四个杨树无性系在不同温度和相对湿度条件下净光合速率的比较研究*

Abstract

Abstract:

Effects of temperature and air relative humidity on net photosynthesis rate (P_n), light saturation point (LSP), light compcnsation point (LCP), apparent quantum yield (Φ), conductance of stomata (Cs) and transpiration were studied in controlled environments, using leaves of water-cultivated plants of four selected poplar clones:Populus simonii (Clone A), P.euromericana 28/86(Clone B), P.popularis 44(Clone C), and P.euromerlcana 25/86(Clone D).Results indicated that there was a variety of response patterns of LSP, LCP, Φ, Cs, maximum of P_n, and transpiration, to temperature and to RH among these four clones.This possibly reflects different ecotypic differences and provides evidence for early selection of poplar clones based on physiological characteristics.

Key words: Poplar clones, Effect of temperature, Effect of humidity, Photosynthesis

Xinsheng Hu,Jianwei Liu,Shiji Wang. COMPARISON OF THE NET PHOTOSYNTHESIS RATE OF FOUR POPLAR CLONES AT DIFFERENT TEMPERATURE AND HUMIDITY REGIMES[J]. Scientia Silvae Sinicae, 1997, 33(2): 107-116.

Figures/Tables 4

References 21

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COMPARISON OF THE NET PHOTOSYNTHESIS RATE OF FOUR POPLAR CLONES AT DIFFERENT TEMPERATURE AND HUMIDITY REGIMES

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