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| 楸树与滇楸种间杂交组合苗期性状遗传变异 | |
| 引用本文： | 赵鲲,王军辉,焦云德,张建祥,王丽静.楸树与滇楸种间杂交组合苗期性状遗传变异[J].安徽农业科学,2013,41(10):4427-4430. |
| 作者姓名： | 赵鲲 王军辉 焦云德 张建祥 王丽静 |
| 作者单位： | 1. 洛阳农林科学院,河南洛阳,471000 2. 中国林业科学研究院林业研究所,北京,100091 3. 河南嵩县五马寺林场,河南洛阳,471400 |
| 基金项目： | "十一五"国家科技支撑计划课题 |
| 摘 要： | 目的]研究楸树与滇楸种间杂交组合苗期性状遗传变异。方法]以25株滇楸优树为父本、23株楸树优树为母本,采用常规杂交方法,进行种间杂交育种,对不同杂交组合的可配性及1年生播种移栽苗、两根一干平茬苗的物候期、苗高、胸径进行分析研究。结果]不同组合的可配性、物候期、苗高、胸径均存在极显著差异。一根一干组合苗高、胸径的遗传力为73.75%、71.83%,二根一干组合苗高、胸径的遗传力为75.79%、60.63%,其遗传特性突出,遗传变异丰富。结论]苗高遗传力比胸径高。以苗高进行选择和改良能够获得较大的遗传增益。 |
| 关 键 词： | 楸树 滇楸 杂交组合 苗期性状 遗传变异 |
Genetic Variation of the Seeding Traits in Interspecific Hybridization of Catalpa bungei and Catalpa fargesii |
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| Institution: | ZHAO Kun et al(Luoyang Institute of Agriculture and Forestry,Luoyang,Henan 471000) |
| Abstract: | Objective] To study genetic variation of the seeding traits in interspecific hybridization of Catalpa bungei and Catalpa fargesii.Method] The crossbred experiment was conducted with 25 Catalpa duclouxii Dode plus as male parent and 23 Catalpa bungei plus as female parent.The experiment was conducted in cross-hybrid breeding between species based on the conventional methods and run analytical studies on the interspecific hybridization of different hybridized combination,1 year-old sprout seedling transplanting,the phenological period of the stumping,the nursery height and the diameter at breast hight(DBH).Result] The results showed that the effect of crossing combination was significant or highly significant.The family heritabilities of 1 year-old sprout's nursery height and DBH were 73.75% and 71.83%;while the two-year-old sprout were 75.79% and 60.63%.The genetic characteristics is outstanding and the genetic variation is rich.Conclusion] The heritability of seedling hight is higher than DBH.With seedling height to select and improve could obtain higher genetic profit. |
| Keywords: | Catalpa bungei Catalpa fargesii Crosses Seedling characters Genetic variance |
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