Progeny Test on the Natural Populations and Selection of Excellent Populations from Fraxinus mandshurica
作者: 兰士波 ：黑龙江省林业科学研究所，黑龙江 哈尔滨;
Abstract: Fraxinus mandshurica is one of the ancient relict flora species originated from the Tertiary period, which mainly produced in the eastern mountain to Northeast China and had an important scientific value for the study of the flora in the Paleogene and the climate in Quaternary ice age. By the method of positional observation of fixed standard fields, this thesis performed on discussing the genetic variation of the tree height and DBH from the natural populations and its open-pollinated progenies, and analyzing systematically the heritability and the genetic gains in quantity characters on the basis of analyzing the growth dynamic, the progeny test and its heredity effects, then screened out excellent ones from these populations. The research results had showed that there were greatly significant differences on the quantitative characters among the natural populations, and the coefficient of variance from the tree height [22.99%] was smaller, but its DBH [41.37%] was larger. On the other hand, there were greatly significant difference among its open-pollinated progenies of the tree height and DBH within natural populations too, and hold great interaction between these progenies and the blocks. Meanwhile, the growth characters had strong heritability, high genetic gain, and remarkable heredity effects. The heritability of tree height and its DBH were 0.825 and 0.781, and the genetic gain were 15.16% and 25.85%, respectively. Therefore, SHT and XIL were determined to be excellent natural populations both in the growth, resistance and adaptation with growth traits as the main evaluation index, which was applied in the advanced generation improvement breeding.
文章引用: 兰士波 (2016) 水曲柳自然群体子代测定及优异群体选择。 林业世界， 5， 21-31. doi: 10.12677/WJF.2016.53004
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