Insect pollinators diversity with special reference to role of attractants in insect pollination for increasing the productivity of Bottle gourd (Lagenaria siceraria L.)
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Date
2012-07-10
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University of Agricultural Sciences GKVK, Bangalore
Abstract
Insect pollinators diversity with special reference to role of
attractants in insect pollination for increasing the productivity of Bottle
gourd (Lagenaria siceraria L.) was carried out during 2012 at Division of
Horticulture, University of Agricultural sciences, GKVK, Bangalore.
Ten species of insect pollinators were recorded during flowering
before application of attractants. Whereas nineteen species of insect
pollinators were recorded during flowering after application of Citral-a
and Citral-b. Among them, eight species were belong to order
Hymenoptera, five species to Diptera, three species to Lepidoptera and
two species to Coleoptera and one species from Hemiptera. The
abundance of A. dorsata was constituted 23.28 per cent, whereas other
pollinators were constituted 76.70 per cent. The quantity of nectar and
sugar concentration was more in female flowers (43.70 μl and 48.60 %)
than in male flowers (28.60 μl and 27.40 %). Open pollination with
Citral-a and Citral-b was attracting more number of pollinators up to
third day of spraying particularly dipterans. After The role of attractant
in pollination on quantitative and qualitative parameters such as fruit
set, fruit weight, fruit volume, fruit length, number of sound seeds, test
weight, moisture, ash content, TSS and germination percentage were
maximum in open pollinated plot with Citral-a. However, there was no
fruit set in control may be due to absence of insect pollinators.
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