Vol. 5 (2) : March-April 2014 issue
Green Farming Vol. 5 (2) : 172-176 ; March-April, 2014
Heterosis 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 (ANGRAU), Tirupati - 517 502 (Andhra Pradesh)
Designation : 1,5Ph.D. Scholar *(srivalli.pothula@gmail.com), 2Associate Professor, 3Professor, 4Associate Dean
Subject : Crop Genetics and Plant Breeding
Paper No. : P-1111
Total Pages : 5
Received : 08 September 2013
Revised accepted : 20 February 2014
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Citation :
P. SRIVALLI, M. REDDI SEKHAR, K.H.P. REDDY, N.P. ESWARA REDDY and S. RAJEEV. 2014. Heterosis for late leafspot resistance, yield and yield components in groundnut (Arachis hypogaea L.). Green Farming Vol. 5 (2) : 172-176 ; March-April, 2014
ABSTRACT
Fifteen F1 crosses along with eight parents (five lines and three testers) were evaluated during kharif, 2011 to study heterosis for late leafspot resistance, yield and yield components in groundnut. Manifestation of heterosis was of higher order for number of secondary branches per plant, number of leaves at harvest, number of mature pods per plat, plant height and harvest index for realization of heterosis for pod yield. The maximum heterosis over better parent for pod yield per plant was observed to be 72.39 % and that of best pure line and mid parent was found to be 44.18 % and 98.64 % respectively. Six potential heterotic cross combinations viz., TG-47 x ICG-15234, ICGV-91114 x ICG-15234, TPT-4 x ICG-15234, TCGS-913 x GPBD-4, TCGS-888 x ICG-13919 and TCGS-888 x GPBD-4 were identified as promising for pod yield and late leafspot resistance characters.
Key words :
Arachis hypogaea, Groundnut, Heterosis, Late leafspot resistance.
