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271084

CRYOPRESERVATION OF IN VITRO ESTABLISHED SHOOT TIP EXPLANTS OF DATE PALM CV. ZAGHLOOL

Article

Last updated: 22 Jan 2023

Subjects

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Tags

Horticulture (Vegetable, Pomology and Ornamentals)

Abstract

Cryoprotection procedures for in vitro established shoot tip explants of Date palm cv. Zaghlool prior to cryoprservation process in liquid nitrogen were investigated in this study. This work aimed to develop simple cryoprotection procedure that can be handled easily. The first cryoprotection procedure was to study the effects of different sucrose concentrations (0.1, 0.3, 0.5, and 0.7Mol) in preculturing medium and the incubation under 5˚C or 27˚C for four weeks. The second cryoprotection procedure was to study the effects of the same previous sucrose concentrations in preculturing medium and the incubation under 27˚C for four weeks followed by desiccation procedure for two hours in an open petri dish exposed to continual current of sterile air in the laminar airflow cabinet. The third cryoprotection procedure was to study the effects of abscisic acid (ABA) concentrations (2.0, 4.0, 6.0 and 8.0 mg/L) in preculturing media and the incubation under 5˚C or 27˚C for four weeks. The fourth cryoprotection procedure was to study the effects of the same previous concentrations of (ABA) in preculturing media and incubation under 27 ˚ C for four weeks followed by the same desiccation procedure . All shoot tip explants obtained from the four cryoprotiction procedures were plunged in liquid nitrogen Dewar at (-196 oC) for one hour followed by thawing process in water bath at 40 oC. All cryopreserved shoot tip explants were cultured on recovery medium for 3 weeks to examine their potential for surviving after cryopreservation process. The results of explants viability showed that all of the tested pretreatments gave quiet results for survival. The optimal procedure that we developed was the cryoprotiction of cultured shoot tip explants on preculturing medium supplemented with 0.5 M of sucrose concentration for four weeks and incubated at 27oC followed by air desiccation treatment prior to cryopreservation process. The cryopreserved explants from this cryoprotiction procedure revealed high survival and could resume their life cycle in normal manner on the recovery medium. Date palm explants cryopreservation needs more studies to achieve better results in germplasm conservation

DOI

10.21608/ajas.2007.271084

Keywords

cryopreservation, in Vitro, shoot tip, date palm

Authors

First Name

M.

Last Name

M. El-Dawayati

MiddleName

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Affiliation

The Central Laboratory for Date Palm Researches and Development, Agriculture Research Center, Cairo, Egypt

Email

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City

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Orcid

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First Name

E.

Last Name

I. Baker

MiddleName

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Affiliation

Department of Pomology, Faculty of Agriculture, Cairo University, Egypt.

Email

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City

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Orcid

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First Name

A.

Last Name

H. Gomaa

MiddleName

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Affiliation

Department of Pomology, Faculty of Agriculture, Cairo University, Egyp

Email

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City

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Orcid

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Volume

38

Article Issue

1

Related Issue

37799

Issue Date

2007-03-01

Receive Date

2007-01-01

Publish Date

2007-03-01

Page Start

75

Page End

95

Print ISSN

1110-0486

Online ISSN

2356-9840

Link

https://ajas.journals.ekb.eg/article_271084.html

Detail API

https://ajas.journals.ekb.eg/service?article_code=271084

Order

3

Type

Original Article

Type Code

62

Publication Type

Journal

Publication Title

Assiut Journal of Agricultural Sciences

Publication Link

https://ajas.journals.ekb.eg/

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Details

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Article

Created At

22 Jan 2023