Cryopreservation: A tool to conserve date palm in Saudi Arabia

• Published in: Saudi journal of biological sciences 2019-11, Vol.26 (7), p.1896-1902
• Main Authors: Alansi, Saleh, Al-Qurainy, Fahad, Nadeem, Mohammad, Khan, Salim, Tarroum, Mohamed, Alshameri, Aref, Gaafar, Abdel-Rhman Z.
• Format: Article
• Language: English
• Subjects: Cryopreservation; Date palm; Dehydration; Embryogenesis; Encapsulation; Vitrification; التمور; الجوانب الفسيولوجية; الحفظ بالتجميد; النخيل
• ISSN: 1319-562X; 2213-7106
• DOI: 10.1016/j.sjbs.2019.02.004

The cryostoring of embryogenic tissue of the date palm (Phoenix dactylifera L. cv. Sagai) was examined through dehydrated-encapsulation, vitrification, and vitrification-encapsulation. The most extreme regeneration rate (53.33%) of epitomized, cryostored liquid nitrogen (+LN) treated embryos was observed when pre-embryonic masses were hatched with 0.5 M sucrose for 48 h pursued by 6 h air drying out. The most noteworthy survival rate (80.0%) of epitomized, cryopreserved embryonic cluster came about when calli were hatched with 0.3 or 0.7 M sucrose for 48 h pursued by four hours of lack of hydration, or with 0.5 M sucrose for 48 h without air drying out or with 2 h of air drying out. Following cryopreservation utilizing the embodiment vitrification convention, the most astounding survival (86.7%) as well as the greatest growth (46.7%) was accomplished when the typified vitrified, cryopreserved calli were treated with Vitrification Solution 2 for plants (PVS2) for 60 min at 25 °C. Cryopreservation utilizing the vitrification convention brought about the most extreme recuperation of 53.3%, when vitrified-cryopreserved calli were subjected to PVS2 solution for 30 min at 25 °C. Most extreme (40%) regeneration of vitrified, cryopreserved embryonic calli was seen when these calli were treated with PVS2 solution for 60 min at 25 °C. The outcome got amid this investigation of regrowth after cryopreservation of the cv. Sagai was over the base suitable for a cryo-germplasm bank. Recovery and regrowth were above 30% for all the techniques developed for the cv. Sagai.