南京林业大学学报(自然科学版) ›› 2009, Vol. 33 ›› Issue (06): 83-.doi: 10.3969/j.jssn.1000-2006.2009.06.019

• 研究论文 • 上一篇    下一篇

干热河谷引种沙漠葳的抗旱生理特征

孙永玉1,2,陈艳彬3,张春华1,罗长维1,李昆1,2   

  1. 1.中国林业科学研究院资源昆虫研究所,云南昆明650224;2.国家林业局元谋荒漠生态定位站,云南元谋651302; 3.四川省攀枝花市国有林场,四川攀枝花617007
  • 出版日期:2009-12-18 发布日期:2009-12-18
  • 基金资助:
    收稿日期:2008-12-17修回日期:2009-03-20基金项目:国家“十一五”科技支撑计划(2006BAD03A0101、2006BAD03A0304)作者简介:孙永玉(1974—),博士,研究方向为林木抗旱生理生态与种苗培育。Email: cafsdren@163.com。引文格式:孙永玉,陈艳彬,张春华,等. 干热河谷引种沙漠葳的抗旱生理特征[J]. 南京林业大学学报:自然科学版,2009,33(6):83-86.

Physiological characteristics for drought resistant Chilopsis linearis, an introduction tree to dryhot valley

SUN Yongyu1,2, CHEN Yanbin3, ZHANG Chunhua1, LUO Changwei1, LI Kun1,2   

  1. 1.Research Institute of Resource Insects, CAF, Kunming 650224, China; 2.SFA’s Yuanmou Degraded Ecosystem Location Research Station, Yuanmou 651302, China; 3.Panzhihua State Forest Farms, Panzhihua 617007, China
  • Online:2009-12-18 Published:2009-12-18

摘要: 以引种于干热河谷典型地区元谋的沙漠葳(Chilopsis linearis)为研究对象,测定其旱季水势、叶片保水能力、净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Cond)、胞间CO2浓度(Ci)等生理指标的日动态变化。结果表明:在干旱胁迫下,沙漠葳植株通过降低水势以有效地从土壤中吸取水分;沙漠葳叶片失水曲线总体平缓,水分保持能力强;其光合日进程曲线为双峰曲线,在一天中温度、光照和水分条件恶劣的14:00左右仍具有一定的光合能力。耐旱生理研究与田间生长观察表明,沙漠葳可适应干热河谷的恶劣气候并能正常生长。

Abstract: Study on daily changes in physiological characteristics Chilopsis linearis, a introduction tree to dryhot valley. The testing index included water potential, detached leaves dehydration change, photosynthesis rate,stomata conductance, leaf transpiration rate and intercellular CO2 concentration. The results showed that Ch.linearis reduced water potential to availably absorb water from soil under drought stress , detached leaves dehydration was slow and water keeping ability was better. Ch.linearis photosynthesis daily progress was a double peak curve, it maintained low photosynthesis at 14:00 when the temperature, sunlight and soil water were all bad. The results of physiological characteristics and field growing showed that Ch.linearis adapted adverse weather of dryhot valley and grew normally.

中图分类号: