Related Experiment Video
Updated: Jul 18, 2025
06:35
Semi-High Throughput Screening for Potential Drought-tolerance in Lettuce Lactuca sativa Germplasm Collections
Published on: April 17, 2015
9.1K
A Large-Scale Candidate-Gene Association Mapping for Drought Tolerance and Agronomic Traits in Sugarcane
Warodom Wirojsirasak1,2, Patcharin Songsri3,4, Nakorn Jongrungklang3,4
1Department of Biotechnology, Faculty of Science and Technology, Rangsit Campus, Thammasat University, Pathum Thani 12120, Thailand.
International Journal of Molecular Sciences
|August 26, 2023
Summary
This study identified key genetic variants for improving drought tolerance in sugarcane. These findings provide valuable resources for developing sugarcane cultivars with enhanced yield under various water conditions.
Area of Science:
- Plant Genetics
- Agronomy
- Molecular Biology
Background:
- Drought tolerance in sugarcane is crucial for crop improvement due to complex genetic inheritance.
- Identifying genetic loci controlling these traits is essential for developing resilient sugarcane varieties.
Purpose of the Study:
- To conduct a large-scale candidate gene association study in sugarcane to identify genetic variants linked to drought tolerance.
- To pinpoint genetic factors influencing agronomic and drought tolerance traits under different water conditions and crop seasons.
Main Methods:
- A diversity panel of sugarcane was analyzed using a candidate gene association study approach.
- 649 candidate genes were screened for marker-trait associations (MTAs) under water-stressed (WS) and non-stressed (NS) environments.
Main Results:
- 197 significant MTAs were identified in 141 candidate genes across 18 traits.
- MTAs varied between NS and WS conditions, with 95 and 62 MTAs detected under NS and WS, respectively.
- Identified MTAs explained substantial phenotypic variation (7.93-30.52%) and implicated genes in physiological adaptation, phytohormone metabolism, and drought response.
Conclusions:
- The study identified 19 pleiotropic genes and numerous genes related to drought tolerance indices.
- The discovered genetic resources are vital for enhancing sugarcane yield by combining yield and sugar traits under diverse environmental conditions.
