Journal of Applied and Natural Science 8 (1): 35-39 (2016)
Character association and path analysis in advanced breeding lines of rabi
sorghum [Sorghum bicolor (L.) Moench]
S. B. Kiran2, R. Lokesh2, Vikas, V. Kulkarni3, V. Rachappa4, L. N. Yogesh5 and
A. M. Talwar6
1*AICSIP, Agriculture Research Station, Gulbarga-585101, Karnataka, INDIA
2Department of Genetics and Plant Breeding, Agriculture College, University of Agricultural Sciences,
Raichur-584102, Karnataka, INDIA.
3Main Agriculture Research Station Raichur-584102, Karnataka, INDIA
4Department of Agricultural Entomology, Agriculture College, Gulbarga-585101,Karnataka, INDIA
5Agriculture Research Station Hagari- 583138, Karnataka, INDIA.
6Agriculture Research Station Malnoor-585215, Karnataka, INDIA.
*Corresponding author. E-mail: email@example.com
Abstract : The field experiment was carried out using advanced breeding lines of rabi sorghum to study association
among the yield and its component traits, direct and indirect effects of traits on the yield. Association studies
indicated that seed yield per plot showed significant positive correlation with traits viz., plant height (rp=+0.7243,
rg=+0.7409), ear head length (rp=+0.6002, rg=+0.6021), 100 seed weight (rp=+0.1593, rg=+0.1880), fodder yield
(rp=+0.9434, rg=+0.9476) and lodging percentage (rp=+0.5263, rg=+0.5646) at both phenotypic and genotypic level.
Genotypic correlation was higher magnitude than phenotypic correlation. Revealed increase in ear head length will
increase the seed yield. Partitioning of yield and yield components both at phenotypic and genotypic levels into
direct and indirect effects revealed that positive direct effects of ear head length (Ppi=+0.2533, Pgi=+0.5241), ear
head diameter (Ppi=+0.0669, Pgi=+0.2580), days to maturity (Ppi=+0.0338, Pgi=+0.1193), fodder yield
(Ppi=+0.6484, Pgi=+0.7461) were relatively high and followed by less lodging percentage (Ppi=+0.1751,
Pgi=+0.2263). Residual effects were Pr=0.1303 and Gr=0.0624 at phenotypic and genotypic levels. Indicating
importance of these characters and can be strategically used to improve the seed yield of sorghum.
Keywords : Correlation, Grain yield, Path analysis, Sorghum