[1]叶金山,孟 伟,谢 青,等.兰考泡桐无性系自然接干性状的遗传变异研究[J].西北林学院学报,2008,23(06):83.
 YE Jinshan,MENG Wei,XIE Qing,et al.The Study on Genetic Variation of Natural Stemˉjoin Characters of Paulownia elongata Clones[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2008,23(06):83.
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兰考泡桐无性系自然接干性状的遗传变异研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第23卷
期数:
2008年06期
页码:
83
栏目:
林木遗传育种与栽培
出版日期:
2008-11-30

文章信息/Info

Title:
The Study on Genetic Variation of Natural Stemˉjoin Characters of Paulownia elongata Clones
作者:
叶金山 孟 伟 谢 青 胡伟华 杨文萍
国家林业局 泡桐研究开发中心 ,河南 郑州 450003
Author(s):
YE Jinˉshan MENG Wei XIE Qing HU Weiˉhua YANG Wenˉping
Paulownia Research and Development Center, State Forestry Administ ration, Zhengzhou, Henan 450003,China
关键词:
兰考泡桐无性系自然接干性状遗传变异
Keywords:
Paulownia elongata clone natural stemˉjoin character gene tic variation
文献标志码:
A
摘要:
利用田间试验和统计分析的方法研究了兰考泡桐无性系自然接干性状的遗传变异规律。 结果表明:(1)有8个自然接干性状(接干高、主干材积、接干材积、全干材积、接干材积/全干材积、 接干形数、通直度、丛枝病等级)属于高度变异型( CV ≥30);有10个自然接干性状(主干高、全干 高、胸径、主干基径、主干1/2径、主干端径、接干1/2径、主干材积/全干材积、接干形率、主干平均 削度)属于中度变异型(15≤ CV <30);有4个自然接干性状(树高、主干形数、主干形率、冠幅)属于 低度变异型( CV <15)。(2)接干高性状在影响和决定兰考泡桐无性系自然接干性状的总体表现上 起着重要作用。(3)改良兰考泡桐的自然接干类型是改良兰考泡桐通直度和削度性状的关键。(4) 一元方差分析表明,通直度性状存在显著性差异,而其余的自然接干性状都存在极显著差异。(5) 多元方差分析证明,无性系间自然接干性状存在极显著差异。
Abstract:
The genetic variation of natural trunk extension of Paulowni a elongata clones was studied by means of field test and statistical analysis. The results showed t hat: (1)eight natural trunk extension charˉ actersˉheight,main stem volume, trunk volume, wholeˉstem volume, t runk volume/wholeˉstem volume, form factor of trunk, straightness of stem and witches’ broom grad e belonged to the grade of extremely sigˉ nificant variation (coefficient of variation ≥ 30); ten natural trun k extension charactersˉheight of main stem, height of wholeˉstem, DBH, basal diameter of main stem, d iameter at half main stem height, diamˉ eter at top end of main stem, diameter at half trunk height, mai n stem volume/wholeˉstem volume, fromˉ quotient of main stem and mean taper of main stem belonged to mi ddle grade variation (15≤coefficient of variation<30); whereas four natural trunk extension characters, whi ch were height of tree, main stem formˉfactor, main stem formˉquotient and crown breadth, belonged t o the low grade variation (coefficient of variation<15);(2) height of natural trunk extension played an important role in affecting and determiˉ ning overall performance of natural trunk characters of P.elongata cl ones;(3) the key to improve straightˉ ness of stem and taper of P.elongata was to improve its natural tr unk extension;.(4) univariate analysis of variance proved both straightness of stem had significant differen ce among while the other 21 natural trunk extension had extremely significant difference;(5)multivariate analys is of variance proved natural trunk exˉ tension characters had extremely significant difference among the clo nes of P.elongata ;(6)Duncan analysis showed Duncan Grouping of natural trunk characters by clones of P .elongata ;(7) principal component aˉ nalysis not only determined the top three principal components but a lso their respective contribution rate as wel as their accumulative contribution rate.

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备注/Memo

备注/Memo:
收稿日期:2008ˉ04ˉ22 修回日期:2008ˉ05ˉ18 基金项目:河南省自然科学基金项目( 0611032600) 作者简介:叶金山,男,博士,副研究员,主要从事泡桐遗传育种研究。
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