MORPHO-PHYSIOLOGICAL STUDY OF DIFFERENT LOCAL AND HYV RICE VARIETIES DURING Aman SEASON

Abstract

An experiment was carried out at the research field of Sher-e-Bangla Agricultural University, Dhaka during the period from July 2017 -December 2017, to study the morpho-physiological study of different local and HYV rice varieties during aman season and to identify the important vegetative, reproductive and yield characteristics which might contribute in higher yield. Ten rice varieties were used as treatments. Among the varieties, seven were local (Buta, Dudkat, Bindipakri, Chinisagar, Sunashail, Kartik jhul and Ranjay) and three were HYV varieties (BRRI dhan51, BRRI dhan52 and BRRI dhan70). The experiment was laid out in a Randomized complete Block Design (RCBD) with four replications. Data on different growth parameters, physiological parameters and yield with yield contributing characters were recorded. The collected data were statistically analyzed for evaluation of the treatment effect. Results signified that the highest number of total tillers hill -1 , dry weight hill -1 , crop growth rate , absolute grain growth rate, flag leaf dry weight, SPAD value of flag leaf at anthesis stage and grain filling stage, number of effective tiller, number of ineffective tiller ,panicle length, number of filled grains panicle -1 , number of grains plant -1 , weight of grains plant , grain yield (3.78 t ha -1 ), straw yield (6.88 t ha -1 ), biological yield (10.66 t ha ) and harvest index (35.46%) were recorded from the variety, V (BRRI dhan51). The lowest number of effective tiller, number of filled grains panicle -1 8 , number of grains plant , grain yield (0.57 t ha -1 ), straw yield (1.83 t ha -1 ), biological yield (2.40 t ha -1 ) and lowest harvest index (23.75%) were observed from the variety, V (Dudkat). Among the local varieties V 3 2 (Bindipakri) performed better for its higher number of leaves plant -1 ,crop growth rate, absolute grain growth rate, number of effective tillers, panicle length, number of filled grains panicle -1 , number of grains plant -1 , weight of grains plant -1 (33.36) and grain yield (2.05 t ha -1 ).