Assessment of wild tomato accessions for fruit yield, physicochemical and nutritional properties under a rain forest agro-ecology

Abstract

Tomato (Solanum lycopersicum L.) is a broadly consumed fruit vegetable globally. It is one of the research mandate vegetable of the National Horticultural Research Institute (NIHORT), Ibadan, Nigeria. The institute’s contains diverse collections of tomato accessions and wild relatives, without utilization information for the African continent. With the decline in diversity and potential of cultivars, a robust tomato breeding pipeline with broad genetic base that eliminates redundancy in the development of lines with desired horticultural traits is paramount. This study evaluated the mean performance and variations of thirteen wild tomato accessions obtained from the C.M. Rick Tomato Genetic Resource Center, University of California, Davis, USA, evaluated for agronomic, nutritional and physicochemical traits under a rain forest zone in Nigeria. The accessions were planted and grown in three replications with randomized complete block design. Agronomic traits, physicochemical and nutritional parameters were measured and analyzed. There was significant (P < 0.001) variation among accessions for all traits measured. Accession LA0130 was separated from others by cluster analysis and was outstanding for its unique attributes which include: fruit yield parameters, total soluble solids, acidity and content. The principal component analysis suggests fruit yield related traits, acidity and contributed most to the variation among the 13 accessions. The results obtained can be used to breed materials adapted to a rain forest . These wild tomato accessions have genes with desirable agronomic, nutritional and physicochemical traits that could be into breeding lines to improve commercial tomato varieties.

Farmers’ Appraisal on Okra [Abelmoschus esculentus (L.)] Production and Phenotypic Characterization: A Synergistic Approach for Improvement

“…Using RSI to select outstanding accessions is useful for identifying putative parents for hybridization ( Ghani et al, 2020 ; Ibitoye et al, 2020 ). The rank performance identified accessions NHAB15 , NHAB18 , NHAB20 , NHAB13 , and NHAB17 as superior for number of days to first flower, stem girth, and pod girth.…”

“…Principal component analysis (PCA) was computed to determine the percentage contribution of each trait to the observed total variability among the studied okra accessions. Principal components with eigen values > 1.0 were selected to indicate traits with significant contribution ( Jeffers, 1967 ; Ibitoye et al, 2020 ).…”

Evaluation of the Growth, Yield, and Nutritional Composition of Five Newly Tomato (Lycopersicum esculentum Mill.) Varieties Under Agro-Climatic Condition at Sulaymaniyah Governorate-Iraq

“…The pH of tomatoes is determined primarily by the acid content of the fruit. The acidity of the fruit is also important as a contributor to the flavor of the tomato products; furthermore, many studies recommended that the tomato fruits with low pH are more desirable for fresh consumption and industrial processing [12]. In addition, TSS is a critical factor of crop quality and shelf life in both fresh and processed tomatoes.…”