The native Fukuoka shima sarunashi (Actinidia rufa) is exploitable for kiwifruit rootstock
2020
Shinomiya, R. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Muramoto, K. | Matsumoto, K. | Okumura, R.
We studied a characteristic of a seedling rootstock of native Fukuoka shima sarunashi. In replant problem field, we planted seven trees each ‘Hayward’ scions grafted on shima sarunashi rootstock and practice rootstock. After 5 years, death in ‘Hayward’ scions grafted on shima sarunashi rootstock suppressed compared to that on practice rootstock. The shima sarunashi rootstock was higher accumulated yield per unit ground area covered by tree canopy than the practice rootstock throughout the three years. The shima sarunashi rootstock was more tolerant of drying than practice rootstock. When ‘Amawi’ scions grafted on shima sarunashi rootstock were exposed to the drying, it was showed that lower leaves death and higher root respiration rate than practice rootstock. The seedling rootstock of native Fukuoka shima sarunashi was suitable as a kiwifruit rootstock in replant problem field and tolerates summer high-temperature drying.
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