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ARS Home » Plains Area » Fort Collins, Colorado » Center for Agricultural Resources Research » Agricultural Genetic Resources Preservation Research » Research » Publications at this Location » Publication #358521

Research Project: Efficient and Effective Preservation and Management of Plant and Microbial Genetic Resource Collections

Location: Agricultural Genetic Resources Preservation Research

Title: How applicable are dormant buds in cryopreservation of horticultural woody plant crops? The Malus case

item Jenderek, Maria
item TANNER, JUSTIN - Colorado State University
item Chao, Chihcheng
item Blackburn, Harvey

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 3/19/2018
Publication Date: N/A
Citation: N/A

Interpretive Summary: N/A

Technical Abstract: The method of using dormant buds (DB) for germplasm cryopreservation was published a few decades ago and since then, it was used in preserving genetic resources of selected horticultural woody-plant species. The advantages of employing DB in preservation are widely known; the most relevant are no requirements of aseptic cultures, high processing throughput and involvement of a relatively low skilled technical support; but the method has also shortcomings as seasonality of processing and lack of procedural modifications that might support processing of all accessions in a collection. The U.S. NLGRP cryopreserved DB of 2,115 unique Malus accessions (in 51 species) with a >40% post cryo viability (lab standard). The method worked for all accessions in 20 species, for >90% of accessions in six species and at a various percent (0-89%) in the remaining 25 species. For species with the largest number (>88) of cryoprocessed accessions (M. domestica, M. hybr. and M. siviersii), the percent of accessions responding favorable to the DB method was high (82-97%). The results indicated variability in Malus DB response to LN exposure; similar results were recorded in the Pyrus and Ribes collections. Procedural refinements of the DB cryopreservation method might support the method applicability to a much higher number of accessions and its use in other collections of horticultural woody species. Our study on Vaccinium cryopreservation showed twig pre-harvest temperature was critical for a successful cryopreservation of DB as well as application of cryoprotectans and antioxidants in cryoprprocessing of Prunus DBs.