WEI Hai-bin,ZHU Chun-yun,LIU Xiao-li,et al.Research on the Phenotypic Diversity of Walnut Germplasm Resources in Qinghai[J].Northern Horticulture,2015,39(12):20-23.[doi:10.11937/bfyy.201512005]
青海核桃种质资源表型多样性研究
- Title:
- Research on the Phenotypic Diversity of Walnut Germplasm Resources in Qinghai
- 文章编号:
- 1001-0009(2015)12-0020-04
- Keywords:
- walnut; germplasm resources; phenotypic diversity; Qinghai province
- 分类号:
- S 664.102.4（244）
- 文献标志码:
- A
- 摘要:
- 以青海省6个核桃产区 152份样本为研究对象，通过对主要性状指标的变异分析、聚类分析和主成分分析，初步探讨青海核桃的表型多样性。结果表明：单果重、核壳厚、露仁情况、取仁难易、核仁饱满度等的变异系数相对较高，品种选育宜将这些指标作为主要参考指标；在6个核桃产区中，循化产区各性状的变异程度总体最大，遗传多样性最丰富，综合表现以尖扎产区的最好；聚类分析结果表明，当遗传距离为5时，青海的6个核桃产区可聚为3类。不同地理位置下，不同的气候与降水条件导致核桃表型变异程度不同、遗传多样性丰富度不同。
- Abstract:
- Phenotypic diversity of walnut germplasm resources were investigated from main characters through variation analysis，clustering analysis and principal component analysis based on 152 superior trees from 6 cities/counties in Qinghai.The results showed that，variation coefficients of many economic indicators，such as fruit weight，nuclear shell thickness，kernel situation，take the kernel were difficult，nucleolus plumpness was in a relative high level.Consequently，those could be considered as reference guides in walnut variety breeding.The variation extent of all walnut characters was the greatest in Xunhua area among all 6 walnut growing areas，where the genetic diversity showed great abundance.In general，the walnut from Jianzha area was ranked first in the 6 walnut areas；the result from cluster analysis showed that the 6 walnut areas could be clustered into 3 classes when the distance was 5.Different geographical location，climate and rainfall conditions leaded to walnut phenotypic variation degree different，richness of genetic diversity.
参考文献/References:
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备注/Memo
第一作者简介：魏海斌（1984-），男，青海西宁人，硕士，助理研究员，现主要从事经济林研究等研究工作。E-mail:13997091326@163.com.基金项目： 青海省自然科学基金资助项目（2013-Z-903）；青海省农业科技成果转化和推广计划资助项目（2012-N-509）；青海大学中青年科研基金资助项目（2012-QNY-5）。