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Leafy head formation of the progenies of transgenic plants of Chinese cabbage with exogenous auxin genes

查看全文 作  者:HE YU KE;WAN XIN XUE;YU DONG SUN;XU HONG YU;PING LIN LIU(Fax:021-64042090;E-mail: heyk@iris. sipp.ac.cn)(National Laboratory of Plant Molecular Genetics, ShanghaiInstitute of Plant Physiology, Chinese Academy of Sciences,Shanghai 200032, China) 高影响力作者 出  处:《Cell Research》索引2000年第10卷第2期,共10页高影响力期刊 摘  要:The experiment was performed to evaluate the progenies of plant lines transgenic for auxin synthesis genes derived from Ri T-DNA. Four lines of the transgenic plants were selfcrossed and the foreign auxin genes in plants of T5 generation were confirmed by Southern hybridization. Two lines, D1232 and D1653, showed earlier folding of expanding leaves than untransformed line and therefore had early initiation of leaf y head. Leaf cuttings derived from plant of transgenic line D1653 produced more adventitious roots than the control whereas the cuttings from folding leaves had much more roots than rosette leaves at folding stage, and the cuttings from head leaves had more roots than rosette leaves at heading stage. It is demonstrated that early folding of transgenic leaf may be caused by the relatively higher concentration of auxin. These plant lines with auxin transgenes can be used for the study of hormonal regulation in differentiation and development of plant organs nd for the breeding of new varietywith rapid growth trait. 关 键 词:大白菜 转基因植株 外源植物激素基因 后代 叶状结球形成 卷心
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