[1]吕春华,陈 芬,王伟伟,等.干旱胁迫对小叶红叶石楠光合及其他生理作用的影响[J].江苏林业科技,2015,42(01):11-15.[doi:10.3969/j.issn.1001-7380.2015.01.003]
　LYU Chun-hua,CHEN Fen,WANG Wei-wei,et al.Effect of drought stress on the photosynthetic trait and another physiology of Photinia lochengensis seedling[J].Journal of Jiangsu Forestry Science &Technology,2015,42(01):11-15.[doi:10.3969/j.issn.1001-7380.2015.01.003]
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干旱胁迫对小叶红叶石楠光合及其他生理作用的影响()
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江苏林业科技[ISSN:1001-7380/CN:32-1236/S]

卷:
第42卷
期数:
2015年01期
页码:
11-15
栏目:
试验研究
出版日期:
2015-02-20

文章信息/Info

Title:
Effect of drought stress on the photosynthetic trait and another physiology of Photinia lochengensis seedling
文章编号:
1001-7380(2015)01-0011-05
作者:
吕春华1; 陈 芬1; 王伟伟2; 王 昊1
1.江苏省农业科学院宿迁农业科学研究所,江苏 宿迁 223800;
2.江苏省林业科学研究院,江苏 南京 211153
Author(s):
LYU Chun-hua1;  CHEN Fen1;  WANG Wei-wei2;  WANG Hao1
1.Suqian Institute of Agricultural Sciences,Jiangsu Academy of Agricultural Sciences,Suqian,223800 China;
2. Jiangsu Academy of Forestry, Nanjing 211153, China
关键词:
小叶红叶石楠;  干旱胁迫;  生理特性;  光响应曲线
Keywords:
Photinia lochengensis;  Drought Stress;  Physiological trait;  Light response curve
分类号:
S687
DOI:
10.3969/j.issn.1001-7380.2015.01.003
文献标志码:
A
摘要:
以2年生小叶红叶石楠扦插苗为研究对象,通过盆栽控水试验,测定在不同程度的干旱胁迫下叶片相对含水量、丙二醛(MDA)含量、脯氨酸含量、可溶性糖、可溶性蛋白及光响应等生理指标,以分析其生理响应。结果表明:(1)在轻度和中度干旱胁迫下,叶片相对含水量、MDA、脯氨酸和可溶性糖含量与对照之间无显著(P>0.05)差异,而可溶性蛋白含量显著低于对照(P<0.05); 在重度干旱胁迫下,叶片相对含水量显著下降,仅为对照的47.16%; MDA含量快速升高且显著高于对照; 脯氨酸含量则急剧上升,极显著高于对照; 而可溶性糖含量显著下降; 可溶性蛋白含量与对照之间没有显著性差异;(2)随着干旱胁迫强度的加剧,小叶红叶石楠光合速率、光饱和点以及表观量子效应均呈下降趋势;(3)综合分析各生理指标,认为小叶红叶石楠在干旱胁迫下,通过减少叶片相对含水量,增加渗透调节物质,降低光合速率等生理响应,来抵御干旱胁迫对其的影响。
Abstract:
By using the leaves of two-year-old Photinia lochengensis cutting seedling, we determined RWC(relative water content), MDA, proline, soluble sugars, soluble proteins and light response under different levels of drought stress. The result showed as follows,(1)Under mild and moderate drought stress, no significant(P>0.05)difference occurred in RWC, MDA, proline and soluble sugar content between treatments and CK while the soluble protein content of treatments was significantly(P<0.05)lower.(2)Under severe drought stress, RWC decreased significantly, only 47.16% of CK. MDA and proline content increased rapidly, significantly higher, and extremely significantly higher than CK. Soluble sugar content decreased significantly. No significant difference appeared in soluble protein content between treatment and CK.(3)With the intensification of drought stress, photosynthetic rate, light saturation point and apparent quantum effect declined. We concluded that under drought stress, by reducing RWC, increasing osmolytes, lowing photosynthetic rate and another physiological responses, Photinia lochengensis gained drought resisting capacity.

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备注/Memo

备注/Memo:
收稿日期:2014-09-25; 修回日期:2014-11-05
基金项目:江苏省农业科技自主创新资金项目“矮生红叶石楠规模化生产技术集成创新示范”(CX(12)3010)
作者简介:吕春华(1975-),女,江苏宿迁人,高级工程师,大学本科毕业,从事林木育种科研工作。E-mail:lchua740414@126.com。
更新日期/Last Update: 2015-02-20