文献类型：期刊文献

中文题名：多地点4年生木荷生长性状家系变异与早期选择

英文题名：Variation and early selection for growth traits of 4-year-old Schima superba families in multiple sites

作者：杨梅洁[1,2] 季景勇[3] 张蕊[1] 沈斌[3] 姚甲宝[4] 徐永宏[5] 邱勇斌[6] 高凯[1] 周志春[1]

第一作者：杨梅洁

机构：[1]中国林业科学研究院亚热带林业研究所,全省林木育种技术重点实验室,浙江杭州311400;[2]河北农业大学,河北保定071000;[3]浙江省龙泉市林业科学研究院,浙江龙泉323726;[4]中国林业科学研究院亚热带林业实验中心,江西分宜336600;[5]浙江省建德市林业总场,浙江建德311600;[6]浙江省开化林场,浙江开化324300

年份：2025

卷号：49

期号：5

起止页码：154-164

中文期刊名：南京林业大学学报(自然科学版)

外文期刊名：Journal of Nanjing Forestry University:Natural Sciences Edition

收录：;北大核心:【北大核心2023】；

基金：浙江省农业(林木)新品种选育重大科技专项重点课题(2021C02070-9);福建省林木种苗科技攻关七期项目(ZMGG-0703);中央财政林业科技推广示范资金项目([2022]TS 09号)。

语种：中文

中文关键词：遗传变异;立地效应;遗传增益;家系选择;木荷

外文关键词：genetic variation;site effect;genetic gain;family selection;Schima superba

分类号：S792.99

摘要：【目的】揭示木荷(Schima superba)多地点家系变异及环境互作规律,为木荷良种选育提供参考。【方法】以2019年在浙江龙泉、建德、开化和江西分宜营建的木荷优树家系林为材料,调查树高、胸径、冠幅、枝下高、最大分枝粗等的遗传变异规律及立地效应,估算所试材料的现实增益及遗传增益等。【结果】多点4年生木荷优树的树高、胸径、冠幅、最大分枝粗、最大分枝角等具有极显著的地点、家系和家系×地点的互作效应,家系生长受到遗传和环境因素共同影响。不同种植地点家系生长性状差异较大,江西分宜点的胸径和分枝性状的变异系数相对较高,其次为浙江建德和浙江开化,最低为浙江龙泉点。木荷的树高与胸径呈显著中至强的正相关(0.660.90,P<0.001)。通过对木荷树高和胸径的BLUP-GGE分析,发现胸径的BLUP-GGE较为可靠,其中浙江建德点最具有区分力,浙江开化点最具有代表性。根据速生性和稳定性初步选出7个生长优良的家系,遗传增益(2.30%~12.12%,平均7.37%)和现实增益(3.48%~18.30%,平均11.12%)较高。【结论】木荷生长性状受家系以及种植点环境影响,以胸径进行遗传分析和品种筛选较为可靠,综合多地点木荷生长表现初步选出7个优良家系,分别来自福建建瓯和浙江龙泉产区。
【Objective】In order to treveal the genetic variation of Schima superba families in multiple sites and their interaction with the environment,we performed the forest survey,the tree growth and branching performance.The results would provide a theoretical basis for selecting S.superba varieties with strong adaptability,stability,and fast-growing among multiple sites.At the same time,these super varieties could be applied in multiple locations.【Method】A systematic investigation was conducted on the growth and branching traits of S.superba family forests built in Longquan,Jiande,Kaihua Cities(County)in Zhejiang Province,and Fenyi County in Jiangxi Province in 2019,including tree height(H),breast height diameter(DBH),crown width(C),maximum branch diameter(MBD),and maximum branch angle(MBA).Using a combination of GGE(genotype main effects and genotype-by-enviroment interactions)and BLUP(best linear unbiased prediction),this study revealed genetic differences among families of S.superba,evaluated the effects of environmental factors on growth and branching traits,explored the adaptability,stability,and rapid-growth among these families in multiple sites,and estimated the genetic and real-gains of these tested materials.【Result】The H,DBH,C,MBD and MBA of the 4-year-old S.superba families in Longquan,Jiande,Kaihua in Zhejiang Province and Fenyi in Jiangxi Province showed highly significant interactions among sites,families,and family×sites.The growth and branching traits of these families were influenced by both genetic and environmental factors.There were significant differences in growth traits among families from different sites.For example,the coefficient of variation in DBH and branching traits were relatively high among families in Fenyi,followed by Jiande and Kaihua,and relatively low in Longquan.There was a significant medium to strong positive correlation between H and DBH among families(0.660.90,P<0.001).The BLUP-GGE combined method was used to evaluate the H and DBH of S.superba,and the results showed that the BLUP-GGE model for DBH was more reliable.Among them,the families from the Jiande showed strong differentiation,followed by Longquan.While the families from Longquan had the most representativeness,followed by Kaihua and Jiande.Based on the fast-growing and stability results,we selected 7 excellent growth performing families,whose genetic gains ranged from 2.30%to 12.12%(average 7.37%),and the real-gains ranged from 3.48%to 18.30%(average 11.12%).These families demonstrated a high breeding potential and application value.【Conclusion】The growth and branching traits of 4-year-old multi-site S.superba families were influenced by the family and planting environment.It was more reliable to use DBH as a key indicator in genetic analysis and selection.Based on the genetic gain performance,we had selected 7 superior families with excellent growth and stable traits.