西北林学院学报2024，Vol.39Issue(4)：24-29,38,7.DOI:10.3969/j.issn.1001-7461.2024.04.03
翅荚木太空种和普通种林木主要生长及叶片碳氮磷计量特征
Comparison of the Main Growth and Leaf Carbon,Nitrogen and Phosphorus Stoichiometry Characteristics of Space and Common Bred Species of Zenia insignis
摘要
Abstract
In order to investigate the mutagenesis mechanism of space breeding in forest trees,a comparative analysis of the relationship between forest growth and leaf traits was conducted to provide a reference for the preliminary understanding of the mutagenesis mechanism of forest breeding in space and the develop-ment of space breeding research of other tree species.Taking 6-year-old space bred and common bred seed-lings of Zenia insignis growing in Shunchang County of Nanping City,Fujian Province as the research ob-jects,the effects of two breeding methods on the seedling growth were analyzed by measuring the growth indexes such as plant height(H),diameter at breast height(DBH),wood volume(V)and leaf traits.The results showed that:1)the mean values of the growth indicators of the space and common bred seedlings were similar.However,in general,the growth indicators such as DBH and H of the space bred seedlings was slightly higher than those of the common bred seedlings,indicator V of the space bred seedlings was slightly lower than that of common bred ones.2)No significant differences were found between the two seedlings in specific leaf area,relative leaf water content and leaf C,N and P contents,while C/N was sig-nificantly different.Except for specific leaf area,C/N and C/P,all other major leaf traits(relative leaf wa-ter content and leaf C,N and P content)of the space bred seedling were higher than common bred seed-ling;the coefficients of variation of the major leaf traits were space bred seedling＞common bred seedling,except for leaf relative water content.3)The results of principal component analysis showed that different breeding methods had different strategies for resource acquiring.Compared to common bred seedling,the leaf area and leaf dry matter content of the space bred seedling were significantly and positively correlated with DBH.The results of the study indicate that compared to the common bred seedling,the space bred seedling of Z.insignis exhibits a certain degree of superior traits in terms of growth process,biomass accu-mulation,leaf phenotypic traits and nutrient content accumulation and utilization.The results provide a sci-entific basis for improving the selection and breeding of good species of Z.insignis and the enrichment of forest germplasm resources.关键词
太空种/普通种/生长性状/叶片性状/翅荚木Key words
space breed species/common species/growth trait/leaf trait/Zenia insignis分类
农业科技引用本文复制引用
林秋燕,钟全林,李静,郑跃芳..翅荚木太空种和普通种林木主要生长及叶片碳氮磷计量特征[J].西北林学院学报,2024,39(4):24-29,38,7.基金项目
国家自然科学基金项目(32371859,31971643) （32371859,31971643）
福建省科技厅高校产学合作重点项目(2023N5006) （2023N5006）
福建省林业局科技项目(2020TG21,2022FKJ24). （2020TG21,2022FKJ24）
