文献类型：期刊文献

中文题名：不同种源白栎果实形态特征和营养成分含量变异分析

英文题名：Variation in Morphological Characters and Nutrient Contents of Quercus fabri Fruits from Different Provenances

作者：熊仕发[1,2] 吴立文[1] 陈益存[1] 高暝[1] 周新华[3] 汪阳东[1]

第一作者：熊仕发

机构：[1]中国林业科学研究院亚热带林业研究所,浙江杭州311400;[2]南京林业大学,江苏南京210037;[3]中国林业科学研究院亚热带林业实验中心,江西分宜336600

年份：2020

卷号：33

期号：2

起止页码：93-102

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：中国林科院中央级公益性科研院所基本科研业务费专项资金项目"栎类资源培育与利用关键技术研究"(CAFYBB2018ZB001)。

语种：中文

中文关键词：白栎;种源;果实形态;营养成分;地理变异

外文关键词：Quercus fabri;provenance;fruit morphology;nutrient composition;geographic variation

分类号：S718.46

摘要：[目的]研究不同种源白栎果实形态特征和营养成分变异规律,为白栎品种选育和种质资源开发利用提供科学依据。[方法]收集白栎自然分布区14个天然种源368个单株果实,分别测定4个形态特征指标和6个营养成分含量指标,并进行统计学分析、主成分分析和聚类分析。[结果](1)白栎4个形态特征在种源间和种源内均差异极显著,6个营养成分含量在种源间均差异极显著。白栎果实形态特征的Shannon-Wiener指数(H)均值为1.839,其中,果实宽度(1.886)>果实长度(1.837)>长宽比(1.832)>百粒质量(1.801);(2)白栎果实10个特征参数间大多存在显著或极显著相关性,其与地理气候因子间仅个别存在显著相关性;(3)对10个特征参数进行Q型聚类分析,可将14个白栎种源划分为3大类群:湖北利川、四川邻水、四川阆中、贵州黄平、湖南新晃、江西宜黄和广西全州种源为第一类;重庆万州、重庆江津、湖南龙山、福建武夷山、浙江武义、浙江西湖种源为第二类;浙江遂昌种源单独归为一类。[结论]白栎果实形态特征在种源内和种源间均差异极显著,种源内的变异高于种源间的变异,营养成分含量在种源间均差异极显著,说明其存在着丰富的遗传变异;果实特征参数与地理气候因子间存在一定的相关性。综合聚类分析和营养成分含量分析结果,可以看出浙江遂昌种源果实综合品质最好。
[Objective] To provide references for breeding and germplasm resources development of Quercus fabri by analyzing the variations of fruit morphology and nutrient composition of Q. fabri from different provenances.[Method] The fruits of 368 individual plants from 14 Q. fabri provenances were collected, and 4 morphological characteristics and 6 nutrient content indicators of each fruit were measured, then, the statistical analysis, principal component analysis and cluster analysis were conducted. [Result](1) There were extremely significant differences in the 4 morphological characteristics of Q. fabri among and within these provenances, and there were significant differences in 6 nutrient contents among provenances. The mean value of Shannon-Wiener(H) of fruit morphology characteristics was 1.839, in which the values of fruit width, fruit length, length-width ratio and 100-grain mass were1.886, 1.837, 1.832, and 1.801.(2) The results of correlation analysis showed that most of the 10 characteristic parameters had significant or extremely significant correlations, however, only a few of them had significant correlations with geographical and climatic factors.(3) According to the results of Q-type cluster analysis of 10 characteristic parameters, the 14 Q. fabri provenances could be divided into 3 groups. [Conclusion] There are extremely significant differences in morphological characteristics of Q. fabri fruit within or among provenances, and the difference is greater within provenance than among provenances. There are extremely significant differences in nutrient content among provenances. It shows abundant genetic variations. There is a certain correlation between fruit characteristic parameters and geographic climate factors. Based on the results of cluster analysis and nutrient content analysis, it is proved that the fruit quality of the provenance from Suichang of Zhejiang Province is the best.