Alternatives to Rootstock Propagation by Seed: Differences, Concerns and Expectations
2018
Ute Albrecht
Commercial citrus rootstock propagation traditionally occurs via use of nucellar apomictic seed which generate genetically identical seedlings that are used as liners for budding. With the high demand for superior rootstocks in the age of HLB, commercial nurseries are currently experiencing shortage of seeds for some of the most popular rootstock varieties. As a consequence, rootstock propagation has to rely on alternative methods such as cuttings or tissue culture to generate the large number of rootstock liners needed by the nurseries. This article describes differences between these propagation methods, industry concerns, and what to expect based on observations during early growing stages of nongrafted and grafted plants.
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