Senescence behavior of the whole plant in four rice cultivars

Abstract

A non-sequential mode of senescence pattern (determined on the basis of decline of chlorophyll and protein) in the Ratna cultivar and a sequential mode of senescence in the Pusa, Masuri and Kalojira cultivars were observed in intact rice plant. When the panicles were removed from the plant, a delayed senescence compared with the intact control plants was observed. Again, when both panicle and daughter shoots were removed from the plant, leaf senescence of the mother plant was further delayed. The senescence behavior of the newly-developed daughter shoot was identical with that of the mother plant.