000 03311nam a2200289 a 4500
003 OSt
005 20211111074828.0
008 070604s19uu xx 00 eng d
040 _cCvSU Main Campus Library
041 0 _aeng
082 0 4 _a633.73
_bSa4 2003
100 0 _aSamson, Charlene M.
_eauthor
_914118
245 1 0 _aPollinators of three species of coffee /
_cby Charlene M. Samson.
260 0 _aIndang, Cavite,
_c2003.
_bCavite State University- Main Campus,
300 _avii, 45p. : ill. ; 28 cm.
_billustrations ;
_c cm.
336 _2rdacontent
_atext
337 _2rdamedia
_aunmediated
338 _2rdacarrier
_avolume
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.
541 _cSubmitted to the University Library
_d04/01/2003
_eT-2456
650 0 _aCoffee
_93553
690 _91367
_aBachelor of Science in Agriculture
_xCrop Protection
856 _p80
_yClick here to view abstract and table of contents
_uhttp://library.cvsu.edu.ph/cgi-bin/koha/opac-retrieve-file.pl?id=973485a38e2027750a3e4a77e3607b21
942 _2ddc
_cMAN
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