The study was conducted on the main photosynthetic physiological indicators of seedlings from seven clones of t Catalpa bungei'jinsiqiu'.The results showed that there were significant differences in photosynthetic rate(Pn),transpiration rate(Tr),and stomatal conductance(Gs)among the seven clones,and the daily variation curves could be divided into four types based on the trend of change.The transpiration rate is positively correlated with the variation trend of stomatal conductance days.
维普
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