Vol. 5 (4) : July-August 2014 issue
Green Farming Vol. 5 (4) : 538-542 ; July-August, 2014
Cytoplamic male sterility mediated combining ability studies for purple blotch disease, yield and quality components in onion (Allium cepa L.)
AMBRESHa1*, R. VEERE GOWDAb2, ANAND NARASANNAVARa3 and S.I. MADAWALa4
aDeptt. of Vegetable Sciences, University of Horticultural Sciences, Arabhavi, Bagalkot - 587 103 (Karnataka)
bDivision of Vegetable Crops, Indian Institute of Horticultural Research, Bangalore - 560 089 (Karnataka)
Designation : 1,3,4Ph.D. Scholar *(ambrish465@gmail.com), 2Principle Scientist
Subject : Vegetable Sciences
Paper No. : P-1400
Total Pages : 5
Received : 24 January 2014
Revised accepted : 08 July 2014
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Citation :
AMBRESH, R. VEERE GOWDA, ANAND NARASANNAVAR and S.I. MADAWAL. 2014. Cytoplamic male sterility mediated combining ability studies for purple blotch disease, yield and quality components in onion (Allium cepa L.). Green Farming Vol. 5 (4) : 538-542 ; July-August, 2014
ABSTRACT
Combining ability analysis for purple blotch disease, yield and yield components in onion revealed that the lines PBRMS-318 (L2) and PBRMS-319 (L3); testers (PBRMC-285) T2 (PBRG-338) T4 and (PBRG-339) T5 were good general combiners for most of the traits studied in this perspective they could be exploited further in different breeding programmes. Among the crosses, L2 x T4 were good specific combiner for equatorial bulb diameter, number of rings per bulbs, total and marketable bulb yield per hectare, and bulb dry weight. Cross L3 x T5 were good specific combiners for purple blotch disease resistant, days to maturity, total and marketable bulb yield per hectare. These crosses can be further subjected for commercial exploitation of hybrids and selection to isolate desirable genotype for higher yield coupled with purple blotch disease resistant in onion.
Key words :
Bulb yield, GCA & SCA, Heterosis, Hybrids, Onion, Purple blotch disease.
