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Growth and photosynthetic characteristics of lucerne (Medicago sativa L.) genotypes as influenced by salinity of irrigation water



Growth and photosynthetic characteristics of lucerne (Medicago sativa L.) genotypes as influenced by salinity of irrigation water



Indian Journal of Plant Physiology 6(2): 158-161



Lucerne RL 88, T 9 and Anand 2 were irrigated with four levels of saline water (0.8, 4.0, 8.0, 12.0 dS/m) and the effects on growth and photosynthetic efficiency were examined. Leaf photosynthesis rate (Pn) was maintained in Anand 2, but declined in RL 88 at higher salinity levels. T 9 showed an increase in Pn at 4 dS/m. The reduction in Pn at higher salinity levels was the result of increased stomatal resistance and thereby low intercellular CO2 concentration.

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