A kiwifruit cultivar crossbred with Actinidia chinensis and Actinidia rufa has practical tolerance to Pseudomonas syringae pv. actinidiae biovar 3
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The kiwifruit brand Sanuki Kiwicco® comprises five kiwifruit cultivars (KagawaUP-Ki1, −2, −3, −4, and − 5) that are hybrids of Actinidia chinensis and Actinidia rufa, have high quality, small fruits with a sugar content of 17 to 20% and a low level of protease, thus eliminating any mouth irritation. The cultivars of Sanuki Kiwicco® are more tolerant to bacterial blossom blight and can be stored longer than previously released cultivar Kosui, another hybrid between A. chinensis and A. rufa. Our investigations using A. rufa, a wild species in warm regions of Japan, revealed efficient transduction of tolerance to bacterial canker disease caused by Pseudomonas syringae pv. actinidiae biovar 3. The Sanuki Kiwicco® cultivars also proved to have practical tolerance to the disease caused by biovar 3 in laboratory and field tests.
KeywordsKiwifruit Sanuki Kiwicco® Pseudomonas syringae pv. actinidiae biovar 3 Psa3 Actinidia rufa
This research was supported by grants from the Project of the NARO Bio-oriented Technology Research Advancement Institution (the special scheme project on regional developing strategy) (No. 16822474).
Compliance with ethical standards
Conflict of interest
All the authors declare that they have no conflict of interest.
This article does not contain any studies with human participants or animals performed by any of the authors.
Informed consent was obtained from all individual participants included in the study.
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