Evaluation of African Tomato Landraces (Solanum Lycopersicum) Basedon Morphological and Horticultural Traits
Date
2018Author
Tembe, KO
Chemining'wa, G
Ambuko, J
Willis, Owino
Type
ArticleLanguage
enMetadata
Show full item recordAbstract
Crop landraces represent a reservoir of genetic diversity; hence understanding and
utilizing the genetic variation in tomato accessions are essential for improving the
crop. The objective of this study was to characterize 69 tomato landraces from the
World Vegetable Centre and the National Genebank of Kenya to identify desirable
morphological and horticultural traits that could be used for tomato crop
improvement. Field experiments were laid out in a randomized complete block
design with three replicates at the University of Nairobi's Kabete field station,
Kenya, in 2014 and 2015. Principal component analysis showed that the first five
components explained 78.4% of total variation among the genotypes. Traits that
contributed most to variability were the presence of green shoulder, fruit size,
exterior fruit color, pubescence density, flower color and fruit cross section shape.
Cluster analysis grouped the accessions into two major clusters. Cluster I contained
63 accessions while cluster II had six accessions. Analysis of variance
for quantitative traits indicated significant differences among the accessions for
single leaf area, soil plant analysis development, days to 50% flowering, days to
maturity, the number of fruits per plant, fruit width, fruit length and fruit weight
per plant. Fruit weight per plant ranged from 565.0 g to 2759.0 g per plant and
showed a positive significant correlation with fruit length (r = 0.28) and fruit width
(r = 0.30). The study showed the existence of wide genetic diversity among the
tomato accessions thus providing scope for future genetic improvement of the crop
URI
https://profiles.uonbi.ac.ke/jane_ambuko/publications/evaluation-african-tomato-landraces-solanum-lycopersicum-basedon-morphologihttp://erepository.uonbi.ac.ke/handle/11295/153433
Citation
Tembe KO, Chemining'wa G, Ambuko J, WillisOwinob. "Evaluation of African tomato landraces (Solanum lycopersicum) basedon morphological and horticultural traits." Agriculture and Natural Resources . 2018;52(6):536-542.Publisher
University of Nairobi
Rights
Attribution-NonCommercial-NoDerivs 3.0 United StatesUsage Rights
http://creativecommons.org/licenses/by-nc-nd/3.0/us/Collections
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