Browsing by Author "Chawe, Kissa"

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Assessment of Farmers’ Indigenous Knowledge and Preferences: A Tool for Sustainable Lablab Bean (Lablab purpureus. L. Sweet) Improvement and Utilization in Northern Tanzania
(Journal of Advances in Biology & Biotechnology, 2019-03-27) Chawe, Kissa; Venkataramana, Pavithravani; Ndakidemi, Patrick
Participatory farmers’ selection of preferred lablab bean (Lablab purpureus L. Sweet) was conducted in Moshi Rural, Kilimanjaro in northern Tanzania to identify farmers preferred traits and accessions. An experimental plot was laid down in augmented block design where a total of 41 accessions including the local check (Katumani) and improved variety (HA4) were sown in three blocks at the spacing of 75 cm x 40 cm. Semi-structured questionnaire and checklists were prepared to gather the farmers’ preferences and knowledge as well as factors for lablab crop abandonment. The factors for crop abandonment identified were unavailability of quality and improved varieties, low yield, the high cost of agro-chemicals, the presence of diseases and insect pests. In this study, farmers’ selection criteria of the accessions were resistance to diseases and insect pest, the number of pods per plant, early maturity, high yielding capacity, seed colourand size. The results showed that accessions D163 scored higher votes followed by D137, D88, D27, D85, D155, D7, D159, and D151 while the least preferred accession was D140 with Garrets’ mean score of 50.11, 50.06, 50.05, 50.02, 50.00, 49.88, 49.77, 49.59, 49.56 and 49.52, respectively. Farmers’ ranked traits to be incorporated for future bean breeding in order of importance as; high yielding, better taste, earliness and short cooking time. Therefore, successful selection of germplasm through participatory research can raise awareness, adoption, and utilization of the lablab crop which change the portfolio of varieties available in the area and open the new door for plant breeders.
Morphological screening and farmers’ acceptability of selected lablab bean (lablab purpureus) accessions in Moshi district, Tanzania
(NM-AIST, 2019-04) Chawe, Kissa
A set of 41 lablab bean accessions were evaluated based on morphological characteristics and farmers’ participatory selection was performed based on agronomic and sensory traits. An experimental plot was laid down in augmented block design where accessions collected from different gene bank were sown at spacing of 75 cm x 40 cm. Descriptive and multivariate analysis based on 21 quantitative traits revealed high coefficient of variation (CVs) in secondary branches, seed yield, and pods per plant. Principle component analysis (PCA) showed that first 6PCs contributed to 83.3% of the total variation. Days to maturity had significant correlation with days to podding (0.855) and flowering (0.821). Seed yield per plant had strong association with pods per plant (0.793). Cluster analysis based on Un-weighted Pair Group Method Average (UPGMA) grouped 41 accessions into 7 clusters based on traits kinship. Cluster II, VI and VII are genetically different from other clusters. Farmers selected ten best accessions, D163, D137, D88 D27, D85, D155, D7, D159, D151 and D140. The selection criteria perceived were diseases and pest resistance, pod per plant, earliness, bulk leaves, high yield, seed colour, seed size, drought tolerance, plant height and growth type. Farmers’ preferred traits; high yielding, better taste, earliness and short cooking time need to be incorporated in bean breeding programs. In sensory evaluation, panelists chose accessions D137, D85 and D88 due to good sensory potential for home consumption. This study recommends accessions D137, D163, D85, D208 and D88 for further evaluation on different locations for developing lablab varieties in Tanzania.