?PHOTOSYNTHETIC EFFICIENCY OF WHEAT UNDER WATER STRESS CONDITIONS

Authors

  • Muhammad Yasin Ashraf Nuclear Institute for Agriculture and Biology (NIAB), Jhang Road, POBox No 128, Faisalabad-38000, Pakistan. ?Atomic Energy Agricultural Research Centre, Tando Jam-70060 (Sindh), Pakistan.

Keywords:

Wheat, Photosynthetic efficiency, Water stress.

Abstract

An experiment was conducted in cemented tanks with four wheat genotypes: two were tolerant (Chakwal-86 and
AZS-4) and two susceptible (Pavon and AZS-17) to water stress. The parameters estimated were the photosynthetic
efficiency andnitrogenmetabolismofthegentoypes. Measurementsweremadeofaccumulation ofdrymatter,transpi-
ration, leafdiffusive resistance, leaf area,nitratereductase activity (NRA) and total amino acids. Results showed that
leafarea,transpiration, drymatteraccumulationandNRAwerereducedwhiIeleafdiffusive resistanceandtotalamino
acids increased in all the genotypes under all stress treatments. The relationship between yield and leaf area,
transpiration, dry matter accumulation andNRA waspositive. The genotypes Chakwal-86 and AZS-4 showed betier
performance than theothers.

Published

1998-06-22

How to Cite

Ashraf, M. Y. (1998). ?PHOTOSYNTHETIC EFFICIENCY OF WHEAT UNDER WATER STRESS CONDITIONS. Biological Sciences - PJSIR, 41(3), 156–163. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/2260

Issue

Vol. 41 No. 3 (1998): Pakistan Journal of Scientific and Industrial Research

Section

Articles