摘要
为研究福建省主栽的山药品种的遗传多样性,以福建省33份山药地方资源为材料,对22个主要表型性状开展多样性分析、相关性分析和聚类分析。结果表明:福建省33份山药地方资源表型性状遗传多样性指数为0.684~1.766,8个表型数量性状的变异系数为9.76%~46.62%,块茎直径变异系数最大,达46.62%,福建省山药地方资源表型性状差异显著,遗传多样性较为丰富。相关性分析表明,相同山药基原间存在许多相同表型特征特性。通过对福建省33份山药资源表型特征向量及贡献率分析表明,前5个主成分(叶长、叶宽、主蔓长、茎粗、块茎长)累计贡献率为78.81%,主要反映地上部茎、叶、花和地下部块茎产量构成。通过对山药资源表型特征聚类分析,可将福建省33份山药资源分为4类,从遗传距离看,褐苞薯蓣与薯蓣亲缘关系最近,与山薯较远,与参薯距离最远。福建省山药地方品种遗传多样性丰富,地上部长势与块茎产量显著相关。
Genetic diversity on phenotypic traits of local Chinese yam germplasms in Fujian were evaluated for development and breeding of high-quality varieties.The 22 phenotypic traits on 33 Chinese yam varieties in Fujian were studied with diversity analysis,correlation analysis and cluster analysis.The results showed that the genetic diversity index of phenotypic traits of local yam resources ranged from 0.684 to 1.766.The phenotypic quantitative traits coefficient of variation ranged from 9.76%to 46.62%,and the coefficient of tuber diameter variation was the largest,reaching 46.62%.Obvious differences and relatively rich genetic diversity of phenotypic traits were found in local Chinese yam resources.Correlation analysis showed that there are many characteristics of the same phenotype between the same yam base.Principal component analysis showed that the cumulative contribution rate of the first 5 principal components was 78.81%,which mainly reflected the yield of stem,leaf,flower and tuber in the upper part of the ground.According to the cluster analysis of phenotypic characteristics of 33 local yam resources in Fujian,Dioscorea spp.was classified into 4 categories.In terms of genetic distance,D.persimilis was the closest relative to D.polystachya,and the furthest distance from D.alata.The diversity of the germplasm collection of Chinese yams in Fujian Province were abundant.There were correlations among the growth of aboveground plant parts and the traits related to the tuber yield which could be used for production estimation.
作者
陈阳
叶明辉
丛尧华
吴媛
林永胜
周先治
CHEN Yang;YE Minghui;CONG Yaohua;WU Yuan;LIN Yongsheng;ZHOU Xianzhi(Crop Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou 350003,Fujian,China;Technology Center,Xiamen Customs,Xiamen 361026,Fujian,China;Institute of Plant Protection,Fujian Academy of Agricultural Sciences,Fuzhou 350003,Fujian,China)
出处
《中国蔬菜》
北大核心
2024年第12期48-54,共7页
China Vegetables
基金
福建省科技计划项目—省属公益类科研院所基本科研专项(2022R1034002)。
关键词
福建省
山药
表型
遗传多样性
Fujian Province
Chinese yam
phenotype
genetic diversity
