@article{oai:repository.naro.go.jp:00001899, author = {増田, 哲男 and MASUDA, Tetsuo and 別所, 英男 and BESSHO, Hideo and 工藤, 和典 and KUDO, Kazunori and 猪俣, 雄司 and INOMATA, Yuji and 和田, 雅人 and WADA, Masato}, journal = {果樹研究所研究報告, Bulletin of the National Institute of Fruit Tree Science}, month = {Mar}, note = {A number of factors that affect the in vitro rooting of JM-rootstocks (JM1, JM2, JM5, JM7 and JM8) and three Controls (M0-84; Malus prunifolia Borkh. var. ringo Asami, strain M0-84, Morioka-seishi; Malus prunifolia Borkh. var. ringo Asami, strain Morioka-seishi, and M.9EMLA)have been examined. When the concentration of sugar was raised from 0 to 30g/l in a medium supplemented with 1/2 inorganic salts of MS medium and 0.1 mg/l IBA, the rate of root formation in the JM rootstocks and controls increased, except for M.9EMLA and JM2. The effect of sucrose concentration on the number of roots differed from the effect on the rate of root formation. With the exception of JM2, no influence of IBA concentration on the rate of root formation was observed in JM rootstocks and controls in a medium supplemented with 1/2 inorganic salts of MS medium and 30g/l sucrose. In JM2, the addition of IBA to the medium decreased the rate of root formation. There was no clear effect of IBA concentration on root number among the rootstocks. The rate of root formation in all JM rootstocks and controls decreased under high concentration of inorganic salts in the MS medium supplemented with 0.1 mg/l IBA and 30 g/l sucrose. Especially, the inhibition of root formation in JM2 was particularly noticeable. Similar effects of the concentration of inorganic salts were observed in both rate of root formatuion and root number. No influence of kind of sugar was observed the media supplemented with 1/2 inorganic salts of MS m edium, 0. 1  mg/I IBA and 30 g/1 sucrose, in JM rootstocks and controls expect for M.9EMLA, JM2 and JM8. However, the rate of root formation of M.9EMLA, JM2 and JM8 was clearly decreased by the usage of sucrose, fructose and glucose as a sugar of the rooting medium, respectively. Similarly, the number of JM8 and M.9EMLA roots was decreased by the usage of fructose and glucose, respectively. The most favorable combinations for rooting were 30 g/l sorbitol and 1/4 inorganic salts of MS medium for JM2, and 30 g/l sucrose and 1/4 inorganic salts of MS medium for JM8. These results suggest that the rooting performance of the JM-rootstocks depended on the kind of sugar, concentratuion of sugar and concentration of inorganic salts in the MS medium, and that the JM-rootstocks had high rooting potential than the control rootstocks.}, pages = {79--86}, title = {リンゴJM台木の in vitro における発根性}, volume = {5}, year = {2006}, yomi = {マスダ, テツオ and ベッショ, ヒデオ and クドウ, カズノリ and イノマタ, ユウジ and ワダ, マサト} }