Breeding of 'Tochigi i 27 gou' a strawberry cultivar producing extremely large fruits
2015
Shigeno, T. | Naoi, M. | Ueki, M. | Ienaka, T. | Okamura, A. | Sunaga, T. | Kobayasi, Y. | Nagashima, A. | Inaba, Y. | Hatakeyama, A. | Kebukawa, S. | Toyoda, A. | Nakanishi, T.
'Tochigi i27' is a new strawberry cultivar released by the Tochigi Strawberry Research Center (Tochigi Prefectural Agricultural Experiment Station) in 2011. It was selected from hybrid seedlings resulting from a cross carried out in 2006 between 'tochigi 20' and '00-24-1'. The aim of this cross was to obtain a high performance cultivar for the forcing culture of strawberry in the Tochigi prefecture. 'Tochigi i27' is vigorous even in winter and it produces runners well. It has five to seven flowers per inflorescence and the fruits are very large 25 grams on average, conical, of deep orange color, and firmer than those of the 'Tochiotome' cultivar. The yield in 'Tochigi i27' cultivar is more than 20% higher than in 'Tochiotome'. The sugar content and acidity in the fruits is lower than that in 'Tochiotome'; however, the ratio of sweetness to acidity is similar to 'Tochiotome'. In addition, the fruits are very juicy and of excellent flavor. Finally, 'Tochigi i27' is more resistant to anthracnose, Fusarium wilt, and strawberry powdery mildew than 'Tochiotome'.
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