[1]李上前.柳杉一代种子园半同胞家系遗传变异分析[J].江苏林业科技,2018,45(05):10-13.[doi:10.3969/j.issn.1001-7380.2018.05.002]
　Li Shangqian.Analysis of genetic variation of half-sibs in the seed orchard of Cryptomeria fortunei[J].Journal of Jiangsu Forestry Science &Technology,2018,45(05):10-13.[doi:10.3969/j.issn.1001-7380.2018.05.002]
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柳杉一代种子园半同胞家系遗传变异分析()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第45卷
期数:
2018年05期
页码:
10-13
栏目:
试验研究
出版日期:
2018-10-15

文章信息/Info

Title:
Analysis of genetic variation of half-sibs in the seed orchard of Cryptomeria fortunei
文章编号:
1001-7380（2018）05-0010-04
作者:
李上前
福建省霞浦杨梅岭国有林场，福建 霞浦 355100
Author(s):
Li Shangqian
Yangmeiling National Forest Farm of Xiapu，Xiapu 355100，China
关键词:
柳杉; 一代种子园; 半同胞家系; 遗传变异
Keywords:
Cryptomeria fortunei ;  First generation seed orchard;  Half-sib family;  Genetic Variation
分类号:
S722.8+3;S791.31
DOI:
10.3969/j.issn.1001-7380.2018.05.002
文献标志码:
A
摘要:
以福建省霞浦杨梅岭国有林场柳杉一代种子园5年生家系为研究对象，对子代林树高、胸径、材积和冠幅等生长性状遗传变异进行了测定与分析。结果表明：家系胸径、树高、材积、冠幅平均值分别为11.64 cm，6.75 m，0.040 3 m3，2.07 m，27个参试家系材积生长量均大于对照；生长性状总体变异系数为材积>胸径>冠幅>树高，家系内变异系数大于家系间变异系数；方差分析表明，家系间胸径、树高、材积存在极显著差异，冠幅差异不显著；柳杉半同胞子代林胸径、树高、材积、冠幅的家系遗传力分别为为0.41，0.16，0.36，0.16，单株遗传力分别为0.78，0.60，0.76，0.33；各性状期望遗传增益分别为6.75%，0.47%，11.79%，0.52%，现实增益分别为16.47%，2.92%，32.76%，3.27%，27个家系生长表现优异。研究结果可为探索子代林生长变异规律，一代种子园管理、杂交育种、优良家系（无性系）评选，及下一代育种群体构建提供参考。
Abstract:
The 5-year-old half-sib descendants of Cryptomeria fortunei was studied to explore the genetic variation pattern of the growth traits (height, DBH, volume and crown width respectiveiy) of the progeny forest seed orchard from the forest in Yangmeiling Forestry Farm, Xiapu, Fujian Province.The results showed that the average values of tree height, DBH, volume and crown width of half-sib progeny families were 11.64 cm, 6.75 m, 0.040 3 m3,2.07 m, respectively.The volume increment of 27 half-sib progeny was higher than that of control.And the overall coefficient of variation of growth traits was in such an order as volume> breast diameter> crown width> tree height, CVw was greater than CVf. Analysis of variance showed that there were extremely significant differences in breast diameter, tree height, and volume, but not significant in crown width among families.The hf/sup>2 of the tree height, DBH, volume, and crown width were 0.41, 0.16, 0.36, and 0.16 respectively, and their hi/sup>2 were 0.78, 0.60, 0.76 and 0.33 respectively.The expected genetic gain (relative to control) for each trait was 6.75%, 0.47%, 11.79% and 0.52%, respectively, and the reality gain(compared to control) was 16.47%, 2.92%, 32.76%, and 3.27% respectively .The 27 half-sib families performed excellently in the growth.The research results could be reference for the generation of seed garden management, cross breeding, selection of elite families (clonal), and construction of the next generation breeding population.

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备注/Memo

备注/Memo:
收稿日期：2018-08-10;修回日期：2018-09-26
作者简介：李上前（1979- ），男，福建霞浦人，工程师，学士。主要从事柳杉良种繁育等相关科研工作及营造林、林木采伐、森林保护管理工作。
更新日期/Last Update: 2018-11-22