Study on the Tran spira tion Dynam ic Var ia tion of Phyllostachys edu lis

SHI Jian-min; GUO Qi-rong; YANG Guang-yao

Used L i-6400, the transp iration dynamic variation of Phy llostachys edulis was determined in deferent timescales. The results showed that the diurnal variation of transp iration rate ( Tr) changed with season, bimodality insummer and autumn, and single peak curve in winter and sp ring. The annual variation of transp iration followed asingle peak curve, the peak (3. 90 mmolm-2 ·s-1 ) occurred in August, the lowest was only 0. 29 mmolm-2 ·s-1in January, and the annualmean of Trwas 1. 46 mmolm-2 ·s-1. Compared with the photosynthetic dynamic variation of Phy llostachys edu lis, the diurnal variation of transp iration and photosynthesiswere identical in the same season; but the annual variation was difference, three-peak-curve to photosynthesis and single-peak-curve to transp iration

1. Jiangxi Provincial Key Laboratory for Bamboo Germp lasm Resources and Utilization, Jiangxi AgricultureUniversity, Nanchang　330045, Jiangxi, China

2. Chinese Academy of Forestry, Beijing　100091, China

Received Date: 2005-09-25

Abstract: Used L i-6400, the transp iration dynamic variation of Phy llostachys edulis was determined in deferent timescales. The results showed that the diurnal variation of transp iration rate ( Tr) changed with season, bimodality insummer and autumn, and single peak curve in winter and sp ring. The annual variation of transp iration followed asingle peak curve, the peak (3. 90 mmolm-2 ·s-1 ) occurred in August, the lowest was only 0. 29 mmolm-2 ·s-1in January, and the annualmean of Trwas 1. 46 mmolm-2 ·s-1. Compared with the photosynthetic dynamic variation of Phy llostachys edu lis, the diurnal variation of transp iration and photosynthesiswere identical in the same season; but the annual variation was difference, three-peak-curve to photosynthesis and single-peak-curve to transp iration

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Study on the Tran spira tion Dynam ic Var ia tion of Phyllostachys edu lis

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