| 杉木主要生长性状配合力分析及杂种优势的利用 |
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| 引用本文： | 王赵民,陈益泰.杉木主要生长性状配合力分析及杂种优势的利用[J].林业科学研究,1988(6):614-624. |
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| 作者姓名： | 王赵民 陈益泰 |
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| 作者单位： | 中国林业科学研究院亚热带林业研究所
(王赵民)，中国林业科学研究院亚热带林业研究所(陈益泰) |
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| 摘 要： | 7个杉木亲本按全双列交配设计,对4年生杉木的树高、胸径、枝盘数、分枝数及冠幅的一般配合力、特殊配合力、反交效应、自交效应及杂种优势作了分析和计算。结果表明:①5个数量性状主要受一般配合力效应所控制,②在特定亲本的交配组合间特殊配合力及反交效应也有一定影响;③杉木具有较高的自交率,但衰退是普遍的,在良种繁育及长期育种中应予注意避免或利用;④在杉木杂交组合中,常出现超亲正向杂种优势,这些杂种优势多与亲本的一般配合力有关。在利用杂种优势的育种中,一般配合力可作为选择亲本的一个标准。
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| 关 键 词： | 杉木杂交 配合力 反交效应 自交效应 杂种优势 |
| 收稿时间： | 1988/4/15 0:00:00 |
AN ANALYSIS ON THE COMBINING ABILITY OF MAIN GROWTH CHARACTER IN CHINESE FIR AND THE APPLICATION OF ITS HETEROSIS |
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| Wang Zhaomin and Chen Yitai.AN ANALYSIS ON THE COMBINING ABILITY OF MAIN GROWTH CHARACTER IN CHINESE FIR AND THE APPLICATION OF ITS HETEROSIS[J].Forest Research,1988(6):614-624. |
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| Authors: | Wang Zhaomin and Chen Yitai |
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| Institution: | The Research Institute of Subtropical Forestry CAF |
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| Abstract: | A diallel crossing design which contained seven parents of Cunninghamia lanceolata was carried out. From statistical analysis of general and special combining ability, effect in back and self crossing, and heterosis of five characters--height, breast-diameter, numbers of knot and branch, crown-diameterin four year's Cunninghamia lanceolata, the results obtained are as follows: (1) These five quantitative characters are mainly controlled by the effect of general combining ability; (2) There are also some effect of special combining ability and back crosses among the detinite parent's combinations; (3) Chinese Fir has considerable self-crossing rate but its failing effect is common, which we should pay attention to avoid or apply in the practice of breeding good strains and in the study on long term breeding; (4) It appears frequently the super-parent positive heterosis. These heterosis often related to general combining ability which could be acted as a standard of selecting parent when we make use of heterosis to breeding. |
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| Keywords: | Chinese fir crossing combining ability effect of back-cross effect of self-cross heterosis |
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