Understanding flower bud differentiation characteristics in the strawberry variety 'Fukuoka S6' and 'Toyonoka'
2018
Oku, K. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Sato, K. | Kitajima, N. | Mizukami, K. | Inoue, K.
We investigated flower initiation properties in a forcing culture of the strawberry variety 'Fukuoka S6' and 'Toyonoka'. Flower bud induction of the first axillary flower bunch has a big influence of day temperature from the middle of September to the beginning of October with both varieties, and the first axillary flower bunch was undifferentiated in 30/20℃, on the other hand differentiated in 30/15℃, and differentiated regardless of the pitch of night temperature under conditions of day temperature 25℃, and the time of flower bud induction of 'Fukuoka S6' was longer than that of 'Toyonoka'. In addition, the flower bud formation period after the second axillary flower was different in a variety, and the next flower bud formation of 'Fukuoka S6' was later than that of 'Toyonoka' and the number of leaves between flower cluster of 'Fukuoka S6' were easy to increase those of 'Toyonoka', because the flower bud induction of 'Fukuoka S6' was started until the vase formative period of former flower bud.
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