Faculty of Science

Permanent URI for this community

https://ir.unilag.edu.ng/handle/123456789/3300
THE MISSION AND VISION: To provide the platform of high academic standard in both research and learning in Science. To be the pace-setting Faculty of Science in Nigeria and beyond in producing excellent graduates in research, learning and character.

Browse

Browsing Faculty of Science by Author "Abdul, S.D."

Now showing 1 - 3 of 3
  • Item
    Open Access
    Diversity study of a neglected and underutilized crop species: A case study of Acha (Digitaria spp (Kippist) (stapf)
    (Genetic Society of Nigeria, 2018-12) Ogunkanmi, L.A.; Iloh, A.C.; Dachi, S.; Onuminya, T.O.; Osundinakin, M.I.; Ajikah, L.B.; Rotimi, O.T.; Abdul, S.D.; Ogundipe, O.T.
    Acha is a crop endowed with wealth of nutritional and medicinal uses, yet the rate at which the crop is being lost is at alarming rate. Hence, the need for germplasm collection, preservation and utilization for future improvement. This study carried out exploration trip on Acha collections (Digitaria exilis and Digitaria iburua) with a view to unravel the diversity study and investigating its genetic resources for the benefit of mankind. Five Northern states in Nigeria where Acha was cultivated were fully explored for sample collections. Germplasm collections was preceded by initial discussions with farmers on their fields, at market places and homes. At the end of the exploration tour, a total of thirty eight villages were visited out of which seventy five Acha collections were identified. The germplasm collected includes seed saved from previous harvest, purchased from the market, and those shared among colleagues. At the end of the trip, a pre project workshop was organized where farmers from the five states were invited and discussion on the uses, cultivation, processing and benefit of Acha were fully discussed.
  • Item
    Open Access
    Screening for drought tolerance in some species of Acha
    (Botanical Society of Nigeria, 2018-12) Ogunkanmi, L.A.; Iloh, A.C.; Dachi, S.; Onuminya, T.O.; Abdul, S.D.; Osundinakin, M.I.; Ajikah, L.B.; Rotimi, O.T.; Ogundipe, O.T.
    Drought is one of the greatest threats affecting agricultural productivity in sub-Sahara Africa. In view of this, the present study was aimed at screening for drought tolerance in Acha. The status of seventy - five collections from thirty - four towns in seventeen Local Government Areas of five northern states were evaluated at the National Centre for Genetic Resources and Biotechnology (NACGRAB), Ibadan, using a modified wooden box technique for drought-tolerance screening. The seeds were planted in ratio 3:1 of sandy/loamy soil, for twenty-one days after which they were subjected to water stress for 40 days to identify the drought tolerant and susceptible lines. Weeding and watering were applied as at when due. Results on wilting percentages at different days after stoppage of watering showed that lines Na1, Na2, B7, B12, N5 and N15 were the most susceptible to drought with zero percentage recovery after fourteen days; when water was reintroduced, the percentage recovery showed that lines P19, P21, P22, P23, P25 and P29 had 80% recovery rate. This showed that parental lines could be selected among them for breeding programme. Study of root architecture on the suspected drought-tolerant lines revealed longer primary and lateral root length than the susceptible lines. Identified drought-tolerant lines from this study are recommended to breeders for drought-tolerant breeding programme in Acha.
  • Item
    Open Access
    Variations in Acha (Digitaria species) grain characteristics
    (Genetic Society of Nigeria, 2018) Abdul, S.D.; Ogunkanmi, L.A.; Dachi, S.; Onuminya, T.O.; Osundinakin, M.I.; Ajikah, L.A.; Rotimi, O.T.; Iloh, A.C.; Ogundipe, O.T.
    Ten acha accessions (Digitaria sp.) collected from Kaduna (K1, K2, K3, K4 and K5), Nassarawa (NA1 and NA2) and Niger (NI1, NI2 and NI3) States, in the Northern parts of Nigeria were evaluated for their size (length and width) of corticated and decorticated grains and shape, number of nerves on the abaxial and adaxial surfaces of the glumes and variations in seed colour in the Botany Laboratory of Abubakar Tafawa Balewa University, Bauchi, Nigeria. The results showed that (K5) had large grain size averaging 1.47 mm and 1.17 mm in length, and 0.79 mm and 0.75 mm in width for corticated and decorticated grains, respectively. Overall for corticated grains K1 had low grain length, averaging 1.03 mm, while NI3 had low grain width averaging 0.57 mm. However, for decorticated grains low average length and width of 0.83 mm and 0.57 mm were recorded on K4 and NA1, respectively. The grains were elliptical to ovate in shape. The number of nerves on the adaxial surface varied widely from 0-5 in all the accessions, except for K5 that consistently had three (3) nerves. Similarly, the number of nerves on the abaxial glumes of the accessions ranged from 3-8, except for K5 that had five (5) nerves. Of all the accessions only the glumes of the grains from the accession K5 had hairs on their surfaces and margins. All the accessions had glume colour that varied from light brown to dark brown, except K5 that had consistently dark brown colour. The decorticated seed colours across the accessions were glassy white to purple, except K5 that showed uniformly glassy white colour.