EXPLOITATION OF MALE STERILITY IN DEVELOPMENT OF F1 HYBRIDS IN CHILLI [Capsicum annum L.]
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Date
2013-11
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K.R.C. COLLEGE OF HORTICULTURE COLLEGE OF ARABHAVI (UNIVERSITY OF HORTICULTURAL SCIENCES, BAGALKOT)
Abstract
The investigation on “Exploitation of male sterility in development of F1
hybrids in chilli” was undertaken at Vegetable Science Unit of Kittur Rani
Channamma College of Horticulture, Arabhavi, Belgaum (Karnataka). Twenty four
crosses were developed by crossing three male sterile lines with each of eight testers.
Crosses were evaluated along with the parents and commercial check in randomized
block design with two replications and data was subjected to line × tester analysis.
The magnitude of heterosis over the commercial check (Garima) was very high in the
desirable direction and it ranged from -22.00 to 100.90 per cent for average fruit
weight, -2.43 to 96.90 per cent for stem girth at 60 DAT, 1.40 to 92.90 per cent for
fruit diameter, -18.80 to 86.40 per cent for number of fruits per plant, 2.90 to 82.90
per cent for number of primary branches at 45 DAT, -23.40 to 74.30 per cent for stem
girth at 45 DAT, -28.70 to 73.10 per cent for secondary branches at 90 DAT and -
16.90 to 71.80 per cent for primary branches at 60 DAT. The cross KCMS-16 x AL
exhibited maximum heterosis over the commercial check (Garima) for yield per
hectare (41.40 %) followed by KCMS-44 x PC1 (15.90 %), KCMS-31 x LCA234
(15.80%), KCMS-31 x AL (13.20 %) and KCMS-31 x UJ (12.70 %).
The crosses KCMS-16 x AL, KCMS-44 x PC1, KCMS-16 x H-31, KCMS-31
x LCA234 and KCMS-44 x BDB were identified as the good specific combiners for
green fruit yield per hectare in order of merit. Among parents, KCMS-44, AL, VN-2
and LCA-234 exhibited significant general combining effects for yield per hectare
and also good general combiners for overall traits studied. Hence these parents can be
used as testers in future breeding programme. Non additive gene action was observed
for traits like average fruit weight, number of secondary branches, number of primary
branches, plant height, green fruit yield per hectare, ascorbic acid content, fruit length,
days to first flowering and stem girth and hence these traits can be improved through
recurrent selection for specific combining ability or heterosis breeding.
Description
TH479
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