Fruit characteristics of F1 NIL Sletr1-2 vary with parental background

Imas Mintarsih; Anne Nuraini; Farida Farida; Erni Suminar; Rika Meliansyah; Syariful Mubarok

doi:10.24198/kultivasi.v24i3.67229

Fruit characteristics of F1 NIL Sletr1-2 vary with parental background

Imas Mintarsih, Anne Nuraini, Farida Farida, Erni Suminar, Rika Meliansyah, Syariful Mubarok

Abstract

The Sletr1-2 allele, which reduces ethylene sensitivity in tomatoes, offers a promising approach to extending fruit shelf life by slowing ripening-related metabolism. However, the trait’s success depends on compatibility with the recipient cultivar’s genetic background. This study evaluated fruit characteristics of F1 near-isogenic line (NIL) hybrids carrying Sletr1-2 in the commercial backgrounds ‘Costoluto’, ‘Oxheart’, and ‘Sart Roloise’. The field trial was carried out between May and August 2024 at the Experimental Station of Universitas Padjadjaran, Sumedang, Indonesia, following a randomized complete block design with eight biological replicates for each treatment. The results revealed that fruit characteristics of F1 NIL Sletr1-2 hybrids depend on parental background: NIL Sletr1-2 x ‘Oxheart’ produced small fruit size, thin pericarp, and poor visual quality, while NIL Sletr1-2 x ‘Costoluto’ and NIL Sletr1-2 x ‘Sart Roloise’ showed more commercial performance, with bigger fruit size. These findings highlight the critical role of parental background in optimizing Sletr1-2-linked traits and inform breeding strategies that balance postharvest resilience with commercial quality.

Keywords

tomato; ethylene; postharvest; fruit

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References

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DOI: https://doi.org/10.24198/kultivasi.v24i3.67229