TILLERING PATTERN, LEAF CHARACTERISTICS AND YIELD OF TEN MODERN RICE VARIETIES IN AMAN SEASON

Abstract

The study was conducted at the experimental farm of Sher-e-Bangla Agricultural University (SAU), Sher-e-Bangla Nagar. Dhaka-1207 during the period from June 2018 to December 2018 to have a comparative study on ten modern rice varieties in Aman season in relation to their growth behaviour, leaf chlorophyll content and yield. The experiment consisted of 10 Aman rice genotypes (BRRI hybrid 4, BRRI dhan32, BRRI dhan33, BRRI dhan39, BRRI dhan49, BRRI dhan52, BRRI dhan54, BRRI dhan56, BRRI dhan57, BRRI dhan62). The experimental plots were laid out in randomized complete block design (RCBD). The field was divided into three blocks; representing three replications. Row to row and plant to plant distances were 25cm and 20cm respectively. Ten (10) genotypes were distributed to each plot of 4 m x 2.5 m size within each block randomly. The highest no. of filled grain per hill was obtained from the variety BRRI dhan56 and the lowest no. of filled grain per hill from BRRI dhan49. The highest no. of unfilled grain per hill was obtained from the variety BRRI dhan52 and the lowest no. of unfilled grain per hill from BRRI dhan49. The highest 1000 seed weight per hill was obtained from the variety BRRI hybrid 4 (28.16 g) which is statistically similar with BRRI hybrid 4 and the lowest 1000 seed weight per hill from BRRI dhan54. The highest grain yield per hill was obtained from the variety BRRI dhan33 (52.93 g) and the lowest grain yield per hill from BRRI dhan56 (29.9 g). The highest no. of unfilled grain per hill was obtained from the variety BRRI dhan54 (30.4 g) and the lowest no. of unfilled grain per hill from BRRI dhan57 (18.5 g). The highest biological yield per hill was obtained from the variety BRRI dhan32 (94.1 g). So, the variety BRRI dhan33 was better for higher yield and quality among the test modern Aman rice varieties.