The Efect of Inhibited Ph0t0respirati0n on Photoinh ibition in ‘CabernetSauvignon’(Vinefera L．CV．)under Drought Stress

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (4): 433-436.

• 研究论文 • Previous Articles Next Articles

The Efect of Inhibited Ph0t0respirati0n on Photoinh ibition in ‘CabernetSauvignon’(Vinefera L．CV．)under Drought Stress

Guan Xueqiang；Zhao Shijie；Li Dequan；and Shu Huairui

( College ofHorticulture，ShandongAgricultural University，Tai'an 271018，China； College ofL Science，ShandongAgricultural University，Tai'an 271018，China； Shandong Vine and Wine—Making， e，Ji'nan 250100，China)

Received:2003-11-27 Revised:2004-05-21 Online:2004-08-25 Published:2004-08-25

Abstract

Abstract: Using two—year·old potted ‘Cabernet Sauvignon’(Vitls vinifera L．CV．)as materials，maxi—mal(Fv／Fm)and actual( PSII)photochemical eficiency of photosystem II(PSII)，net assimilation rate (Pn)were measured by combined measurements of gas exchange and chlorophyll fluorescence parameters after
a 20 days slight，moderate and severe drought level of soil and succeeding three days INH·spraying treatment．Total electron transport rate(JT)，electron transport flows used in carboxylation(Jc)and oxygenation(J0) reaction catMyzed by Rubisco，and photorespiration rate(Pr)were calculated．Serious photoinhibition can be avoided by effective photoprotection mechanism in ‘Cabernet Sauvignon’，while photoinhibition aggravated when the leaves were sprayed with INH，a inhibitor of photorespiration，which suggests that photorespiraion plays an important role in photoprotection mechanism of ‘Cabernet Sauvignon’under drought stress．

Key words: Vitis vinifera L．, Drought stress, Photorespiration, Photoinhibition, Photosynthesi

CLC Number:

S 663
Q 945

Guan Xueqiang;Zhao Shijie;Li Dequan;and Shu Huairui. The Efect of Inhibited Ph0t0respirati0n on Photoinh ibition in ‘CabernetSauvignon’(Vinefera L．CV．)under Drought Stress[J]. ACTA HORTICULTURAE SINICA, 2004, 31(4): 433-436.

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The Efect of Inhibited Ph0t0respirati0n on Photoinh ibition in ‘CabernetSauvignon’(Vinefera L．CV．)under Drought Stress

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