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| 杉木无性系微纤丝角遗传变异的研究 | |
| 引用本文： | 黄寿先,施季森,李力,杨立伟,杨立国,翁玉榛,余荣卓,陈孝丑,郑仁华.杉木无性系微纤丝角遗传变异的研究[J].南京林业大学学报(自然科学版),2005,29(1):11-14. |
| 作者姓名： | 黄寿先 施季森 李力 杨立伟 杨立国 翁玉榛 余荣卓 陈孝丑 郑仁华 |
| 作者单位： | 1. 南京林业大学森林资源与环境学院,江苏,南京,210037;广西大学林学院,广西,南宁,530001 2. 南京林业大学森林资源与环境学院,江苏,南京,210037 3. 福建省洋口林场,福建,顺昌,353211 4. 福建省林业科学研究院,福建,福州,350012 |
| 基金项目： | 国家“十五”科技攻关项目(2002BA515B0101)，福建省林木种苗科技攻关项目 |
| 摘 要： | 对55个杉木无性系管胞微纤丝角的遗传变异进行了研究。结果表明，管胞微纤丝角在无性系间差异极显著；广义遗传力变化为0．734～0．867，微纤丝角无性系间的差异受很强的遗传控制；按10％的入选率，无性系选择的平均遗传增益为19．51％。无性系管胞微纤丝角自髓心向外随树龄的增加逐渐降低，第10年的微纤丝角比第1年的约小32．1％，方差分析表明，从第3年起，不同林龄微纤丝角之间的相关系数达到了极显著水平，说明对管胞微纤丝角进行早期选择是有效的。 |
| 关 键 词： | 杉木 无性系 微纤丝角 遗传增益 |
| 文章编号： | 1000-2006(2005)01-0011-04 |
| 修稿时间： | 2004年9月12日 |
Genetic Variation on Tracheid Microfibril Angle of Chinese Fir Clones |
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| HUANG Shou-xian.Genetic Variation on Tracheid Microfibril Angle of Chinese Fir Clones[J].Journal of Nanjing Forestry University(Natural Sciences ),2005,29(1):11-14. | |
| Authors: | HUANG Shou-xian |
| Institution: | HUANG Shou-xian~ |
| Abstract: | Genetic variations on tracheid microfibril angle of 55 Chinese fir clones were investigated.The results revealed that microfibril angle had a highly significant difference (among) clones.The broad sense heritability estimates of clones varied between 0.734 and (0.867),indicating the microfibril angle was under strong genetic control.The average genetic gains were 19.51% for the microfibril angle if 10% of the best clones was selected.The microfibril angle decreased with increase of growth ring age and the microfibril angle at the 10~(th) ring was about 32.1% less than that at the 1~(st) ring.The microfibril angle showed a highly significant difference (among) different rings.The correlations coefficients of microfibril angle between different tree ages since 3~(rd) growth ring were very significant indicating that early selection for the microfibril angle would be efficient. |
| Keywords: | Chinese fir Clone Microfibril angle Genetic gains |
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