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005 | 20211111074828.0 | ||
008 | 070604s19uu xx 00 eng d | ||
040 | _cCvSU Main Campus Library | ||
041 | 0 | _aeng | |
082 | 0 | 4 |
_a633.73 _bSa4 2003 |
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_aSamson, Charlene M. _eauthor _914118 |
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_aPollinators of three species of coffee / _cby Charlene M. Samson. |
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_aIndang, Cavite, _c2003. _bCavite State University- Main Campus, |
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_avii, 45p. : ill. ; 28 cm. _billustrations ; _c cm. |
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_2rdacontent _atext |
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_2rdamedia _aunmediated |
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_2rdacarrier _avolume |
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500 | _aThesis (Bachelor of Science in Agriculture Major in Crop Protection) Cavite State University. | ||
504 | _aIncludes bibliographical references. | ||
520 | 3 | _aSamson, Charlene M. Pollinators of Three Species of Coffee. Undergraduate Thesis. Bachelor of Science in Agriculture major in Crop Protection-Entomology. Cavite State University, Indang, Cavite. April, 2003. Adviser: Dr. Evelyn O. Singson. The study was conducted at the Crop Protection Laboratory, Department of Crop Sciences, CAFENR and at the Coffee Plantation of Cavite State University (CvSU) from April to October 2002. It aimed to determine the most abundant pollinators of the three coffee species: Coffea robusta, Coffea excelsa, and Coffea Liberica, to determine the foraging activity of the pollinators of each coffee species, and to relate the floral characteristics of the three coffee species with the morphological features of their most abundant pollinators. The major pollinators of the three coffee species were: Apis cerana, Apis dorsata, Apis mellifera, Bombus sp. and Trigoma sp. Apis cerana was the most abundant pollinator of Coffea excelsa and Coffea Liberica followed by Apis mellifera, Apis dorsata, and Bombus sp. On the other hand, Trigona sp. was the most abundant pollinator of Coffea robusta followed by Apis cerana, Apis mellifera, and Bombus sp. Apis cerana were active in the morning with peak from 0530h to 0630h in both Coffea excelsa, and Coffea Liberica, and from 0730h to 0930h in Coffea robusta. Bombus sp was the first to pollinate the three species of coffee immediately after anthesis. This was also observed with Apis dorsata, which prefer Coffea Liberica and Coffea excelsa but not Coffea robusta. The floral traits of Coffea Liberica such as wide floral diameter, and shallow and corolla with long pistil are adaptive for pollinating activities of Apis cerana which possesses shorter proboscis and smaller body size. The medium diameter and depth of corolla, longer stamen, and fewer number of stamen and petals of Coffea excelsa is also preffered by Apis cerana. The narrow diameter and depth of corolla, short stamen and greater number of stamen and petals of Coffea robusta are suitable for the short proboscis, small size and sparse pubescence of Trigona sp. | |
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_cSubmitted to the University Library _d04/01/2003 _eT-2456 |
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_aCoffee _93553 |
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_91367 _aBachelor of Science in Agriculture _xCrop Protection |
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_p80 _yClick here to view abstract and table of contents _uhttp://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=973485a38e2027750a3e4a77e3607b21 |
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