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.
The recrystallization temperatures of solution treated and normalised alloys were determined by X-ray method. In the case of Al-Ag, solution treated alloy did not recrystallize up to the temperature of the solubility limit, but that of normalised alloy is not so high. In the case of Al-Cu, the effects of solution treatment on the recrystallization temperature are not so marked. The relation between the plane of precipitation of the precipitant and the slip plane is different from each other of the two alloy systems; the resistance being about the same as that due to the resistance of the precipitant to the recrystallization (Received July 28, 1958) Table 1 Chemical composition of specimens.
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