| 白桦杂交良种的早期测定 |
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| 引用本文： | 于洪芝,张胜.白桦杂交良种的早期测定[J].防护林科技,2009(1):30-31. |
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| 作者姓名： | 于洪芝 张胜 |
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| 作者单位： | 大兴安岭林业集团公司森林经营部技术推广站,黑龙江,加格达奇,165000 |
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| 摘 要： | 通过对大兴安岭林业集团公司森林经营部技术推广站白桦强化种子园中的3年生杂交的白桦幼树高生长及径生长资料进行方差分析，结果表明：白桦不同杂交品系间存在显著差异，初步筛选出XBH23×J欧2和XBH23XJ欧3两个优良家系，2个试验组树高、地径的遗传增益分别为47．2～49．5扣26．2～33．0。
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| 关 键 词： | 白桦 杂交育种 早期测定 |
Early Determination of Hybrid Superior Variety of Betula platyphylla Suk. |
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| YU Hong-zhi,ZHANG Sheng.Early Determination of Hybrid Superior Variety of Betula platyphylla Suk.[J].Protection Forest Science and Technology,2009(1):30-31. |
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| Authors: | YU Hong-zhi ZHANG Sheng |
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| Institution: | Technology Extention Station of Forest Management Branch in Daxing'anling Forestry Group Company;Jiagedaqi 165000;Heilongjiang;China |
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| Abstract: | Variance analysis about the height and diameter growth of 3-year-old hybrid sapling of Betula platyphylla Suk.in seed orchard of birch in technology extention station of forest management branch in Daxing'anling forestry group Co.was conducted.Result shows that different hybrid strains have significant differences.Two superior varieties including XBH23×J Ou No.2 and XBH23×J Ou No.3 were screened out.Genetic gain of tree height and DBH of 2 test groups is 47.2-49.5 and 26.2-33.0,respectively. |
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| Keywords: | Betula platyphylla Suk cross breeding early determination |
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