Nature and magnitude of heterosis was studied for ten quantitative characters in a line x
tester mating design in desi cotton. The values of average heterosis recorded for days to
flower initiation, bolls/plant, seed-cotton yield/plant, seed yield/plant, and lint yield/plant
were 3.6,22.1,21.2,21.7 and 20.3%, respectively. Twenty six cross combinations outyielded
significantly the best parent RG-I0. Heterosis for seed-cotton yield was related mainly to
number of bolls, seed yield and lint yield and to some extent on lateness and tallness.
Crosses involving G-121, K-7, Shyamali, G-27, RG-I0, SO-5, BH-113, BH-112, BH-99,BH-98,
RG-8 and Lohit are expected to be more effective for exploitation of genetic variability for
yield and its components. For halo length, ginning percentage and seed and lint indices FIS
exhibited least deviation from better parent,suggesting that these characters were governed
by additive genes.
Keywords: Heterosis, dcsi cotton, environment
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
S. K. TOMAR AND S. P. SINGH info_circle