柿种质资源果实形态多样性分析  

Analysis on Fruit Morphological Diversity of Persimmon Germplasm Resources

作　　者：张悦 索玉静[1] 孙鹏[1] 韩卫娟[1] 刁松锋[1] 李华威[1] 张嘉嘉 傅建敏[1] 李芳东[1] ZHANG Yue;SUO Yujing;SUN Peng;HAN Weijuan;DIAO Songfeng;LI Huawei;ZHANG Jiajia;FU Jianmin;LI Fangdong(Key Laboratory of Non-timber Forest Germplasm Enhancement&Utilization of State Forestry and Grassland Administration,Research Institute of Non-timber Forestry,Chinese Academy of Forestry,Zhengzhou 450003,China;Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]中国林业科学研究院经济林研究所,经济林种质创新与利用国家林业和草原局重点实验室,郑州450003 [2]南京林业大学,南京210037

出　　处：《园艺学报》2022年第7期1473-1490,共18页Acta Horticulturae Sinica

基　　金：国家重点研发计划项目(2019YFD1001200)。

摘　　要：以260份柿种质资源为试材,对果实的纵径、横径、侧径、果形指数、果柄长、果柄粗、蒂长、蒂宽和单果鲜质量等9个数量性状指标进行了遗传多样性、相关性、聚类及主成分分析等。供试材料的果实形态具有丰富的遗传多样性,9个数量性状的变异系数为16.98%(果形指数)~50.57%(单果鲜质量);累积贡献率为78.85%的前3个主成分包含了9个数量性状的大部分信息;基于第1和第3主成分进行聚类分析,可将供试材料划分为5个类群,其中Ⅰ、Ⅳ类群适合作为扁球形良种选育的育种材料,Ⅱ、Ⅲ类群适合作为球形良种选育的育种材料,Ⅴ类群适合作为长球果形良种选育的育种材料,Ⅳ类群适合作为大果良种选育的育种材料,Ⅱ类群果实鲜质量偏小,可以作为小果良种选育的育种材料。In order to evaluate fruit morphological diversity of persimmon(Diospyros kaki Thunb.),nine fruit quantitative traits,including longitudinal diameter,transverse diameter,lateral diameter,fruit shape index,stalk length,stalk diameter,pedicle length,pedicle width and fresh weight per fruit of 260persimmon germplasm resources were determined.Subsequently,genetic diversity,correlation,cluster and principal component analysis were conducted on these traits.The results demonstrated high genetic diversities of the morphological traits.Variation coefficients of the nine morphological traits ranged from 16.98%(fruit shape index)to 50.57%(fresh weight per fruit).Principal component analysis exhibited that the first three principal components with a cumulative contribution rate of 78.85%could represent all the nine morphological traits well.Based on the first and third principal components,the samples in this study were divided into five groups.GroupⅠandⅣwere suitable for breeding oblate spherical varieties;groupⅡandⅢwere suitable for breeding spherical varieties;groupⅤwas suitable for breeding long spherical varieties;groupⅣwas suitable for breeding large fruit varieties,and groupⅡwas suitable for breeding small fruit size varieties.

关 键 词：柿 种质 果实 表型 数量性状 

分 类 号：S665.2[农业科学—果树学]