期刊
ACTA SCIENTIARUM-AGRONOMY
卷 44, 期 -, 页码 -出版社
UNIV ESTADUAL MARINGA, PRO-REITORIA PESQUISA POS-GRADUACAO
DOI: 10.4025/actasciagron.v44i1.55647
关键词
Lycopersicon esculentum; epibrassinolide; salt stress; tolerance
类别
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [PDJ-Post Doctoral Junior 153397/2018-7]
The study showed that epibrassinolide (EBL) can improve the growth, physiology, and production characteristics of tomato plants under salt stress. Exogenous application of EBL attenuated the adverse effects of salt stress, increased salt tolerance, and improved photosynthesis and fruit production in tomato plants.
Salinity is one of the environmental stresses that most cause losses in agricultural systems, including tomato production. Brassinosteroids, such as epibrassinolide (EBL), have multiple actions in essential processes in plants. Thus, the objective of this study was to evaluate the contributions of EBL to the growth, physiology, and production of tomato plants under salinity. The experiment was conducted in a factorial scheme, with five levels of water salinity (0.5 [the control], 1.5, 3.0, 4.5, and 6.0 dS m(-1)) and two concentrations of EBL (0 and 10(-6) M). Salt stress reduced tomato growth, relative water content, membrane integrity, gas exchange, and fruit production. However, the exogenous application of EBL attenuated the adverse effects, partially improving these characteristics at all salinity levels. EBL reduced electrolyte leakage and increased membrane integrity and relative water content in control and stressed plants. Additionally, it increased the content of photosynthetic pigments, stomatal conductance, transpiration, and photosynthesis, which led to higher leaf dry mass production, fruit transverse diameter, and production per plant. Therefore, our results confirmed that foliar application of EBL improved the characteristics of stressed and non-stressed tomato plants.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据