南京林业大学学报(自然科学版) ›› 2011, Vol. 35 ›› Issue (03): 27-.doi: 10.3969/j.jssn.1000-2006.2011.03.028

• 研究简报 • 上一篇    下一篇

自然低温胁迫对毛竹生理生化特性的影响应

叶青,魏建芬,解楠楠,姜琴,方伟*   

  1. 浙江农林大学,亚热带森林培育国家重点实验室培育基地,浙江临安311300
  • 出版日期:2011-06-13 发布日期:2011-06-13
  • 基金资助:
    收稿日期:2010-09-06修回日期:2010-12-30基金项目:浙江省科技厅重点项目(2009C12089);浙江省农业科技成果转化项目(2009D70101)作者简介:应叶青(1973—),副教授。*方伟(通信作者),教授。Email: fwl@zafu.edu.cn。引文格式:应叶青,魏建芬,解楠楠,等. 自然低温胁迫对毛竹生理生化特性的影响名[J]. 南京林业大学学报:自然科学版,2011,35(3):133-136.

Effects of natural low temperature stress on physiological and biochemical properties of Phyllostachys edulis

YING Yeqing,WEI Jianfen,XIE Nannan,JIANG Qin,FANG Wei*   

  1. The Nurturing Station for the State Key Laboratory of Subtropical Silviculture, Zhejiang Agriculture and Forestry University, Linan 311300,China
  • Online:2011-06-13 Published:2011-06-13

摘要: 选用3种不同年龄段毛竹作为试验材料,通过对自然越冬状态下毛竹各项生理指标和低温半致死温度的测试,研究了毛竹抗寒能力及其有关生理生化特性的变化。结果表明:从12月5日到翌年2月5日自然低温过程中,随着温度的变化,毛竹1年生、2年生实生苗和竹林中40 a以上1年生秆毛竹(1年生成竹)的叶绿素含量呈先降低后升高再降低的趋势,总降幅分别为21.46 %、42.38 %、22.76 %;SOD活性和MDA含量的变化趋势类似,先升高后降低;而POD活性为先升高后降低再升高;可溶性蛋白的含量呈先升高后持续降低,总降幅分别为16.43 %、29.46 %、29.61 %;而可溶性糖含量成竹高于1年生和2年生竹,但消耗量低于1年生和2年生竹;半致死温度为1年生(-13.697℃)较高,2年生(-15.426℃)次之,成竹(-18.393℃)较低。半致死温度与12月上旬的MDA含量呈显著负相关,与1月下旬的可溶性糖含量呈极显著正相关。由此表明,毛竹具有较强的抗寒性,并随着年龄的增长,植株的抗寒能力提高。

Abstract: With the measurement of physiological parameters and semilethal low temperature of 3 different ages of Phyllostachys edulis under natural overwintering condition, the coldresistant ability and its mechanism were studied. The results indicated that, with the decrease in air temperature under natural lowtemperature conditions, the chlorophyll content of 1 year,2 year and adult Ph. edulis decreased first, increased then, and decreased at last by a margin of 21.46 %,42.38 % and 22.76 %, respectively. The variation of SOD activity was similar with that of MDA content, which increased first and decreased at last, POD activity increased first, decreased then and increased at last, the content of soluble protein of 1 year, 2 year and adult Ph. edulis increased first, decreased at last by a margin of 16.43 %, 29.46 % and 29.61 %, respectively. The content of soluble sugar in adult Ph. edulis was higher than that in 1 year and 2 year Ph. edulis. Semilethal low temperature was the lowest (-18.393 ℃) in adult Ph. edulis, second (-15.426 ℃) in 2 year Ph. edulis and third in 1 year Ph. edulis, which indicated that the coldresistant of Ph. edulis was strong and increased along with the increment of age. LT50 was significant positively correlated with the content of soluble sugar in late January, but negatively correlated with the content of MDA in early December.

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