Journal
AGRONOMY-BASEL
Volume 12, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/agronomy12092070
Keywords
almond; chilling stress; melatonin; seed germination; stratification
Categories
Funding
- Ministry of Science and InnovationR + D + I Projects
- State Program for the Generation of Knowledge and Scientific and Technological Strengthening of the R + D + I System
- R + D + I Oriented to the Challenges of Society of the State Plan for Scientific and Technical Research and Innovation 2017-2020 - MCIN/AEI [PID2020-113029RB-I00]
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This study presented preliminary data on the promoting role of melatonin in almond seed germination and seedling growth, and highlighted its significant impact under light conditions.
Melatonin is a new plant hormone involved in multiple physiological functions in plants. Its roles in germination, photosynthesis, growth, flowering, fruiting, and senescence are noteworthy. Most studies have focused on its protective role in different stress situations, both biotic and abiotic. Preliminary data on its promoting role in almond seed germination and seedling growth are presented in this work. The germination-promoting capacity of melatonin was studied in different conditions of light and temperature, with important differences with respect to untreated seeds. The data confirmed that, at specific concentrations, melatonin was capable of stimulating germination, avoiding the stratification process, and therefore, shortening germination times. Furthermore, the melatonin-primed seedlings showed a higher root and aerial growth versus the untreated seeds when light was applied. The possible agronomic impact on the propagation of stone fruit trees was also discussed.
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