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Assessments of rooting, vegetative growth, bulb production, genetic integrity and biochemical compounds in cryopreserved plants of shallot
Plant Cell, Tissue and Organ Culture ( IF 2.196 ) Pub Date : 2020-04-27 , DOI: 10.1007/s11240-020-01820-7
Min-Rui Wang, Zhibo Hamborg, Rune Slimestad, Abdelhameed Elameen, Dag-Ragnar Blystad, Sissel Haugslien, Gry Skjeseth, Qiao-Chun Wang

Shallot (Allium cepa var. aggregatum), a small bulb onion, is widely grown in the world. We previously reported a droplet-vitrification for cryopreservation of in vitro-grown shoot tips of shallot genotype ‘10603’. The present study further evaluated rooting, vegetative growth, bulb production and contents of biochemical compounds, as well as genetic stability in cryo-derived plants. The results showed no significant differences in rooting, vegetative growth, bulb production and contents of soluble sugars and flavonols between the cryo- and in vitro-derived plants. Analyses of ISSR and AFLP markers did not detect any polymorphic bands in the cryo-derived plants. These results indicate rooting and vegetative growth ability, biochemical compounds and genetic stability were maintained in cryo-derived plants. The present study provides experimental evidences that support the use of cryopreservation method for long-term preservation of genetic resources of shallots and other Allium species.
更新日期:2020-04-27

 

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