PERFORMANCE OF SOME SELECTED HYBRID RICE VARIETIES IN AUS SEASON

Abstract

The experiment was conducted at the experimental farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during March to August (Aus season), 2013 to study the performance of some selected hybrid rice varieties namely BRRI hybrid dhan1, BRRI hybrid dhan2, ACI hybrid2, Jagoron and Panna1. Inbred BRRI dhan48 was used as check variety. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Growth characters, yield and yield attributes were significantly different among the studied varieties. All the studied hybrid varieties exhibited superiority in respect of growth characters viz. plant height, tillers hill-1, stem dry matter hill-1, leaf dry matter hill-1, total dry matter hill-1, leaf area index (LAI) over the inbred BRRI dhan48, Flag leaf chlorophyll content and chlorophyll a:b ratio, and light interception (%) were higher in all the hybrid rice varieties compared to the inbred. ACI hybrid2, Jagoron and Panna1 showed better performance in yield related characters viz. effective tillers hill-1, spikelets fertility (%) and 1000-grain weight over the rest test varieties. Consequently, these three hybrid varieties produced the considerable higher grain yield compared to BRRI dhan48 ( 2.51 t ha-1). Higher grain yield of these varieties was related with their higher dry matter production.Among the hybrid rice varieties, ACI hybrid 2 provided the highest grain yield (3.05 t ha-1) which was closly followed by Jagoron (2.97 t ha-1) and Panna1 (2.82 t ha-1).