Phenotypic characterization of tomato Solanum lycopersicum L. cultivars from Southern Nigeria using morphology

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Authors :

Chime A O1, Aiwansoba R O1, Eze C J1, Osawaru M E1 and Ogwu M C*1,2

Author Address :

1Department of Plant Biology and Biotechnology, Faculty of Life Sciences, University of Benin, Benin City, Nigeria. 2Department of Biological Sciences, College of Natural Sciences, Seoul National University, Seoul 151-742, South Korea.*For correspondence: matthew.ogwu@uniben.edu

Abstract :

Cultivated tomato (Solanum lycopersicum L.) has few intraspecific diversities unlike in the wild. This study used morphology to characterize four cultivars of S. lycopersicum, comprising two local cultivars (BNL and EKL) obtained from traditional agriculture system and two improved cultivars (IMPA and IMPB) obtained from a research institute. The cultivars were cultivated in experimental field of the University of Benin, Nigeria. Thirty-two qualitative and quantitative characters based on International Plant Genetic Resources Institute descriptors for the crop were used to enumerate their phenotype. The germination rate and number of days to flowering was the same across the four cultivars. The principal component analysis of the characters suggest vine length, fruit weight, ribbing at calyx end, plant size, leaf attitude, fruit size and fruit shape contributed most to the variation among the four cultivars. The local cultivars had purple hypocotyl while the two improved cultivars had green hypocotyl. Semi determinate growth was observed in all the cultivars except in BNL. Therefore, the results suggests that the four cultivars studied are morphologically distinct. The study indicates that the two local cultivars have good fruit quality and yield attributes, which may be exploited in future plant breeding and genetic improvement of tomato germplasm in Nigeria.

Keywords :

Solanum lycopersicum, traditional agriculture, food security, plant conservation, morphological characterization

Article Info :

Received 18-Jun-2017, Revised 24-Aug-2017, Accepted 03-Sep-2017

 

 

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