The importance of single floral visit of Chalicodoma cincta cincta Fabricius 1871 (Hymenoptera : Megachilidae) in the pollination and yield of Vigna unguiculata (L.) Walp. 1843 (Fabaceae) in Cameroon. IJAAR

Vigna unguiculata,Joseph Blaise Pando, Fernand-Nestor Tchuenguem Fohouo, Denis Djonwangwe1 and Joseph Lebel Tamesse

Laboratory of Zoology, University of Maroua, Higher Teachers’ Training College, P.O. Box 55 Maroua, Cameroon.

Laboratory of Zoology, University of Ngaoundéré, Faculty of Science, P.O. Box 454 Ngaoundéré, Cameroon

Laboratory of Zoology, University of Yaoundé I, Higher Teachers’ Training College, P.O. Box 47 Yaoundé I, Cameroon

Key words: Vigna unguiculata, flowers, Chalicodoma cincta cincta, pollination, yields.

Abstract

Experiments were made in Yaoundé to determine the effects of a Chalicodoma cincta cincta Fabricius 1871 visit on the pollination and the productivity of cowpea, Vigna unguiculata (L.) Walp. 1843. Two treatments for each experiment were used on 40 randomly-selected plants each. These included Autonomous Self-Pollination (ASP) with flowers from which insects visit, with airborne pollen flow excluded (treatments 1 and 3), flowers that received a single bee visit (SBV) of C. cincta cincta (treatments 2 and 4). Vigna unguiculataThis wild bee mainly foraged for nectar and pollen resources. The mean foraging speed was 10.82 flowers/min and the duration of visits was 13.35 sec to collect nectar and pollen. All flowers produced pod with or without insect visits. Chalicodoma cincta cincta was effective pollinator, and of course their visits increased pod production (fruiting rate), number of seeds (number of seeds/pod) and normal seed (percentage of normal seed). Chalicodoma cincta cincta foraging resulted in a significant increment of the fruiting rate by 31.98 %, as well as the number of seeds/pod by 30.76 % and the percentage of normal seeds by 15.27 % in Yaoundé-Cameroon. Conservation of C. cincta cincta nests close to V. unguiculata fields could be recommended to increase pod and seed production in the region.

ijaar-v4no4-p179-187Get the original articles in Source: Volume 4, Number 4, April 2014 – IJAAR

Journal Name: International Journal of Agronomy and Agricultural Research (IJAAR)

Published By: International Network for Natural Sciences

Related Post: The micropropagation of the strawberry cultivar ‘Idea’ – IJAAR

Download PDF

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s