24-epibrassinolide enhances flower and fruit production of pepper (Capsicum annuum L.) under salt stress
2012
Samira Ibn Maaouia-Houimli | Samia ben Mansour-Gueddes | Bouthaina Dridi-Mouhandes | Mounir Denden
Among various environmental stresses, salt stress is extensively damaging to crops production in many areas of the world. The enhancement of plant tolerance is important for plant productivity. Brassinosteroids plays an important role in the plant response to adverse environmental conditions such as salt stress. Therefore, an experiment was conducted to explore the role of exogenously applied 24-epibrassinolide on flower and fruit production of pepper in presence or absence of NaCl stress (70 mM). The plants were sprayed with 10-6M of 24-epibrassinolide at vegetative, buds formation and early fruiting. 24-epibrassinolide improves flower number, fruit number and yield per plant, but was without effect on fruit mass and size. The detailed measurement of these parameters indicates that the effects of 24-epibrassinolide depend on the development stage of pepper plant and the application frequency of this hormone.
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