Evaluation of quantitative and qualitative traits of new tomato varieties under greenhouse conditions

Document Type : Research

Authors

Seed and Plant Certification and Registration Research Institute (SPCRI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.

10.22092/rhsj.2025.370276.1128

Abstract

Tomato Distinctness, Uniformity, and Stability (DUS) testing is a critical component for plant variety protection and seed certification,ensuring that new varieties are distinguishable from existing ones,uniform in their characteristics, and stable across generations.This process is essential for safeguarding breeders' rights and maintaining agricultural standards. In order to provide morphological description and evaluation of Distinctness,Uniformity and Stability (DUS), 13 indeterminate tomato varieties(9 new varieties and4 control varieties)were evaluated in greenhouse conditions.Varieties were distinguished based on the qualitative trait of fruit green shoulder,the Pseudo-qualitative trait of fruit shape in longitudinal section, and quantitative traits such as fruit firmness, inflorescence type, ribbing at peduncle end, blistering of leaf, size of peduncle scar, anthocyanin coloration in the upper part of the stem, leaf attitude, and number of locules in fruit. Analysis of variance quantitative traits indicated that evaluated traits such as fruit length and diameter, length to diameter of fruit, pericarp thickness, total diameter of fruit, diameter of core, fruit weight and pedicle length were significantly different at the P ≤ 0.01 probability level. Significant differences were observed between cultivars in fruit weight (9-192 g) and pericarp thickness. Also width of leaf were significantly different at the P ≤ 0.05 probability level. A significant positive correlation was observed between the diameter of the fruit core and the traits of pericarp thickness, fruit length, fruit diameter and fruit weight at the 1% level. In addition, the length of the abscission layer showed a significant positive correlation with the traits of fruit length, fruit diameter, and fruit weight at the 5% level. To assess uniformity, a community standard of 1% was used with a confidence level of at least 95%, indicating that all varieties met the required uniformity standards. Due to the uniformity of the tested cultivars, the cultivars had the necessary stability.

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Research in Horticultural Sciences
Volume 4, Issue 1
September 2025
Pages 137-153

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