文献类型：期刊文献

中文题名：不同板栗品种坚果表型差异分析及稳定性指标筛选

英文题名：Phenotypic Difference Analysis and Screening Stability Indexes of Different Chinese Chestnut Varieties Nuts

作者：李彤彤[1] 郭素娟[1] 江锡兵[2]

第一作者：李彤彤

机构：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083;[2]中国林业科学研究院亚热带林业研究所,浙江杭州311400

年份：2023

卷号：36

期号：4

起止页码：99-108

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2020】；CSCD:【CSCD2023_2024】；

基金：国家重点研发计划项目“主要经济林优质高产新品种创制与精准栽培技术”(2022YFD2200400)资助;林业和草原科技成果国家级推广项目(2020133118)。

语种：中文

中文关键词：板栗;坚果表型;品种鉴别;稳定性;环境因子

外文关键词：Castanea mollissima Blume;nuts phenotype;variety identification;stability;environmental factors

分类号：S664.2

摘要：[目的]通过比较分析不同品种板栗表型性状,筛选出表型差异较大且不易受环境影响的指标,以期为生产实践中板栗品种鉴别及实现精准应用提供参考。[方法]以来自我国不同板栗产区的80个品种,共3200个坚果为试验材料,对其21个表型性状进行差异性、多样性分析;对表型与环境因子相关性进行分析,筛选出变异系数较小的稳定性指标;利用多地栽培的3个品种进行稳定性验证。[结果](1)不同地区板栗表型指标存在显著差异,湖北、江苏、安徽地区品种坚果、底座大小均显著高于其它地区。(2)21个表型指标变异范围为4.05%~42.28%,除去在群体内及群体间存在显著差异的指标,筛选出9个在品种间存在差异且变异系数较小的相对稳定指标,即果形指数、坚果圆度、底座圆度及相关比值指标。(3)相关性分析显示:坚果大小、底座大小相关指标与年平均温度、生长季平均温度、年降水量、生长季降水量均存在极显著正相关,与年日照时数、生长季日照时数均存在极显著负相关。(4)多地栽培的3个品种的9个坚果表型指标变异系数为1.13%~5.99%;方差分析结果显示,底座圆度在区域间差异显著,其余8个指标在区域间及个体间均差异不显著。[结论]不同板栗品种在21个坚果表型指标中具有丰富多样性及显著差异性,其中,果形指数、坚果圆度、底座长宽比、相对底座大小、底座弧长/坚果周长、底座面积/横切面积、底座长/横径、底座宽/厚度等8个坚果表型指标为稳定性指标,可应用于生产实践板栗品种鉴别。
[Objective]By comparing and analyzing the phenotypic traits of different varieties of chestnut,we screened out the indicators with large phenotypic differences and not easily affected by the environment for providing reference for the identification and accurate application of chestnut varieties in production practice.[Method]The differences and diversity of 21 phenotypic characters of 3200 nuts from 80 varieties in different Chinese chestnut producing areas were analyzed.The correlation between phenotype and environmental factors was analyzed,and the stability index with a small coefficient of variation was screened out.The stability of three varieties cultivated in multiple fields was verified.[Result](1)There were significant differences in the phenotypic indexes of chestnut in different regions and the nut size and hilum size of varieties in Hubei,Jiangsu and Anhui were significantly higher than those in other regions.(2)The variation of 21 phenotypic indexes ranged from 4.05%to 42.28%,and 9 relatively stable indicators with small variation coefficient were screened out,namely nut index,nut roundness,hilum roundness and correlation ratio index,excluding indicators of significant differences within and between groups.(3)Correlation analysis showed that the correlation indexes of nut size and hilum size were positively correlated with mean annual temperature,mean temperature in growing season,annual precipitation and precipitation in growing season,and negatively correlated with annual sunshine duration and growing season sunshine duration.(4)The variation coefficients of 9 phenotypic indexes of nuts from 3 cultivars from different regions ranged from 1.13%to 5.99%.The results of variance analysis showed that the other 8 indexes had no significant differences between regions and individuals except the hilum roundness.[Conclusion]Different chestnut varieties have rich diversity and significant differences in 21 nut phenotypic indexes,among which 8 nut phenotypic indexes,including nut index,nut roundness,hilum length-to-width ratio,relative hilum size,hilum arc length/nut perimeter,hilum area/transverse area,hilum length/transverse diameter and hilum width/thickness,are stability indexes.It can be applied to the identification of chestnut varieties in production practice.