不同产地降香黄檀种子和幼苗性状的变异研究

葛玉珍<sup>1</sup>; 梁惠凌<sup>1</sup>; 蒋国秀<sup>2</sup>; 韦宇静<sup>1</sup>; 黄仕训<sup>1*</sup>

引用本文:	葛玉珍, 梁惠凌, 蒋国秀, 韦宇静, 黄仕训.不同产地降香黄檀种子和幼苗性状的变异研究[J].广西植物,2020,40(4):567-575.[点击复制]
	GE Yuzhen, LIANG Huiling, JIANG Guoxiu, WEI Yujing, HUANG Shixun.Geographic variation of seed and seedling traits of Dalbergia odorifera from different places[J].Guihaia,2020,40(4):567-575.[点击复制]

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不同产地降香黄檀种子和幼苗性状的变异研究
葛玉珍¹, 梁惠凌¹, 蒋国秀², 韦宇静¹, 黄仕训^1*
1. 广西壮族自治区中国科学院广西植物研究所, 广西桂林 541006;2. 桂林市林业科学研究所, 广西桂林 541002

摘要:

为了探讨不同产地降香黄檀(Dalbergia odorifera)种子和幼苗的表型性状变异规律,该研究以来源于海南、福建、广西、广东等省/区10个产地降香黄檀的种子及在广西桂林培育的幼苗为材料,采用方差分析、相关性分析和主成分分析对其种子和幼苗生长的9个表型性状进行了比较研究。结果表明:降香黄檀种子和幼苗的表型性状存在较大变异,9个性状间均差异极显著,各性状平均变异系数(CV)为12.50%,变异系数范围在7.94%～18.89%,幼苗生长性状的变异高于种子性状的变异,说明种子性状的稳定性较高。相关分析表明各表型性状间及表型性状与地理-气候因子间均存在不同的相关性,各表型性状与经度、纬度及年降水量均无显著相关性,而海拔、年均温度与年降雨量是影响降香黄檀种子和幼苗性状的主要因子。利用主成分综合得分法,筛选出了3个在种子形态、幼苗生长和萌发情况等方面较好的家系,按综合得分排序分别为仙游产地、儋州产地、尖峰岭产地。研究结果可为降香黄檀优良种质资源的筛选提供科学依据。

关键词: 降香黄檀, 种子, 幼苗性状, 地理-气候因子, 相关性

DOI：10.11931/guihaia.gxzw201905013

分类号:Q944.3

文章编号:1000-3142(2020)04-0567-09

基金项目:广西科学研究与技术开发计划项目(桂科能1598025-45)[Supported by Guangxi Science Research and Technology Deve-lopment Program(1598025-45)]。

Geographic variation of seed and seedling traits of Dalbergia odorifera from different places

GE Yuzhen¹, LIANG Huiling¹, JIANG Guoxiu², WEI Yujing¹, HUANG Shixun^1*

1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China;2. Guilin Institute of Forestry Science, Guilin 541002, Guangxi, China 1. Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin 541006, Guangxi, China; 2. Guilin Institute of Forestry Science, Guilin 541002, Guangxi, China

Abstract:

To reveal variation rule of phenotypic traits of seed and seedling of Dalbergia odorifera from different places, nine phenotypic traits of seed and seedling growth were compared and analyzed through variance analysis, correlation analysis and principal component analysis, by taking seeds from ten locations of Hainan, Fujian, Guangxi and Guangdong and the seedlings cultivated in Guilin as experimental materials. The results were as follows: There was considerable variability in the phenotypic traits of D. odorifera seeds and seedlings, and the differences among the nine phenotypic traits were extremely significant. The average coefficient of variation(CV)of each trait was 12.50%, ranging from 7.94% to 18.89%. The variation of seedling growth traits was above that of seed traits, showing that the seed traits had higher stability. Relevant analysis showed that there were separate correlations among all phenotypic traits, between phenotypic traits and geographic-climatic factors. There was no significant correlation between phenotypic traits and longitude, latitude and annual precipitation. Altitude, annual average temperature and annual rainfall were the major factors affecting the traits of D.odorifera seeds and seedlings. Three families with better seed morphology, seedling growth and germination were screened out by principal component comprehensive score method on which the families were confirmed in growing areas of Xianyou, Danzhou and Jianfengling. The study provides a scientific information for the screening of D. odorifera germplasm resources.

Key words: Dalbergia odorifera, seed, seedling traits, geographical-climate factor, correlation