[1]黄国伟,彭婵,陈慧玲,等. 不同种源红椿苗期生长及光合特性比较[J].西北林学院学报,2017,32(2):123-129.[doi:10.3969/j.issn.1001-7461.2017.02.21]
　HUANG Guo-wei,PENG Chan,CHEN Hui-ling,et al. Comparison of the Growth and Photosynthetic Characteristics of Toona ciliata Seedlings from Different Provenances[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(2):123-129.[doi:10.3969/j.issn.1001-7461.2017.02.21]
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 不同种源红椿苗期生长及光合特性比较()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第2期
页码:
123-129
栏目:
出版日期:
2017-03-31

文章信息/Info

Title:
 Comparison of the Growth and Photosynthetic Characteristics of Toona ciliata Seedlings from Different Provenances
文章编号:
1001-7461(2017)02-0123-07
作者:
 黄国伟; 彭婵; 陈慧玲; 王瑞文; 张新叶*
 （湖北省林业科学研究院，湖北 武汉 430075）
Author(s):
 HUANG Guo-wei; PENG Chan; CHEN Hui-ling; WANG Rui-wen; ZHANG Xin-ye*
 (Hubei Academy of Forestry,Wuhan,Hubei 430075,China)
关键词:
 ; 种源; 生长特征; 日变化; 光响应曲线
Keywords:
 ; provenance;  growth characteristic;  diurnal photosynthesis change;  Pn-light response curve
分类号:
S722
DOI:
10.3969/j.issn.1001-7461.2017.02.21
文献标志码:
A
摘要:
 以不同种源1年实生苗为试验材料，通过测量其生长及光合特征，比较不同种源间差异，为种源评价和筛选提供理论基础。结果表明，不同种源间生长特征存在显著差异，如种源LZ的株高达143.43 cm，而种源JG的株高仅为47.50 cm，WY的地径超过JG地径73.60%以上，种源间变异丰富；不同种源光合特征变化规律存在差异，日变化曲线峰值大小差异明显，最大净光合速率（Pnmax）在10～14 μmol·m-2·s-1之间；单一的光合参数与生长的相关性往往没有达到显著水平（P>0.05），不过光饱和点(LSP)和Pnmax与生长均呈正相关，而补偿点(LCP)和暗呼吸速率(Rd)与生长均呈负相关，这在一定程度上反映了较强的光适应性和光合潜力，较高的弱光利用效率和低呼吸消耗有利于红椿生物量积累和植株生长。可见，红椿不同种源间苗期生长生理特征差异明显，遗传多样性丰富，种源LZ和WY选育潜力巨大。
Abstract:
 One year old Toona ciliata seedlings from different provenances were used as the materials,to study the growth and photosynthetic characteristics were measured to provide a theoretical basis for the evaluation and selection of provenances.The results showed that there were significant differences in growth traits among different provenances (P<0.05),the height of the seedlings from LZ was the highest about 143.43 cm，but the height from JG was only 47.50 cm,the diameter from WY was 73.60% more than JG，the genetic resources of provenances were very rich.There were some differences in the photosynthetic characteristics among provenances,the peaks of curves changed significantly different,the maximum net photosynthetic rate (Pnmax) was from 10 μmol·m-2·s-1 to 14 μmol·m-2·s-1.There was no significant correlation between growth characteristic and single photosynthetic characteristic (P>0.05),but the Pnmax and LSP were positively correlated,the LCP and Rd were negatively correlated.The results indicated that strong light adaptability and potential photosynthesis,as well as strong low-light use efficiency and low consumption were conducive to plant growth and biomass accumulation.It was concluded that significant differences existed in the growth and photosynthetic characteristics of T.ciliata from different provenances,genetic diversity was rich in provenances,and the LZ and WY had a great development value.

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备注/Memo

备注/Memo:
 收稿日期：2016-07-15修回日期：2016-10-17
基金项目：湖北省林业科学研究院青年基金“红椿种质资源收集及无性快繁技术研究”(2016YQNJJ07)。
作者简介：黄国伟，男，助理研究员，研究方向：林木遗传育种。E-mail:461134995@qq.com
*通信作者：张新叶，女，研究员，博士，研究方向：林木遗传育种。E-mail:1641135733@qq.com
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