Breeding of New Everbearing Strawberry Cultivars, ‘Natsuakari’ and ‘Dekoruju’

Abstract

New everbearing strawberry cultivars, 'Natsuakari' and 'Dekoruju' for summer and autumn production were registered in 2007. 'Natsuakari' was selected from hybrid seedlings between a female parent 'Summerberry' (everbearing) and a male parent 'Kitanokagayaki' (June-bearing). The fruits of 'Natsuakari' are very tasty and sweet. Its taste is superior to any other everbearing cultivars and is as good as high quality June-bearing cultivars. Its fruit shape is uniform and storability is high. The berry is suitable for strawberry cakes, and for fresh eating also. 'Natsuakari' is adapted not only to summer-autumn production but also to forcing culture. 'Dekoruju' was selected from hybrid seedlings between a female parent 'Pajaro' (June-bearing) and a male parent 'Morioka No. 26' (everbearing). Since the fruits of 'Dekoruju' are very firm, their storability is very high. The fruits are uniform, very shiny and tasty. The berry is suitable for strawberry cakes. 'Dekoruju' has field resistance to powdery mildew. It is adapted to summer-autumn production in cool climate regions. Seedlings of 'Natsuakari' and 'Dekoruju' are available from seed companies in Japan.

Physicochemical and Health Promoting Properties of Everbearing Strawberry Cultivar, ‘Dekoruju’ Berries

“…An eating quality was good and berries had a favorable balance of sweetness and acidity (sourness), as mentioned later because of higher sugar-acid ratio of berries. It seemed that taste was superior among other everbearing strawberry cultivars (Nagai et al, 2014;Okimura et al, 2011). Firmness of berries was observed and was fairly higher than other everbearing strawberry cultivars, 'Natsuakari' and 'Summerberry' (Okimura et al, 2011), suggesting high storability and transportability of berries.…”

“…It seemed that taste was superior among other everbearing strawberry cultivars (Nagai et al, 2014;Okimura et al, 2011). Firmness of berries was observed and was fairly higher than other everbearing strawberry cultivars, 'Natsuakari' and 'Summerberry' (Okimura et al, 2011), suggesting high storability and transportability of berries. It is known that firmness of berries is influenced by pectin of cell wall polysaccharides in plants (Watkins et al, 1999).…”

“…An everbearing strawberry cultivar, 'Dekoruju' was selected from hybrid seedlings between a female parent 'Pajaro' (June-bearing strawberry cultivar) and a male parent 'Morioka No.26' (everbearing strawberry one) and was registered in 2007 (Okimura et al, 2011). However, as far as we know, there is still lacking of scientific information about nutritional and functional values in these berries.…”

Characterization and functional properties of new everbearing strawberry (Fragaria x ananasa Duch.) cultivar, ‘Summertiara’ berries

“…The sugar-acid ratios also were calculated to 9.86, 10.28, and 17.39, respectively. On the other hand, Okimura et al [29] measured the contents of sugars and acid in new everbearing strawberry cultivars, 'Natsuakari' and 'Dekoruju', and 'Summerberry' as a female parent of 'Natsuakari'. As a result, these sugar contents (Brix%) were as follows: 8.7, 8.4, and 8.7%, respectively.…”