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Nahid Niari Khamssi and Abdollah Najaphy Comparison of Photosynthetic Components of Wheat Genotypes Under Rain-fed and Irrigated Conditions Photochemistry and Photobiology 88

Version of Record online: 31 OCT 2011 | DOI: 10.1111/j.1751-1097.2011.01008.x

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Fourteen wheat genotypes were grown under two environments (irrigated and rain fed). The environment was a significant source of variation for leaf chlorophyll content (LCC), stomatal conductance (gs) and grain yield (GY). Wheat genotypes differed significantly for LCC, gs and GY. All the measured traits under water-stress conditions except maximum photochemical efficiency of PSII (Fv/Fm) were lower than those under nonstress conditions. Mean GY in rain-fed conditions was 11.26% lower than that in irrigated conditions. It was concluded that the higher LCC and gs under drought-stress conditions could possibly be the proper criteria for screening the drought-tolerant wheat genotypes under field conditions.

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