| 杉木幼龄期种内杂种优势及遗传力的初步研究 |
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| 引用本文： | 郑仁华,林心和.杉木幼龄期种内杂种优势及遗传力的初步研究[J].福建林业科技,1995(Z1). |
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| 作者姓名： | 郑仁华 林心和 |
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| 作者单位： | 福建省林业技术发展研究中心，福建省来舟林业试验场 |
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| 摘 要： | 本文报道了杉木７个优良无性系３母本×４父本测交系交配设计幼龄期试验的初步结果：（１）杉木幼龄期的遗传力较小，苗期的遗传力低于定植１年后的遗传力，苗高ｈ２Ｎ为２１．０４％，地径ｈ２Ｎ为０；树高ｈ２Ｎ为３７．１６％，ｈ２Ｂ为４１．５３％，地径ｈ２Ｎ为２０．６９％，ｈ２Ｂ为４５．９１％。（２）杂种优势效应明显，最高达３２．０２％，杂种优势变幅大，为—３３．３９％—３２．０３％。（３）在第一代种子园亲本间再行控制杂交，能进一步获得具有显著效应的杂交组合，供高世代育种用。
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| 关 键 词： | 杉木，杂种优势，遗传力 |
Preliminary Study on the Intraspecific Hybrid Vigor and Genetic Ability at the Young Stage of
Cunninghamia lanceolata |
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| Zheng Renhua Lin Xinhe Yang Zongwu.Preliminary Study on the Intraspecific Hybrid Vigor and Genetic Ability at the Young Stage of
Cunninghamia lanceolata[J].Journal of Fujian Forestry Science and Technology,1995(Z1). |
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| Authors: | Zheng Renhua Lin Xinhe Yang Zongwu |
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| Abstract: | This article reports the following preliminary results of tester line mating design
experiment ofseven fine clones(three female parents X four male parents)of Cunninghamia
lanceolata at the young stage:(1)the genetic ability of C. lanceolata is smaller at the young
stage:(2)the hybrid vigor effects are evidentand the highest hybrid vigor reaches
32.02%:and(3)the control hybridization among parents in the first-generation seed orchard is
conducted and then the hybridization combinations with significant effects can befurther
obtained for the breeding of high lines. |
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| Keywords: | Cunninghamia lanceolata hybrid vigor genetic ability |
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