摘要
【目的】研究梨育种材料果实性状品种间相似度和遗传多样性,比较评价15个新疆梨品种果实性状,为梨种质创新和杂交育种亲本选配提供参考。【方法】采用方差分析法和Q型聚类,对梨果实进行比较及分类,基于果实性状进行主成分分析。【结果】(1)新疆地方梨品种多样性丰富,各数量性状变异系数范围为8.83%~78.39%,果形指数变异系数最小,石细胞含量变异幅度最大,不同部位的不同级别分类上。(2)果点密度和果实硬度由大到小的顺序均为萼部>柄端>胴部趋势。(3)Q型聚类将15个品种分为四组,同一组内较其它组总体特征更为亲近,并未按地域趋势聚集。(4)主成分分析在特征值大于1时提取出4个主成分,累积方差贡献率达85.91%,前3名为霍城冬黄梨、伊犁句句梨、奎克阿木特。【结论】绿梨在聚类分析中自己聚为一类,果实外形及品质具有独特性,可溶性固形物含量较高,可用作特殊育种材料;黑酸梨和霍城冬黄梨可作为提高单果质量的选育亲本;库尔勒黄酸梨硬度大,可用于培育耐运输及贮藏;奎克阿木特汁液含量充足、可溶性固形物较高,可用于榨汁专用优质品种选育的亲本。霍城冬黄梨、伊犁句句梨、奎克阿木特果实性状好。
【Objective】In order to study the similarity and genetic diversity of fruit characters among pear breeding materials,15 Xinjiang pear varieties were compared and evaluated for their fruit characters,which provided reference for rational evaluation and utilization of Xinjiang Pear Germplasm resources.【Methods】Using the method of variance analysis and Q-cluster to compare and classify the pear fruit,and based on the characteristics of the fruit,principal component analysis was carried out.【Results】(1)The variety diversity of Xinjiang local pear was rich,the variation coefficient of each quantitative character ranged from 8.83%to 80.75%,the variation coefficient of fruit shape index was the smallest,and the variation range of stone cell content was the largest,which was mainly reflected in the different classification of different parts.(2)The order of fruit point density and fruit hardness was:calyx>stalk>carcass.(3)The 15 varieties were divided into four groups by Q-cluster,the same group was more close to the overall characteristics of other groups,and gathered according to the trend of the region.(4)Four principal components were extracted when the eigenvalue was more than 1,and the cumulative variance contribution rate was 85.91%.The top three of the evaluation results were Huocheng Donghuangli,Yili Jujuli and Kuike Amute.【Conclusion】In the cluster analysis,Lvli is clustered into one group,which has unique characteristics in fruit shape and quality,and has high content of soluble solids,so it can be used as a special breeding material;Heisuanli and Huocheng Donghuangli can be considered as breeding parents to improve the single fruit quality;Korla Huangsuanli has high hardness,which can be used for the research of transportation and storage tolerance;The juice content of Kuike Amute can be used as parents of high quality varieties for juicing.According to the comprehensive data analysis,Huocheng Donghuangli,Yili Jujuli and Kuike Amute have good fruit characters,which have important application va
作者
常文君
秦金铭
包建平
王亚铜
王绍鹏
樊国全
CHANG Wenjun;QIN Jinming;BAO Jianping;WANG Yatong;WANG Shaopeng;FAN Guoquan(Key Laboratory of Biological Resources Protection and Utilization in Tarim Basin of Xinjiang Production and Construction Corps,Alar Xinjiang 843300,China;School of Plant Science,Tarim University,Alar Xinjiang 843300,China;Luntai Fruit Tree Resource Garden of Xinjiang Academy of Agricultural Sciences, Luntai Xinjiang 841600,China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2022年第1期122-133,共12页
Xinjiang Agricultural Sciences
基金
新疆生产建设兵团塔里木盆地生物资源保护利用重点实验室开放课题(BRYB1903)
新疆生产建设兵团重大科技专项(2017DB006)
国家自然科学基金(31860528)。
关键词
梨
性状分析
聚类分析
主成分分析
pear
character analysis
cluster analysis
principal component analysis
