Vol. 5 (3) : May-June 2014 issue
Green Farming Vol. 5 (3) : 329-332 ; May-June, 2014
Correlation and path analysis for late leafspot resistance, yield and yield components in groundnut (Arachis hypogaea L.)
P. SRIVALLI1*, M. REDDI SEKHAR2, K.H.P. REDDY3, N.P. ESWARA REDDY4 and S. RAJEEV5
Dept. of Genetics and Plant Breeding, S.V. Agricultural College, Tirupati - 517 502 (Andhra Pradesh)
Designation : 1,5Ph.D. Scholar *(srivalli.pothula@gmail.com), 2Assoc. Professor, 3Professor, 4Associate Dean
Subject : Crop Genetics and Plant Breeding
Paper No. : P-1221
Total Pages : 4
Received : 08 September 2013
Revised accepted : 08 May 2014
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Citation :
P. SRIVALLI, M. REDDI SEKHAR, K.H.P. REDDY, N.P. ESWARA REDDY and S. RAJEEV. 2014. Correlation and path analysis for late leafspot resistance, yield and yield components in groundnut (Arachis hypogaea L.). Green Farming Vol. 5 (3) : 329-332 ; May-June, 2014.
ABSTRACT
Correlation and path co-efficient analysis were carried out for late leafspot, pod yield and its component characters in fifteen F1 crosses along with eight parents (five lines and three testers) of groundnut during kharif, 2011. The genotypic correlation co-efficients were found to be of relatively higher magnitude than the corresponding phenotypic correlation co-efficients, indicating strong inherent association between the characters. The pod yield per plant showed significant and positive correlation with number of primary branches per plant, days to 50 per cent flowering, number of mature pods per plant, kernel yield per plant, percent pod set and harvest index both at genotypic and phenotypic levels, while it has recorded significant and positive association with late leafspot score at 90 days after sowing at genotypic level only. The path co-efficient studies indicated that number of mature pods per plant had the highest positive direct effect on pod yield followed by kernel yield per plant and harvest index while per cent pod set exerted the maximum negative direct effect on pod yield.
Key words :
Correlation, Groundnut, Late leafspot resistance, Path analysis,