'Niigata S3' is a new strawberry cultivar suitable for forcing culture under low temperature and insolation conditions.
'Niigata S3' is a new strawberry (Fragaria × ananassa Duch.) cultivar that is early flowering and possesses high soluble solid content and good coloration. It was selected from a cross between Kei812 (seed parent) and 'Asuka-Ruby' (pollen parent). The first harvest date of 'Niigata S3' was December 27, 34 days earlier than 'Echigohime' and 9 days earlier than 'Asuka-Ruby' (means of 2007 and 2008). The marketable yield of 'Niigata S3' was 85% of 'Echigohime', 107% of 'Asuka-Ruby', while the early yield was 145% of 'Echigohime', 85% of 'Asuka-Ruby' (based on 2007 and 2008 means). The shape of the fruit is long conical, and its skin color medium-red. The fruit skin hardness of 'Niigata S3' was 31.5 g/mm(2), which was harder than 'Echigohime', and its average soluble solid content was 11.4%, which was higher than the values for 'Echigohime' and 'Asuka-Ruby' (2008). Furthermore, 'Niigata S3' did not bear apical overripe fruit. This new cultivar is adaptable to the climatic conditions of Niigata, as well as other regions that experience low winter temperatures and insolation.
Horticultural Research Center, Niigata Agricultural Research Institute , 177 Mano, Seiro, Niigata 957-0111 , Japan ; Graduate School of Science and Technology, Niigata University , 2-8050 Ikarashi, Nishi, Niigata 950-2181 , Japan.
Naonori
N
Hamato
Horticultural Research Center, Niigata Agricultural Research Institute , 177 Mano, Seiro, Niigata 957-0111 , Japan.
Osamu
O
Kotake
Horticultural Research Center, Niigata Agricultural Research Institute , 177 Mano, Seiro, Niigata 957-0111 , Japan.
Nagaaki
N
Ono
Horticultural Research Center, Niigata Agricultural Research Institute , 177 Mano, Seiro, Niigata 957-0111 , Japan.
Hiroshi
H
Kurashima
Graduate School of Science and Technology, Niigata University , 2-8050 Ikarashi, Nishi, Niigata 950-2181 , Japan.
Masaru
M
Nakano
Faculty of Applied Bioscience, Kanagawa Institute of Technology , 1030, Shimo-ogino, Atsugi, Kanagawa 243-0292 , Japan.
Yuzuri
Y
Iwamoto
Graduate School of Science and Technology, Niigata University , 2-8050 Ikarashi, Nishi, Niigata 950-2181 , Japan.
Yoshihiko
Y
Takahashi
breeding; early flowering; forcing culture; fruit quality