沙枣种质资源表型性状与果实品质多样性  

Diversity of Phenotypic Traits and Fruit Quality of Elaeagnus Germplasm Resources

作　　者：徐金[1] 于文章[1] 倪伟[1] 毛云飞[1] 刘青[1] 沈向[1] XU Jin YU Wenzhang NI Wei MAO Yunfei LIU Qing SHEN Xiang(College of Horticultural Science and Engineering,Shandong Agricultural University/State Key Laboratory for Crop Biology,Tai＇an,Shandong 271018)

机构地区：[1]山东农业大学园艺科学与工程学院作物生物学国家重点实验室,山东泰安271018

出　　处：《北方园艺》2016年第22期20-24,共5页Northern Horticulture

基　　金：国家科技支撑计划专项资助项目(2014BAD16B02);现代农业产业技术体系专项资助项目(CARS-28);公益性行业科技专项资助项目(20B03093);山东省现代农业产业技术体系创新团队资助项目(SDAIT-06-07)

摘　　要：以甘肃、内蒙古等地搜集的沙枣种质资源为试材,通过比较变异系数及遗传多样性指数,并采用聚类分析法对其性状进行分析,评价沙枣种质资源优劣,选育优势资源;分析沙枣种质的多样性,为今后选育高产优质的新品种、开发适合盐碱土栽培高经济附加值的果树资源提供理论依据。结果表明：5个质量性状以果面颜色的遗传多样性指数最高;枝有无刺遗传多样性指数最低;11个数量性状的遗传多样性指数变化范围在1.262 5~1.765 1,其中维生素C含量及单果质量遗传多样性指数较高,变异系数较大;民勤县泉山镇沙枣种质资源变异系数最大,民勤县重兴乡沙枣种质资源变异系数最小,遗传性状稳定;48份沙枣种质聚类后可分为四大类,第II类群具有较优质的外观,第III类群具有较高的营养价值。其中12、17号果实外观品质好,45、38号营养价值高,46、47、26号有较优的外观品质及营养价值。Elaeagnus germplasm resources from Gansu and Inner Mongolia were used as test materials, the variation coefficient and genetic diversity index were compared, their characteristics by cluster analysis were analyzed, the quality of Elaeagnus angustifolia was evaluated and breeding resources were selected. In order to provide theoretical basis for the selection of new varieties with high yield and good quality and for the development of fruit tree resources which had high econorn/c value and strong adaptability to saline alkali soil by analysis of diversity of elaeagnus germplasm. The results showed that among the five quality traits, the genetic diversity index of fruit surface color was the highest,the genetic diversity index of branches was the lowest. The genetic diversity index of 11 quantitative traits were between 1.262 5-1. 765 1 ,the content of vitamin C and fruit weight had the highest genetic diversity index and the maximum variation coefficient. The variation coefficient of Elaeagnus germplasm resources in Quanshan of Minqin county was the maximum. Chongxing of Minqin county with stable of genetic traits was minimum; the 48 materials were clustered into four groups, the II group had superior appearance, the Ⅲ group had higher nutrition. Number 12,17 had good appearance quality, number 45,38 had good nutritional value, number 46,47,26 had better appearance quality and nutritional value.

关 键 词：沙枣 种质资源 多样性 聚类分析 

分 类 号：S665.102[农业科学—果树学]