Inheritance mechanism of fruit yield and yield-related traits in tomato for cadmium stress tolerance

Al-Rohily, Khalid M. (author), Abdelsatar, Mohamed Ali (author), Alsufyani, Raed Ammar (author), Alzannan, Haya R. (author), Hassona, Mohamed M. (author)

Understanding inheritance patterns and yield-related traits under cadmium stress is essential for breeding strategies that reduce cadmium’s negative effects on crops. In a study, fifteen F1 tomato hybrids from six genotypes were evaluated under both cadmium and non-cadmium conditions. The genetic analysis confirmed that a simple additive-dominance model explained the inheritance of most traits, suggesting that a few genes, often with one having a stronger effect, control these traits. Over-dominance was observed in most traits, and genotypes P3 and P5 carried the most dominant genes, performing best under cadmium stress. Heritability estimates showed that, under non-cadmium conditions, traits like branch number, fruit set, fruit mass, and locule number had medium narrow sense heritability, indicating dominance gene action was the main factor in inheritance. Other traits with low heritability also pointed to the importance of dominance effects. As a result, P3 and P5 genotypes were more tolerant to cadmium stress due to their dominant gene composition. Understanding the roles of dominance and non-additive gene action can guide the development of high-yield, cadmium-tolerant tomato varieties.

• Language: English
• Keywords: average degree of dominance, Cd stressed, gene action, heritability, Solanum lycopersicum, variance/covariance graphs
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: 11 str.
• Numbering: Vol. 121, no. 3
• PID: 20.500.12556/RUL-175636
• UDC: 63
• ISSN on article: 1854-1941
• DOI: 10.14720/aas.2025.121.3.22246
• COBISS.SI-ID: 256229635
• Publication date in RUL: 06.11.2025

Record is a part of a journal

• Title: Acta agriculturae Slovenica
• Publisher: Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Univerza v Ljubljani, Biotehniška fakulteta, Založba Univerze v Ljubljani
• ISSN: 1854-1941
• COBISS.SI-ID: 219581184

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Title: Mehanizmi dedovanja tolerance na kadmijev stres pri pridelku plodov in z njim poveznih lastnosti pri paradižniku
• Keywords: poprečna stopnja dominance, Cd stres, delovanje gena, dednost, Solanum lycopersicum, statistična analiza

Projects

• Funder: Other - Other funder or multiple funders
• Funding programme: King Saud University
• Project number: ORF-2025-557
• Name: Ongoing Research Funding program