Genomic markers analysis associated with resistance to Alternaria alternata (fr.) keissler-tomato pathotype, Solanum lycopersicum L

Genomic markers analysis associated with resistance to Alternaria alternata (fr.) keissler-tomato pathotype, Solanum lycopersicum L

Copyright © 2022 by JAPANESE SOCIETY OF BREEDING.

Bibliographische Detailangaben
Veröffentlicht in:Breeding science. - 1998. - 72(2022), 4 vom: 13. Sept., Seite 285-296
1. Verfasser: Alizadeh-Moghaddam, Giti (VerfasserIn)
Weitere Verfasser: Nasr-Esfahani, Mehdi, Rezayatmand, Zahra, Khozaei, Mahdi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Breeding science
Schlagworte:Journal Article ISSR markers early blight genetic structure phenotypic profiles
Beschreibung
Zusammenfassung:Copyright © 2022 by JAPANESE SOCIETY OF BREEDING.
Alternaria alternata, the causal pathogen of early blight (EB) disease, is one of the most important diseases in tomato, and other solanaceae family. We analyzed 35 tomato genotypes for quantitative/qualitative traits and biomass growth parameters, as well as the extent and structure of genetic variation associated with EB resistance. Phenotypic comparisons displayed significant differences in leaf blade width (24.95%), stem thickness (30.28%), foliage density (18.88%), and plant size (18.89%), with significant positive correlations with EB resistance (0.18-0.75). Correlation analysis showed that mature fruit size, thickness of fruit pericarp, and leaf type were significantly and negatively correlated with EB resistance (up to -0.41). The susceptible tomato seedlings represented significant reductions in biomass parameters. According to ISSR analysis, the highest resolving power (≥0.79) and heterozygosity (≥0.24) values revealed the presence of high genetic variability among the tomato genotypes. Bayesian model-based STRUCTURE analysis assembled the genotypes into 4 (best ΔK = 4) genetic groups. Combined phenotypic and molecular markers proved to be significantly useful for genetic diversity assessment associated with EB disease resistance
Beschreibung:Date Revised 28.03.2023
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1344-7610
DOI:10.1270/jsbbs.22003