought index were used as important indexes for the evaluation of drought resistance of turnip seedlings.

关 键 词：芜菁 苗期抗旱性 鉴定和筛选 

分 类 号：S631.3[农业科学—蔬菜学]