Insect pollination in pechay Brassica chinensis L. and radish Raphanus sativus L. [Philippines]
1989
Cervancia, C.R. | Forbes, M.F.
Insect pollination in pechay Brassica chinensis L. and radish Raphanus sativus L. were studied in Nagcarlan, Laguna [Philippines]. Two colonies of honey bee Apis mellifera L. were introduced to the experimental area to increase pollination. There was a significant increase in the percent fruit set in insect pollinated pechay and radish flowers. Fruit set in unbagged (open) pechay inflorescence was 37.2% while 4.7% was obtained from bagged inflorescence. The number and weight of seeds per pod were likewise higher in unbagged inflorescence, however, the size of the pods and percent germinations did not vary in the two treatments. In radish, the fruit set in unbagged and bagged inflorescence were 27.5% and 13.1%, respectively. There were no significant difference in the length of pods, number of weight of seeds per pod and percentage germination in both treatments. Aside from the introduced A. mellifera F. the commonly observed pollinators were A. indica F., A. florea F., A. dorsata F., and Xylocopa sp.
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