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| 光皮桦优良单株自由授粉子代苗期性状的遗传变异 | |
| 引用本文： | 郑仁华,杨宗武,肖石海,郑作孟,傅忠华,赵世荣. 光皮桦优良单株自由授粉子代苗期性状的遗传变异[J]. 植物资源与环境学报, 2001, 10(4): 52-54 |
| 作者姓名： | 郑仁华 杨宗武 肖石海 郑作孟 傅忠华 赵世荣 |
| 作者单位： | 1. 福建省林业科学研究院国家林业局南方山地用材林培育重点实验室福建福州 350012 2. 福建省林木种苗总站福建福州 350003 3. 福建省邵武卫闽国有林场福建邵武 354006 |
| 基金项目： | 福建省科学技术厅项目(98-Z-117) |
| 摘 要： | 光皮桦 (ＢｅｔｕｌａｌｕｍｉｎｉｆｅｒａＨ .Ｗｉｎｋｌ.)为落叶阔叶大乔木 ,零星分布于我国南方各省 (区 ) [1] 。近年来 ,由于装饰装璜市场对光皮桦木材的需求量急剧增加 ,使得天然林遭到过度采伐 ,造成光皮桦天然林资源锐减 ,致使光皮桦可利用资源极少 ,处于渐危状态。有关学者就光皮桦的天然种群结构、种群动态等进行研究 ,探明了光皮桦种群的结构特征和种群演变规律等[2～ 5] ,对光皮桦的繁殖方法及苗期生长特性也进行了探讨 ,揭示苗期生长特性随时间序列的变化趋势[6,7] ;但在遗传改良方面的研究甚少[8] 。鉴于此 ,作者在现有天然… |
| 关 键 词： | 光皮桦 自由授粉家系 苗期性状 遗传变异 桦树 |
| 文章编号： | 1004-0978(2001)04-0052-03 |
| 修稿时间： | 2001-08-06 |
The genetic variations of seedling traits among open-pollinated families of plus trees of Betula luminfera H. Winkl. |
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| ZHENG Ren-hua {},YANG Zong-wu {},XIAO Shi-hai {},ZHENG Zuo-meng {},FU Zhong-hua {},ZHAO Shi-rong {}. The genetic variations of seedling traits among open-pollinated families of plus trees of Betula luminfera H. Winkl.[J]. Journal of Plant Resources and Environment, 2001, 10(4): 52-54 | |
| Authors: | ZHENG Ren-hua {} YANG Zong-wu {} XIAO Shi-hai {} ZHENG Zuo-meng {} FU Zhong-hua {} ZHAO Shi-rong {} |
| Affiliation: | ZHENG Ren-hua {1},YANG Zong-wu {1},XIAO Shi-hai {2},ZHENG Zuo-meng {3},FU Zhong-hua {1},ZHAO Shi-rong {3} |
| Abstract: | The seedling stage test on 55 open-pollinated families of plus trees of Betula luminifera H. Winkl. from Shaowu, Nanping and Wuping in Fujian Province was carried out in State-owned Forest Farm of Weimin, Shaowu. The genetic variations of Betula luminifera were studied, based on the investigation of 1-year-old seedling traits from different families. The results showed that there were abundant variations within the Betula luminifera and very significant differences among families in seedling height, diameter and lateral branch. The variations were mainly controlled by genetic factors. According to this analysis, 11 excellent families were tentatively selected, the average genetic gain of height and diameter were 18.72% and 10.44% respectively. The selection effect was very striking. The Shaowu region was probably a superior genetic resource area of Betula luminifera . |
| Keywords: | Betula luminifera H. Winkl. open-pollinated family seedling trait genetic variation |
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