| 福建柏优树子代苗期性状遗传变异和生长节律研究 |
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| 引用本文： | 郑仁华,杨宗武,施季森,黄德龙,黄秀美.福建柏优树子代苗期性状遗传变异和生长节律研究[J].林业科学,2003(Z1). |
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| 作者姓名： | 郑仁华 杨宗武 施季森 黄德龙 黄秀美 |
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| 作者单位： | [1]福建省林业科学研究院 [2]南京林业大学 [3]福建省永安国有林场 [4]福州 |
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| 基金项目： | 国家“十五”科技攻关子课题“福建柏良种选育及栽培技术”，福建省林业厅项目“福建柏优树子代测定及栽培技术研究”部分内容 |
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| 摘 要： | 福建柏 (Fokieniahodginsii)是柏科 (Cupressaceae)福建柏属的唯一种 ,为我国特有的第一批珍稀濒危二级保护植物。因其生长较快、材质较好、栽培管理较容易、病虫害较少 ,因此是值得推广的优良用材树种 (杨宗武等 ,1 998;中国树木志编辑委员会 ,1 983;高兆蔚 ,1 994)。近年来 ,福建柏作为珍贵建筑材树种和抗逆性强的造林树种已越来越被重视 ,在南方各省区已成为杉木二代更新不可多得的好树种 ,推广前景广阔 (盛炜彤等 ,1 992 )。因此 ,开展福建柏的遗传改良研究 ,选育优良的遗传材料供生产推广应用 ,具有重要的意义。鉴于此 ,笔者从 1 998年开始进行福建柏优树选择、子代测定等工作。目前有关这方面的研究仅有少量有关种源试验苗期阶段的报道 (曾志光等 ,1 998;侯伯鑫等 ,2 0 0 0 ;郑仁华等 ,2 0 0 1 ;杨宗武等 ,2 0 0 1 ) ,而对优树子代测定的研究未见报道。本文主要报道子代苗期性状遗传变异和生长节律 ,以期为进一步研究奠定基础。1 材料与方法1 999年 1 0月中旬至 1 1月上旬 ,对 1 998— 1 999年在福建省和湖南省选...
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| 关 键 词： | 福建柏 优树 苗期 遗传变异 生长节律 |
STUDIES ON THE GROWTH RHYTHM AND GENETIC VARIATIONS OF TRAITS AMONG PLUS-TREE PROGENY FAMILIES OF FOKIENIA HODGINSII AT SEEDLING STAGE |
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| Zheng Renhua,Yang Zongwu.STUDIES ON THE GROWTH RHYTHM AND GENETIC VARIATIONS OF TRAITS AMONG PLUS-TREE PROGENY FAMILIES OF FOKIENIA HODGINSII AT SEEDLING STAGE[J].Scientia Silvae Sinicae,2003(Z1). |
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| Authors: | Zheng Renhua Yang Zongwu |
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| Institution: | Zheng Renhua 1) Yang Zongwu 3) |
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| Abstract: | The first progeny test on 131 plus-tree progeny families of Fokienia hodginsii selected from Fujian Province and Hunan Province was carried out in State-owned Forest Farm of Yong'an, Fujian. The average seedling height and seedling base diameter at one-year-old were 31.73*!cm and 4.05*!mm respectively. With statistical methods,such as variance and correlation analysis, the genetic variations of F. hodginsii were studied based on the investigation of one-year-old seedling traits from different families. The results showed that there were abundant variations within F. hodginsii and very significant differences among families in seedling height and base diameter. The variations in seedling height were more than those in seedling base diameter which were mainly controlled by genetic factors. There were very significant correlations among seedling heights at different stages based on the average total seedling height every 15 days. Genetic correlation coefficient was a good index to reveal the relationship among traits. The net growth of seedling height showed great difference at different stages. Its value was small at early stage and reached peak from August 30 to September 15 and from October 30 to November 15. But the net growth of seedling base diameter showed little difference at different stages. Its value ranged from 0.17*!mm to 0.22*!mm every 15 days. According to the seedling height, 15 excellent families were preliminarily selected from 131 tested families. The average genetic gains of 15 excellent families'seedling height and base diameter were 30.00% and 10.12% respectively. The averages of 15 excellent families'seedling height and base diameter were 42.1*!cm and 4.7*!mm respectively. The selection effect was very striking. |
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| Keywords: | Fokienia hodginsii Plus tree Seedling stage Genetic variation Growth rhythm |
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