不同种源木棉生长及光合特性研究

倪建中; 王伟; 郁书君; 贺漫媚; 张继方; 代色平

doi:10.3969/j.issn.1000-2006.2015.06.033

不同种源木棉生长及光合特性研究

倪建中,王伟,郁书君,贺漫媚,张继方,代色平

南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (06) : 185-189.

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南京林业大学学报（自然科学版） ›› 2015, Vol. 39 ›› Issue (06) : 185-189. DOI: 10.3969/j.issn.1000-2006.2015.06.033

研究简报

不同种源木棉生长及光合特性研究

倪建中¹,王伟¹,郁书君²,贺漫媚¹,张继方¹,代色平^1*

作者信息 +

Analysis of growth traits and photosynthetic characteristics of Bombax ceiba among different provenances

NI Jianzhong¹, WANG Wei¹, YU Shujun², HE Manmei¹, ZHANG Jifang¹, DAI Seping^1*

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文章历史 +

摘要

为了揭示自然条件下不同种源木棉在广州地区的生长和光合特性的差异,以海南昌江、广东广州、广东揭阳、福建厦门、四川攀枝花、云南红河州和云南景洪7个种源的木棉1年生苗为研究对象,测定其生长性状、叶片光合特性指标和CO₂响应曲线。结果表明:在一定范围内增加CO₂浓度,净光合速率(P_n)逐渐增大直至趋于稳定,不同种源木棉CO₂曲线特征参数有一定差异,但未达显著水平; 7个种源木棉的CO₂补偿点(CCP)在61.41～77.68 μmol/mol之间,CO₂饱和点(CSP)在667.98～860.58 μmol/mol之间。不同种源木棉的株高和气孔交换系数差异显著(P<0.05),表明不同种源间的长势和光合能力有较大差别; 相关性分析表明株高与种源的P_n呈显著正相关,表明P_n可作为选取种源的参考指标。

Abstract

The growth traits, photosynthetic characteristics and the response of photosynthesis rate to CO₂ concentration were measured for revealing the differences in growth and photosynthetic in one year old seedlings of Bombax ceiba from seven different provenances, including Changjiang of Hainan, Guangzhou and Jieyang of Guangdong, Xiamen of Fujian, Panzhihua of Sichuan, Honghezhou and Jinghong of Yunnan. The results indicated that net photosynthetic rate(P_n)of B. ceiba rose as CO₂ concentration increased in a specific range, the photosynthetic-CO₂ response parameters were different to some extent among different provenances, but the difference was not significant. The CO₂ compensation point(CCP)and the CO₂ saturation point(CSP)was 61.41-77.68 and 667.98-860.58 μmol/mol, respectively. There were significant difference(P<0.05)in height and the gas exchange parameters, which showed a relatively high difference of growth and photosynthetic characteristics among provenances, correlation analysis showed that plant height was significantly and positively related to P_n among provenances, indicating P_n could be used as a reference index for choosing provenance.

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倪建中,王伟,郁书君,贺漫媚,张继方,代色平. 不同种源木棉生长及光合特性研究[J]. 南京林业大学学报（自然科学版）. 2015, 39(06): 185-189 https://doi.org/10.3969/j.issn.1000-2006.2015.06.033

NI Jianzhong, WANG Wei, YU Shujun, HE Manmei, ZHANG Jifang, DAI Seping. Analysis of growth traits and photosynthetic characteristics of Bombax ceiba among different provenances[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2015, 39(06): 185-189 https://doi.org/10.3969/j.issn.1000-2006.2015.06.033

中图分类号： S718.43

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基金

收稿日期:2015-01-19 修回日期:2015-07-20
基金项目:广州市科技和信息化局应用基础专项(2013J4100086); 广州市科技和信息化局条件建设专项(2060402); 广州市财政局项目(2061300000166)
第一作者:倪建中,硕士生。*通信作者:代色平,高级工程师。E-mail:daiseping@126.com。
引文格式:倪建中,王伟,郁书君,等. 不同种源木棉生长及光合特性研究[J]. 南京林业大学学报:自然科学版,2015,39(6):185-189.