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International Journal of Horticulture 2014, Vol.4, No.8, 40
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positive stranded heterosis for dry fruit yield per plant
over check variety Byadagi dabbi. Whereas cross
Co-1×Byadagi dabbi expressed the highest standard
heterosis for dry fruit yield per plant and fruit weight.
The cross GPC-82×Singanahalli local showed
consistent heterotic effect over mid-parent, better
parent and standard check with 95.56%, 91.30% and
33.33% respectively. The crosses 124×KDC-1 and
Punjab lal×KDC-1 recorded the highest heterotic
effects for number of secondary branches and number
of fruits per plant over standard check Byadagi dabbi
respectively. For fruit length significant economic
heterosis was observed with 24 crosses, of which only
eight crosses had positive magnitude, which may be
due to presence of non-allelic gene effects. The cross
G-3×VN-2 showed highest fruit diameter (8.29 %)
over standard check. Positive heterosis for fruit
diameter was also reported by Anandanayaki and
Natarajan (2000) and Nandadevi and Hosmani (2003).
In the present investigation considerable amount of
heterosis was observed in desired direction for all the
characters studied. Only eight of 72 hybrids exhibited
significant positive heterosis of more then 30%. The
combinations Co-1×Byadagi dabbi (49.09%),
Co-1×Lokur local (40.97%), G-3×Lokur local
(39.32%), Co-1×KDC-1 (36.10%), G-4×Byadagi
dabbi (34.19%) and Kunkur-3×Byadagi dabbi
(32.66%) were identified as the best hybrids, as they
have recorded highest heterosis over standard check
Byadagi dabbi for dry fruit yield per plant along with
yield contributing characters viz., number of
secondary branches, number of fruits per plant, fruit
length, fruit weight and pericarp weight.
Material and Methods
An experiment was conducted at Water and Land
Management Institute (WALMI), University of
Agricultural Sciences, Dharwad during summer 2005.
The experimental material consisted of 12 lines viz.,
GPC-82, S-32, 124, AR-75, Puri red, Punjab lal,
DKC-8, Pant C-1, Co-1, G-3, G-4 and Kunkur-3 and
six testers viz., Byadagi dabbi, Byadagi kaddi,
Singanahalli local, Lokur local, KDC-1 and VN-2.
These parents were crossed in Line×tester design to
produce 72 hybrids. All the 72 hybrids along with
parents and standard check (Byadagi dabbi) were
sown on February 2005 and planted on April 2005
with two rows of ten plants each in Randomized
Block Design. Observations were recorded on days to
50 per cent flowering, plant height, number of primary
branches, number of secondary branches, number of
fruits per plant, fruit length, fruit diameter, stalk length,
stalk weight, fruit weight, pericarp weight, number of
seeds per fruit, seed weight and dry fruit yield per
plant. The mean over two replications for all hybrids
and parents for each of the trait was calculated over
mid-parent, better parent and standard check and used
in the estimation of heterosis as per the standard
procedure given by Turner (1953) and Fonesca and
Patterson (1968) respectively.
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