| 红松天然林生长变异及早期选择的研究 |
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| 引用本文： | 周佳,王会仁,侯丹,夏德安.红松天然林生长变异及早期选择的研究[J].安徽农业科学,2014(30):10715-10716,10723. |
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| 作者姓名： | 周佳 王会仁 侯丹 夏德安 |
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| 作者单位： | 东北林业大学林木遗传育种国家重点实验室,黑龙江哈尔滨,150040 |
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| 摘 要： | 目的]探究红松早期选择的适宜年龄.方法]对小兴安岭5个种源25株红松天然林个体进行了调查.结果]红松天然林个体的生长变异随年龄增大而减小,40年是个体生长从激烈分化转为相对平稳的转折年龄.根据变异系数、相关系数和选择效率3个指标的分析,初步确定红松天然林早期选择的最佳年龄40年.可用40年的树高和胸径平方预估150年的材积.结论]为红松选择优树、确定遗传改良试验鉴定年龄等育种手段提供了理论依据.
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| 关 键 词： | 早期选择 早晚期相关 选择效率 |
Growth Variation and Early Selection of Nature Korean Pine Forest |
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| ZHOU Jia,WANG Hui-ren,HOU Dan,XIA De-an.Growth Variation and Early Selection of Nature Korean Pine Forest[J].Journal of Anhui Agricultural Sciences,2014(30):10715-10716,10723. |
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| Authors: | ZHOU Jia WANG Hui-ren HOU Dan XIA De-an |
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| Institution: | ( State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin, Heilongjiang 150040) |
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| Abstract: | Objective ] The aim was to explore the optimal age for early selection of Pinus koraiensis. Method ] 25 individual trees from 5 provenances of P. koraiensis in Xiaoxinganling area were studied. Result ] The growth variation of individual Korean pine trees decreased with the increase of age. Forty years was the turning point of individual growth from the competitive differentiation to the steady growth. Based on the analyses of three indicators variation coefficient, relative coefficient and selection efficiency, the optimal age for the early selection of natural Korean pine forest was 40 years. Thus the height and diameter＇ square of 40 years may be used to predict the volume of 150 years. Conclusion] The results provide theoretical basis for selection of plus tree of natural Korean pine forest and determining identified age of Genetic improvement test. |
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| Keywords: | Early selection Juvenile mature correlation Selection efficiency |
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