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2008 Michael L Roose (Rootstock Breeding & Evaluation)

Citrus Rootstock Breeding and Evaluation

Citrus rootstocks are the foundation of any citrus grove, and choosing a rootstock is typically a decision that affects performance and profitability for the life of the grove. The objective of this project is to provide the California citrus industry with a wider diversity of rootstocks and with information that allows the optimal rootstock to be chosen for a given site. The current range of rootstocks does not include good options for specific conditions, such as calcareous soil types, long-term compatibility with mandarins and lemons, strong resistance to all citrus nematode biotypes, and tolerance or resistance to new threats such as Diaprepes root weevil.