Saudi Journal of Engineering and Technology (SJEAT)
Volume-3 | Issue-08 | 547-552
Original Research Article
The Role of Different Osmotic Agents on Embryogenesis and Plant Regeneration in Date Palm cultivar, Khalas
Abdullatif A. Al-Khateeb, Solliman A. Al-Khateeb, Wael F. Shehata, Mohei El-Din Solliman, Saleh M. Alturki
Published : Aug. 30, 2018
Abstract
In vitro embryogenesis and plant regeneration were studied in date palm
cultivar, Khalas using three osmotic agents (PEG, Mannitol, and Glucose) and NaCl for
five different time periods ranging from 1 to 24 hrs. The highest frequency of somatic
embryogenesis was recorded in the medium containing 15% PEG in the MS-culture
medium. Similarly, the highest number of plantlets was also obtained on the
regenerating medium containing PEG under elevated treatment time periods. Mannitol
and glucose showed almost the same response at all treatment levels producing on an
average 2 to 3 embryos per culture but did not had any positive effect on plant
regeneration. Of all the osmtic agents, PEG proved to be better in producing more callus
fresh and dry weights followed by mannitol indicating that at this stage these osmotica
worked as non-metabolic osmotic agents. The use of NaCl as an osmotic agent produced
the most adverse effects on callus fresh weight and embryogenesis, with no embryos
formation at 12 and 24 h treatments. These studies revealed that elevated levels of PEG
showed stimulating effects and helped in the production of more callus mass, somatic
embryos and plantlets formation compared to other osmotic agents used.