Diversity of insect pollinators with reference to their impact on yield production of canola (Brassica napus L.) in Ismailia, Egypt
Diverzitet insekata oprašivača i njihov uticaj na prinos uljane repice (Brassica napus L.) u Ismailiji, Egipat
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Author
Kamel, Soliman
Mahfouz, Hatem
Blal, Abd El-Fatah H.
Said, Maysa
Mahmoud, Mahmoud
Keywords
Insect pollinatorsDiversity
Canola
Yield
Egypt
Insekti oprašivači
Diverzitet
Uljana repica
Prinos
Egipat
Metadata
Show full item recordAbstract
A study of insect pollinators and their impact on canola yield was conducted during the
2013/2014 and 2014/2015 growing seasons. The study was carried out at an experimental
farm, Faculty of Agriculture, Suez Canal University, Ismailia. The results revealed that 21 species
of insect pollinators belonging to 14 families under four orders visited canola flowers. The
abundance of Hymenoptera insects reached the maximum of 67.90%, followed by Diptera
14.97%, Coleoptera 13.61%, then Lepidoptera 2.26% as average of both seasons. In open
pollination, Colletes lacunatus had the maximum percent abundance in the two seasons
(30.45 and 29.34%, respectively) followed by Apis mellifera (12.34 and 17.73%, respectively),
compared to other bees and different pollinators. Peaks of foraging activity of both C. lacunatus
and A. mellifera were mainly observed from 1:00 to 3:00 pm and they corresponded to the
number of flowering plants. Open pollination increased the number of pods per plant, seeds
per pod, weight of 1000 seeds, yield per plant, yield per feddan (1 fed = 0.42 ha) and seed
germination, compared to non-open pollination. Ispitivani su insekti oprašivači i njihov uticaj na prinos uljane repice tokom sezona
2013/2014 i 2014/2015. Ogled je izveden na eksperimentalnom imanju Poljoprivrednog
fakultet Univerziteta Suez Canal, Ismailia. Rezultati ispitivanja pokazali su prisustvo 21 vrste
insekata oprašivača cveta uljane repice, koje spadaju u 14 familija i četiri reda. Zabeleženo je
maksimalno prisustvo insekata iz roda Hymenoptera, sa prosečnih 67.90% u obe godine, a
sledili su rodovi Diptera sa 14.97%, Coleoptera sa 13.61% i Lepidoptera sa 2.26%. U oglednoj
varijanti sa otvorenim pristupom, vrsta Colletes lacunatus je bila najprisutnija tokom dve
sezone (30.45 i 29.34%, respektivno), a zatim Apis mellifera (12.34 i 17.73%, respektivno),
u odnosu na ostale pčele i oprašivače. Najveća aktivnost prikupljanja kod vrsta C. lacunatus i
A. mellifera odvijala se u vremenskom intervalu od 13:00 do 15:00 časova i odgovarala je broju
procvetalih biljaka. Otvoreni pristup biljkama povećao je broj mahuna po biljci, broj semena
po mahuni, težinu 1000 semena, prinos po biljci, prinos po fedanu (1 fedan = 0.42 ha), kao i
klijanje semena, u poređenju sa varijantom ogleda sa biljkama u kavezima.