大花序桉半同胞家系苗期测定及家系选择  

Seedling Stage Determination and Family Selection of Half-sib Families of Eucalyptus cloeziana

作　　者：曹昆彬 杨勇智[1] 郭洪英 吴玉丹 李佳蔓[1] 黄振[1] 陈炙[1] CAO Kunbin;YANG Yongzhi;GUO Hongying;WU Yudan;LI Jiaman;HUANG Zhen;CHEN Zhi(Ecological Restoration and Conservation on Forest and Wetland Key Laboratory of Sichuan Province,Sichuan Academy of Forestry,Chengdu 610081,China;Sichuan Academy of Grassland Sciences,Chengdu 611731,China)

机构地区：[1]四川省林业科学研究院,森林和湿地生态恢复与保育四川重点实验室,四川成都610081 [2]四川省草原科学研究院,四川成都611731

出　　处：《四川林业科技》2022年第5期66-72,共7页Journal of Sichuan Forestry Science and Technology

基　　金：大花序桉突破性新品种选育与配套技术研究(2021YFYZ0032-03);大花序桉种源、家系引种与基因库营建(2021CZZX16);速生珍贵用材树种大花序桉(澳洲大花梨)示范推广(2020SKJT04)。

摘　　要：以澳大利亚引种的47个大花序桉半同胞家系的苗期生长表现为研究对象,通过苗期测定筛选苗期生长性状表现好的家系。结果表明,大花序桉家系苗高和地径性状均达到了极显著差异,筛选了4个优良半同胞家系;苗高和地径的家系遗传力分别为0.97和0.95;苗高和地径呈极显著正相关;苗高和地径的遗传系数分别为28.61%和28.18%;引种家系间变异丰富,具有较大改良潜力。Taking the seedling growth performance of 47 half-sib families of Eucalyptus cloeziana introduced from Australia as the research object,the families with good seedling growth traits were screened by seedling stage determination.The results showed that there were significant differences in seedling height and ground diameter among Eucalyptus cloeziana families,and four excellent half-sib families were selected.The heritability of seedling height and ground diameter were 0.97 and 0.95,respectively.There was a very significant positive correlation between seedling height and ground diameter.The genetic coefficients of seedling height and ground diameter were 28.61%and 28.18%,respectively.There were abundant variations among introduced families,,which had great improvement potential.

关 键 词：大花序桉 半同胞家系 苗期测定 早期选择 

分 类 号：S792.39[农业科学—林木遗传育种]