1. Morphological, Physiological, and Photosynthetic Differences of Tartary Buckwheat Induced by Post-Anthesis Drought.
- Author
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Yuan, Hang, Wang, Qiang, Qi, Anyin, Li, Shuang, Hu, Yan, Hu, Zhiming, Guo, Laichun, Liang, Chenggang, Li, Wurijimusi, Liu, Changying, Sun, Yanxia, Zou, Liang, Peng, Lianxin, Xiang, Dabing, Liu, Cheng, Huang, Jingwei, and Wan, Yan
- Subjects
NUTRITIONAL value ,DROUGHTS ,DROUGHT tolerance ,POLYPHENOLS ,PROLINE ,BUCKWHEAT - Abstract
Tartary buckwheat (Fagopyrum tataricum (L.) Gaertn) is a crop of significant interest due to its nutritional value and resilience to drought conditions. However, drought, particularly following flowering, is a major factor contributing to yield reduction. This research employed two distinct Tartary buckwheat genotypes to investigate the effects of post-anthesis drought on growth and physicochemical characteristics. The study aimed to elucidate the response of Tartary buckwheat to drought stress. The findings indicated that post-anthesis drought adversely impacted the growth, morphology, and biomass accumulation of Tartary buckwheat. Drought stress enhanced the maximum photosynthetic capacity (Fv/Fm) and light protection ability (NPQ) of the 'Xiqiao-2' genotype. In response to drought stress, 'Dingku-1' and 'Xiqiao-2' maintained osmotic balance by accumulating soluble sugars and proline, respectively. Notably, 'Xiqiao-2' exhibited elevated levels of flavonoids and polyphenols in its leaves, which helped mitigate oxidative damage caused by drought. Furthermore, rewatering after a brief drought period significantly improved plant height, stem diameter, and biomass accumulation in 'Dingku-1'. Overall, 'Xiqiao-2' demonstrated greater long-term tolerance to post-anthesis drought, while 'Dingku-1' was less adversely affected by short-term post-anthesis drought. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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