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Evaluating thermotolerant sunflower genotypes with temperature induction response (TIR) technique.
- Source :
- Environment Conservation Journal; 2024, Vol. 25 Issue 1, p175-183, 9p
- Publication Year :
- 2024
-
Abstract
- High temperature affects various physiological processes of the plant. Delayed sowing and changing climate both subject the crop to increasing temperatures during the crop growth period. There is a need to take on a technique to screen the wide number of genotypes for high-temperature tolerance. In the present study, a screening protocol was followed based on the principle of "acquired tolerance" in which 47 sunflower seedlings were exposed to sub-lethal heat stress to induce tolerance before subjecting to subsequent lethal stress and the second set were directly exposed to lethal stress. Significant variation was observed for the traits - survival percentage, total seedling length, and seedling weight. Tolerant inbreds were identified using Z distribution and PCA. Results suggested that TIR is a rapid and powerful technique that can be used to screen large number of germplasms to identify thermotolerant lines. [ABSTRACT FROM AUTHOR]
- Subjects :
- SUNFLOWER seeds
SUNFLOWERS
GENOTYPES
CROP growth
HIGH temperatures
TEMPERATURE
Subjects
Details
- Language :
- English
- ISSN :
- 09723099
- Volume :
- 25
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Environment Conservation Journal
- Publication Type :
- Academic Journal
- Accession number :
- 176025455
- Full Text :
- https://doi.org/10.36953/ECJ.24062640