摘要
水分在植物体内长距离传输是植物水分研究中一个很重要的研究方向（Tyree,1997;Steudle,2001;Zimmermann et al.,2002;2004）。
This paper briefly reviewed the long-distant water transportation and the association with plant drought and cold resistance.Vessels in plant xylem widely emerged cavitation and emblism when being subjected to drought and low temperature,which reflects to some degree plant drought or cold ressistance capacity.As for the resistance,capacity of recovering from vessel emblism plays an important role.A modified bubble manometer was employed to investigate root pressure of 52 bamboo species in spring of 2007,in Nanjing,China.The result showed the almost all species produced root pressure,which indicated that the root pressure exerted important influence on recovery of low temperature-induced emblism in winter.Additionally,in this study,an own-installed low temperature apparatus was used to locally treat bamboo culm and the responses of stomatal conductance and assimilation were monitored with a Li-6400 gas exchange system.All three species of bamboos immediately responded to a-10 ℃ treatment,suggesting that vessel cavitation would be a commen response to low temperature.Integration of root pressures and response of stomatal conductance and assimilation to low temperature reflected the cold resistance of the bamboo species.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2011年第8期176-181,共6页
Scientia Silvae Sinicae
基金
人事部2007年度留学回国人员科技活动择优资助项目
"十二五"科技支撑项目(2011BAD38B06)
关键词
竹子
根压
导管栓塞
低温
bamboo
root pressure
vessel emblism
low temperature
