STUDY ON THE YIELD AND YIELD CONTRIBUTING CHARACTERS OF COTTON (Gossypium hirsutum)

Abstract

A field experiment was conducted in Randomized Complete Block Design (RCBD) with three replications in the experimental field of Department of Genetics and Plant Breeding, Hajee Mohammad Danesh Science and Technology University, Dinajpur, Bangladesh during July 2013 to March 2014 to study the yield and yield contributing characters of 20 cotton inbred lines Tj....T29 . Different yield and yield contributing characters such as number of vegetative branch, number of primary fruiting branch, number of secondary fruiting branch, node number of fruiting branch days to 50% flowering, days to 50% ball splitting. ball number per plant, plant height, ball weight and yield were studied.The number of vegetative branch was significantly varied from 3.633 to 4.5. Among the lines the maximum number of vegetative branch (4.5) was recorded in Tg line and the minimum number of vegetative branch (3.633) was recorded in T; line. The maximum number of primary fruiting branch number (13.63) was recorded in T,3 and Ty line and the minimum number (11,03) was in T, line. The maximum number of secondary branch numbers (12.37) were in T)7 line and the minimum secondary branch number (9.3) were recorded in Tj line. The highest number of node for fruiting branch (7.37) found in T29 line and the lowest number of node of fruiting branch (5.12) found in T; line. Days to ball splitting were significantly different ranging from 101.3 to 118.1 days. The number of days required for ball splitting is significantly varied ranging from 45.87 to 57.10 days. The highest balls per plant (25.23) was found in T)2 line followed by Tis and Tj» line ( 24.9 and 26.83) respectively and the lowest balls per plant (18.00) was found in T, line followed by T, inbred lines (19.33) respectively. The ball weight was significantly varied from 4.333 to 6.35 g. The seed cotton yield was significantly varied from 1812 to 2977 kg/ha. The highest seed cotton yield (2977) found in T19 line and the lowest seed cotton yield (1812) in T, line.