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Somatic chromosome numbers of colchicine-treated Shinano walnut (Juglans regia L.) and its F1 seedlings



Somatic chromosome numbers of colchicine-treated Shinano walnut (Juglans regia L.) and its F1 seedlings



Journal of the Japanese Society for Horticultural Science 65(4): 677-683



Shoots of Shinano walnut Mituru (the main cultivar grown in Nagano prefecture) which is a putative hybrid between Teuchi walnut (Juglans regia var. orientis) and Persian walnut (J. regia), were treated in 1970 with 0.4% colchicine solution containing 1 p.p.m. NAA. Scions from colchicine-treated Mituru trees, known as Col-Mituru, were grafted on several rootstocks and grown to maturity. Col-Mituru trees were then self- and open-pollinated.

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