10个叶菜型甘薯品种茎尖性状的分析与评价  

Analyzing and Evaluating the Vine Tip Traits of 10 Leaf-Vegetable Sweetpotato Varieties

作　　者：李静 傅玉凡[1] 黄雨 王璐璐 李佳欣 冉海榕 LI Jing;FU Yufan;HUANG Yu;WANG Lulu;LI Jiaxin;RAN Hairong(School of Life Science,Southwest University/Chongqing Engineering and Technology Research Center for Sweetpotato,Chongqing 400715,China)

机构地区：[1]西南大学生命科学学院/重庆市甘薯工程技术研究中心,重庆400715

出　　处：《西南大学学报（自然科学版）》2022年第4期45-53,共9页Journal of Southwest University(Natural Science Edition)

基　　金：财政部农业农村部国家现代农业产业技术体系建设专项(CARS-10-C18);重庆市技术创新与应用发展专项(cstc2019jscx-gksbX0100).

摘　　要：在对10个叶菜型甘薯品种6个采收时期的基部分枝数和茎尖的20个性状进行加减符号标签法判别的基础上,再对这些性状的变异方差、Person相关、权重值、主成分及隶属函数进行了解析和品种综合评价.结果表明:茎尖产量与基部分枝数和茎尖质量之积显著正相关,基部分枝数的变异方差受采收期主导,茎尖质量的变异方差受品种主导.茎尖质量与叶柄的总质量、叶柄长度和叶柄在茎尖质量中的比例显著正相关,与茎在茎尖质量中的比例显著负相关.10个品种21个性状的加减符号法判别、隶属函数及主成分得分的高低排序较为一致,品种Y3和Y7属于“叶型叶菜品种”,Y8和Y10属于“柄型叶菜品种”,Y4和Y9属于“茎型叶菜品种”,Y1和Y6属于“分枝型叶菜品种”,Y2和Y5属于“交叉型叶菜品种”.叶柄是影响茎尖质量的重要器官.Based on the identification of the number of base branches and 20 traits of vine tip in 10 leaf-vegetable sweetpotato varieties in 6 topping periods by differentiating with addition or subtraction symbolic label method,the variance variation,Person correlation,membership function and principal component of those traits were analyzed and comprehensively evaluated.The results showed the vine tip yield significantly positively correlated with the product of vine tip weight and number of base branches.The variation of number of base branches were dominated by vine topping time,and the variation of per vine tip weight was dominated by variety.The per vine tip weight significantly positively correlated with total blades weight,total petioles weight,petiole length and ration of petiole weight to vine tip weight,and significantly negatively correlated with ration of stem weight to vine tip weight.The order of differentiating with addition or subtraction symbolic labeling,and scores of membership function with weighted value and principal component orders for 10 varieties were similar.Varieties Y3 and Y7 belonged to“foliage-type”of Leaf-vegetable sweetpotato,Y8 and Y10 belonged to“petiole-type”of leaf-vegetable sweetpotato,Y4 and Y9 belonged to“stem-type”,Y1 and Y6 belonged to“branches-type”,and other varieties belonged to“cross-type”.Petiole was the important organ,which influences the per vine tip weight.

关 键 词：叶菜型甘薯 茎尖 性状 叶柄 品种 

分 类 号：S531[农业科学—作物学]