Impact of Genotype, Planting Date, Plant Density and Inflorescence Type on Bee Abundance and Seed Production in Broccoli | ||||
| Journal of Applied Plant Protection | ||||
| Article 5, Volume 5, Issue 1, December 2016, Page 39-45 PDF (859.15 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/japp.2016.7589 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Soliman Kamel1; Khalid Abd El-Hamed2; Kariman Mohamed* 1; Manal Masoud1 | ||||
| 1Department of Plant Protection, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt | ||||
| 2Department of Horticulture, Faculty of Agriculture, Suez Canal University, Ismailia, Egypt | ||||
| Abstract | ||||
| Field experiment was conducted in 2011-2012 to study the impact of genotype, planting date, and inflorescence type on bee abundance and seed production of broccoli in Ismailia Governorate. The abundance of two selected bee species, Apis mellifera L. and Colletes lacunatus Dours was estimated on two cultivars of broccoli, Sultan and Marathon in two different planting dates and two types of inflorescences (primary and secondary). Results indicated that both A. mellifera and C. lacunatus significantly increased the pollination percentage. Bee abundance was significantly at the maximum level at 11.00 am-1.00 pm, all over the weeks of observation, followed by the previous time of observation, at 9.00-11.00 am, then decreased significantly at 1.00-3.00 pm to reach the lowest abundance 3.00- 5.00 pm. Also, results indicated that C. lacunatus was the dominant pollinator and had more intensity visitation than A. mellifera on the both cultivars. Generally, Marathon tends to give more fruit number and weight and accordingly more seeds of light weight. On the other hand, Sultan has a tendency to give less seed number of heavier weight. The primary inflorescence gave less number of flowers and consequently less number of fruits than secondary inflorescence, but those fewer fruits gave less number of seeds with heavier weight. The effect of planting density on seed production was due to differences in number and destination of transported pollen grains. Planting date showed a profound influence on the potential of seed yield. This study demonstrated that bee pollination could significantly improve both the yield and the quality of seeds in broccoli under Ismailia conditions. | ||||
| Keywords | ||||
| Broccoli; pollination; Seed production; bee abundance | ||||
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