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Peer-reviewedCC BYPlant-environment interactions (Hoboken, N.J.)

Morphological, Phytochemical, and Molecular Characterization of Advanced Tomato Lines Under Heat Stress Conditions

  • Haidar Anwar Arkwazee1
  • Salam Mahmud Sulaiman1
  • Kamaran Salh Rasul1
  • Hawar Halshoy1
  • Shwana Ahmed Braim2
  1. 1University of Sulaimani
  2. 2Nottingham Trent University
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Abstract

Heat stress severely limits tomato growth, yield, and biochemical stability, highlighting the need for thermotolerant genotypes. This study evaluated six advanced tomato lines using morphological, biochemical, genetic, and molecular analyses under heat stress conditions. Significant genotypic differences (p < 0.001) were observed across the evaluated traits, with TAL101‐2 and TAL101‐1 exhibiting better growth and reproductive performance under high‐temperature conditions. TAL105 showed better growth and antioxidant activity, whereas TAL104 exhibited strong biochemical adaptation, as evidenced by elevated phenolic content and antioxidant activity. TAL101‐2 maintained relatively high fruit set despite limited vegetative growth. High heritability and genetic advance for reproductive and phytochemical traits indicated strong genetic control. Correlation and principal component analyses revealed positive relationships between vegetative vigor and yield, whereas biochemical traits were associated with oxidative stress tolerance. Molecular and phylogenetic analyses confirmed clear genetic diversity among the lines. Stress‐responsive gene profiling also revealed distinct marker activity patterns. TAL105 and TAL104 were identified as promising candidates for breeding heat‐tolerant tomato cultivars.

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Cite

BibTeXRIS
BibTeX
@article{arkwazee2026morphological,
  title = {{Morphological, Phytochemical, and Molecular Characterization of Advanced Tomato Lines Under Heat Stress Conditions}},
  author = {Haidar Anwar Arkwazee and Salam Mahmud Sulaiman and Kamaran Salh Rasul and Hawar Halshoy and Shwana Ahmed Braim},
  journal = {Plant-environment interactions (Hoboken, N.J.)},
  year = {2026},
  month = oct,
  doi = {10.1002/pei3.70220},
  url = {https://europepmc.org/article/PMC/PMC13653229},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Morphological, Phytochemical, and Molecular Characterization of Advanced Tomato Lines Under Heat Stress Conditions
AU  - Haidar Anwar Arkwazee
AU  - Salam Mahmud Sulaiman
AU  - Kamaran Salh Rasul
AU  - Hawar Halshoy
AU  - Shwana Ahmed Braim
PY  - 2026
DA  - 2026/10/01
JO  - Plant-environment interactions (Hoboken, N.J.)
DO  - 10.1002/pei3.70220
UR  - https://europepmc.org/article/PMC/PMC13653229
AB  - Heat stress severely limits tomato growth, yield, and biochemical stability, highlighting the need for thermotolerant genotypes. This study evaluated six advanced tomato lines using morphological, biochemical, genetic, and molecular analyses under heat stress conditions. Significant genotypic differences (p < 0.001) were observed across the evaluated traits, with TAL101‐2 and TAL101‐1 exhibiting better growth and reproductive performance under high‐temperature conditions. TAL105 showed better growth and antioxidant activity, whereas TAL104 exhibited strong biochemical adaptation, as evidenced by elevated phenolic content and antioxidant activity. TAL101‐2 maintained relatively high fruit set despite limited vegetative growth. High heritability and genetic advance for reproductive and phytochemical traits indicated strong genetic control. Correlation and principal component analyses revealed positive relationships between vegetative vigor and yield, whereas biochemical traits were associated with oxidative stress tolerance. Molecular and phylogenetic analyses confirmed clear genetic diversity among the lines. Stress‐responsive gene profiling also revealed distinct marker activity patterns. TAL105 and TAL104 were identified as promising candidates for breeding heat‐tolerant tomato cultivars.
SN  - 2575-6265
ER  -