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1 World News of Natural Sciences

1 2023

1 Pati C. K.

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Retention of leaf senescence of aquatic angiosperms using IAA

100%

Pati C. K.

tom 48

40-45

One of the plant growth promoters, IAA (Indole-3-acetic acid) on deferral of leaf senescence was analysed for plant species namely, Salvinia sp. and Jussiaea sp. Changes of some biochemical parameters like chlorophyll, protein, soluble and insoluble carbohydrates as well as activity of catalase enzyme were analysed as reliable senescence indices during detached leaf senescence. With the progress of ageing duration from zero to 48 hours the levels of chlorophyll and proteins in leaf discs gradually declined in both control and IAA treated samples. However, in the hormone treated samples the rate of decline was found to be much slower. Concomitantly the level of insoluble carbohydrate started declining right from 12, 24 and 48 hours of observation period both in control and IAA treated samples.