STUDY ON GAS EXCHANGE IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER MOISTURE STRESS CONDITIONS

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ROUHI EBRAHIM; SIOSEH MARDEH A.

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Journal: Seed and Plant Year:2008 | Volume:24 | Issue:1 Page(s): 45-62

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Information Journal Paper

Title

STUDY ON GAS EXCHANGE IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER MOISTURE STRESS CONDITIONS

Author(s)

ROUHI EBRAHIM | SIOSEH MARDEH A. | Issue Writer Certificate

Keywords

RAINFED WHEATQ3

GAS EXCHANGESQ2

LEAF SURFACEQ1

Abstract

Investigation of stomatal and nonstomatal parameters limiting photosynthesis (pn) under water stress condition may provide information to understand physiological bases of drought resistance. To investigation of the leaf gas exchange in different advances and old wheat genotypes, a filed experiment was carried out during 2003-04 growing season, at Ghamloo Research Station in Kurdistan province. A split plot designe with two main plots (rainfed and irrigation), and 20 lines and cultivars of rainfed bread wheat (19 advance lines with Sardari as a check)as sub plots with three replications was applied. Using IRGA device and leaf area meter, gas parameters (internal CO2 concentration, stomatal conductance, photosynthesis rate, transpiration, water use effeciency and mesophyl conductance) and LEAF SURFACE in both dryland and irrigation plots were measured. According to stress susceptiblity index (SSI), genotypes were divided into three groups of resistant, intermediate and susceptible. Except water use effeciency all parameters were reduced under dryland conditions, but this reduction was less in resistant lines than in susceptible ones. For example Pn reduction in susceptible group was 60% while in resistant group was 11%. Under dryland conditions, reduction in mesophile conductance was higher than stomatal conductance (20% more than stomatal conductance). It was concluded that decrease of Pn under dryland was mainly due to reduced mesophyl conductance (nonstomatal factor) rather than stomatal factors.

Cites

EFFECTS OF DROUGHT STRESS AND ZINC APPLICATION ON GRAIN YIELD AND SOMEPHYSIOLOGICAL CHARACTERISTICS OF SOYBEAN (GLYCINE MAX L.) CULTIVAR OF WILLIAMS

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APA: Copy

ROUHI, EBRAHIM, & SIOSEH MARDEH, A.. (2008). STUDY ON GAS EXCHANGE IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER MOISTURE STRESS CONDITIONS. SEED AND PLANT, 24(1), 45-62. SID. https://sid.ir/paper/20397/en

Vancouver: Copy

ROUHI EBRAHIM, SIOSEH MARDEH A.. STUDY ON GAS EXCHANGE IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER MOISTURE STRESS CONDITIONS. SEED AND PLANT[Internet]. 2008;24(1):45-62. Available from: https://sid.ir/paper/20397/en

IEEE: Copy

EBRAHIM ROUHI, and A. SIOSEH MARDEH, “STUDY ON GAS EXCHANGE IN DIFFERENT WHEAT (TRITICUM AESTIVUM L.) GENOTYPES UNDER MOISTURE STRESS CONDITIONS,” SEED AND PLANT, vol. 24, no. 1, pp. 45–62, 2008, [Online]. Available: https://sid.ir/paper/20397/en

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