崔永蘭　呂國(guó)政　石俊閣　

摘　要：在11年生泡桐雜交種試驗(yàn)林中選擇有代表性的單株150棵，研究了23個(gè)與干形相關(guān)的性狀．結(jié)果表明：泡桐接干類型分為難接干、徒長(zhǎng)枝接干、連續(xù)接干3種；23個(gè)性狀中有19個(gè)性狀在不同接干類型間差異極顯著；干形性狀的前3個(gè)主導(dǎo)因子分別為接干材積、主干材積和主干尖削度．連續(xù)接干是泡桐干形選擇的方向．
關(guān)鍵詞：泡桐；干形性狀；接干類型；變異
分類號(hào)：S792.43　文獻(xiàn)標(biāo)識(shí)碼：A
文章編號(hào)：1000-2340(2001)01-0070-04

Determination of the types of joint stem and analysis of the stem form correlative characteristics of paulownia

CUI Yong-lan（Henan Agricultural University,Zhengzhou 450002,China）　
L Guo-zheng（Zhongmu Forest Farm,Zhongmu 451450,China）　
SHI Jun-ge（Liulin town government Jinshui District,Zhengzhou 450045,China）　

Abstract：One hundred and fifty representative paulownia trees were observed in eleven-year-old paulownia hybridization in order to research the characteristics related to stem form.The results are as follows:paulownia joint stem can be divided into three kinds:difficult joint stem,discontinuous joint stem,continuous joint stem.Nineteen characteristics out of twanty-three ones are significantly different.The three principal factors affecting the stem form characteristics are volume of joint stem,volume of primary stem and the tapering grade of the primary stem.Continuous joint stem is the direction of paulownia stem form selection.
Keywords：paulownia;stem form characteristics;type of joint stem;variability