黑杨树冠雌花分布与少絮无性系的选择

以美洲黑杨种内杂交得到的29个后代雌株为材料,对杨絮的空间分布、杨絮量、结实量、生长量等相关的10个数量性状进行调查分析,研究了杨絮的影响因素,并筛选杨树少絮优良无性系.结果表明：杨絮主要集中于树冠的集花区,花枝数、果序数、杨絮量及种子量在冠层中的分布均表现为中部＞上部＞下部.单株杨絮量与单株花枝数及平均冠幅呈极显著相关,与平均胸径、集花区长、单果序种子数、单株果序数、单株种子数呈显著相关;与树高及枝下高不相关.遗传变异分析表明：各性状在杂交子代中均达到极显著差异旦大都属于高水平重复力,且差异主要受遗传因素控制.从调查的8个相关性状中选出可代表杨絮量、集花区、单果序结实量等相关指标的3个主成分...

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Bibliographic Details
Published in林业科学研究 Vol. 27; no. 6; pp. 769 - 775
Main Author 吴立栓 胡建军 苏雪辉 李喜林 赵自成
Format Journal Article
LanguageChinese
Published 林木遗传育种国家重点实验室,国家林业局林木培育重点实验室,中国林业科学研究院林业研究所,北京100091%焦作市农林科学研究院,河南焦作,454000 2014
Subjects
主成分分析
相关分析
空间分布
美洲黑杨
遗传变异
correlation analysis
主成分分析
Populus deltoides
美洲黑杨
遗传变异
相关分析
genetic variation
空间分布
spatial distribution
principal component analysis
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ISSN1001-1498

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Summary:以美洲黑杨种内杂交得到的29个后代雌株为材料,对杨絮的空间分布、杨絮量、结实量、生长量等相关的10个数量性状进行调查分析,研究了杨絮的影响因素,并筛选杨树少絮优良无性系.结果表明：杨絮主要集中于树冠的集花区,花枝数、果序数、杨絮量及种子量在冠层中的分布均表现为中部＞上部＞下部.单株杨絮量与单株花枝数及平均冠幅呈极显著相关,与平均胸径、集花区长、单果序种子数、单株果序数、单株种子数呈显著相关;与树高及枝下高不相关.遗传变异分析表明：各性状在杂交子代中均达到极显著差异旦大都属于高水平重复力,且差异主要受遗传因素控制.从调查的8个相关性状中选出可代表杨絮量、集花区、单果序结实量等相关指标的3个主成分,代表了8个调查性状信息总量的75.487％.最后,依据主成分得分及相关性状综合评选出了92、121和260三个少絮无性系.
Bibliography:11-1221/S
To determine the factors influencing the spatial distribution of poplar catkins,and to screen poplar clones for fewer catkins,10 quantitative traits related to the quantity of poplar catkins,seed yields and growth increments were measured on 29 female plant clones in the F2 generation of an intraspecific cross of Populus deltoides.The results indicated that the poplar catkins were mainly distributed in tree crowns,with the amount of flowering branches,infructescences,poplar catkins and seed yields being the highest in the middle layer of the crown,the lowest in the lowest layer and intermediate in the highest layer of the crown.The quantity of poplar catkins produced by an individual plant was significantly positively correlated with the mean crown range,and the amount of flowering branchs of individual plant,additionally,was significantly positive correlation with the diameter at breast height （DBH）,the length of catkin concentration,the seed amount of each infructescence,the infructescence amount o
ISSN:1001-1498