Foliar application of 24-epibrassinolide enhances leaf nicotine content under low temperature conditions during the mature stage of flue-cured tobacco by regulating cold stress tolerance.

ABSTRACT:

Background

Low temperatures disrupt nitrogen metabolism in tobacco, resulting in lower nicotine content in the leaves. 24-epibrassinolide (EBR) is a widely used plant growth regulator known for its roles in enhancing cold tolerance and nitrogen metabolism. Nevertheless, it remains unclear whether EBR enhances leaf nicotine content under low temperature conditions during the mature stage of flue-cured tobacco.

Results

To investigate the effects of EBR on leaf nicotine content under low temperature conditions during the mature stage of 'Yunyan 87' flue-cured tobacco, four treatments (foliar spraying of 0, 0.1, 0.2 and 0.4 mg·L^- 1 EBR solutions) were performed by using a single-factor randomized complete block design. The result showed that foliar spraying of differe

SUBMITTER: Chen H 

PROVIDER: S-EPMC11744823 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature