| 林木重要性状的杂种优势和遗传方式以及杂优预测的可能性 |
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| 引用本文： | 齐明,骆文坚,何贵平. 林木重要性状的杂种优势和遗传方式以及杂优预测的可能性[J]. 世界林业研究, 2010, 23(2): 75-80 |
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| 作者姓名： | 齐明 骆文坚 何贵平 |
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| 作者单位： | 1.中国林业科学研究院亚热带林业研究, 浙江富阳 311400 |
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| 基金项目： | 浙江省林业厅与中国林科院合作项目(2007SY09); 浙江省科技厅项目(2008C02004-2) |
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| 摘 要： | 林木杂交育种成功的先决条件, 取决于杂种具有的正向杂种优势是否明显, 因此林木杂种优势的机理研究十分重要。一般来讲, 林木重要性状的杂种优势产生的机理应和该性状的遗传控制方式一致, 但是林木重要性状的遗传控制方式取决于交配群体的遗传结构, 并和多种因素有关, 因而不应随便地根据几个随机亲本的配合力分析结果, 就断然肯定该树种杂交是否有前途。与以往更多地重视种间杂交的观点不同, 文中认为林木的种内杂交在林木多性状改良中也有着巨大的潜力, 并将发挥重要作用。最后根据林木杂种优势与配合力间的联系, 就其对林木杂优预测的影响提出了笔者的认识。
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| 关 键 词： | 杂种优势 基因作用方式 遗传距离 杂种优势的预测 |
| 收稿时间： | 2009-06-11 |
Heterosis, Genetic Control Mode of Important Traits and Possibility about Heterosis Prediction in Forest Trees |
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| Qi Ming,Luo Wenjian and He Guiping. Heterosis, Genetic Control Mode of Important Traits and Possibility about Heterosis Prediction in Forest Trees[J]. World Forestry Research, 2010, 23(2): 75-80 |
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| Authors: | Qi Ming Luo Wenjian He Guiping |
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| Affiliation: | 1.Reseach Institute of Subtropical Forestry, Chinese Academy of Forestry, Fuyang 311400, Zhejiang, China2.Zhejiang Forest Seedling Management Station, Hangzhou 310020, China |
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| Abstract: | A prerequisite of successful cross breeding of forest trees is whether positive heterosis of hybrids is obviously manifested or not.So it is very important to study the mechanism of heterosis.In general,mechanisms in which heterosis of important traits in forest trees generates are supposed to be consistent with genetic control mode of the important traits.But the genetic control mode of those important traits is decided by genetic structure of mating population,and is associated with multiple factors.So it... |
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| Keywords: | heterosis gene action mode genetic distance heterosis prediction |
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