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Abstract Detail



Systematics

Abdul, Suleiman [1], Sawa, Fatima B.J. [2], Zhigila, Daniel Andrawus [3], Chidibere, Chukwu [4].

Interspecific Comparisons using phenotypic features among varieties of onions (Allium cepa L.) in Nigeria.

Ef├»┬Čücient utilization of plant genetic resources for nutrition and crop improvement requires systematic understanding of the important traits. Onion varieties are distributed worldwide with an interesting diversity of varieties whose leaves and bulbs are consumed. Despite the potential of onion to enhance food security and economic livelihoods, information about its phenotypic features by farmers in sub-Saharan Africa is scanty. A field experiment was conducted at the Research Farm of Federal College of Horticulture Dadin Kowa, Gombe State, Nigeria to compare the phenotypic features and the performance of eight onion varieties namely Ex-Dutsi,Ex-Gombe, Ex-Huguma, Ex-Kudan, Ex-Kura, Ex-Kwadon, Ex-Romi and Wuyan Bijimi under field conditions. The experiment was conducted using a randomized complete block design with five replications. Results obtained showed that onion varieties were significantly different for both qualitative and quantitative morphological characters. Variety ‘Wuyan bijimi’ recorded the highest leaf index (63.61±5.48 %), while variety Éx-Kwadon’ had the lowest leaf index (44.74±5.46 %). Ex-Gombe recorded the largest pseudostem diameter (4.76±0.74cm) and number of leaves (8.71±0.02), plant height (77.45±3.45 cm), in addition to the greatest yields (86.56Kg/5m2) compared to ‘Ex-Romi’ with 31.57Kg/5m2 which were significantly (p≤0.05) reduced. There was no significant difference recorded in the bulb polar length, peduncle length, number of anther and leaf dry weight among the varieties. Multivariate analysis of the phenotypic characters showed the ├»┬Čürst three principal components contributing 61.53% of observed variability, while cluster analysis yielded two groups (Ex-Gombe, Ex-Kura, Ex-Romi and Wuyan bijimi in cluster 1 while Ex-Dutsi, Ex-Huguma, Ex-Kudan and Ex-Kwadon formed cluster 2) at 74.7% similarity coef├»┬Čücient. Varieties in the different clusters as obtained can be exploited for desired nutritional traits.


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1 - Abubakar Tafawa Balewa University, Biological Sciences Dept, PMB 0248, Bauchi, 74005, Nigeria
2 - Federal College of Hoticulture, Admininstration, Dadin Kowa, PMB 108, Gombe, Gombe, +234, Nigeria
3 - Gombe State University, Biological Sciences, Tudun Wada, PMB 127 , Gombe, Gombe, +234, Nigeria
4 - Federal College of Hoticulture, Horticulture and Landscaping Technology, Pmb 108, Dadin Kowa, Gombe, Gombe, +234, Nigeria

Keywords:
Systematics
diversity
Characterisation
Onion
Gombe State.

Presentation Type: Oral Paper
Session: 20, Basal Dicots/Monocots part A (Asparagales)
Location: 200/Savannah International Trade and Convention Center
Date: Tuesday, August 2nd, 2016
Time: 10:30 AM
Number: 20010
Abstract ID:544
Candidate for Awards:None


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