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Acta Agron Sin ›› 1988, Vol. 14 ›› Issue (04): 296-302.

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STUDY ON THE CAUSES FOR PHOTOSYNTHETIC DECREASE OF WHEAT AT THE MIDDAY——Ⅲ. Analysis of the Formation and Effect of Midday Nap in wheat by Ecological and Physiological Factors

Han Fengshang Zhao Ming Zhao Shongshan Wang Meiyun   

  1. Zhang Jiakou Agricultural School
  • Received:1987-12-23 Revised:1988-05-12 Online:1988-11-12 Published:1988-11-12

Abstract: 1.Under the control condition:constant optimum temperature(24℃)and CO_2 concentration(289 ppm),steady water potcntial andmagnitude of soluble carbohydrate,the decrease of photosynthesis atmidday was subdued at the begining.Decrease of CO_2 concentration andweaken of water potential going along with

Key words: Wheat, Photosynthesis, Middaynap, CO_2 concentration, Water potential, Accumulation of soluble carbohydrate

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