Artificial seeds of alfalfa (Medicago sativa L.). Induction of desiccation tolerance in somatic embryos View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1990-01

AUTHORS

Tissa Senaratna, Bryan D. McKersie, Stephen R. Bowley

ABSTRACT

The use of somatic embryos from cell culture systems in the clonal propagation of plants would be greatly facilitated if the somatic embryos could be dried and stored in a dormant state similar to true seeds. A cell culture system was developed for alfalfa (Medicago sativa L.) line RL34 which gave high yields of somatic embryos in an approximately synchronized pattern. These somatic embryos were treated with abscisic acid (ABA) at the cotyledonary stage of development to induce desiccation tolerance. With no visual preselection, approximately 60% of the dried embryos converted into plants upon reimbibition. When high quality embryos were selected prior to drying, 90 to 100% conversion rates were observed. The timing of the application of ABA in terms of embryo development was critical with an optimum being at cotyledonary stage spanning approximately 4 days; thus, synchronized embryo development is required for optimal expression in bulk samples. The vigor of the seedlings from dried somatic embryos was greater than those from embryos which had not been dried, but remained substantially lower than those from true seeds. More... »

PAGES

85-90

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02624160

DOI

http://dx.doi.org/10.1007/bf02624160

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1019408000


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