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CHANGES OF ENDOGENOUS HORMONE CONTENTS DURING FLORAL BUD AND VEGETATIVE BUD DIF FERENTIATION IN THIN CELL LAYER CULTURE OF CICHORIUM INTYBUS L. EXPLANT 被引量:10
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作者 李颖章 韩碧文 《Acta Botanica Sinica》 CSCD 1996年第2期131-135,共5页
The sectioned thin cell layers (TCL) of flower stalk of Cichorium intybus L. were cultured in MS medium supplemented with NAA and BA or IAA and BA where floral and vegetative buds were developed from the explant. ... The sectioned thin cell layers (TCL) of flower stalk of Cichorium intybus L. were cultured in MS medium supplemented with NAA and BA or IAA and BA where floral and vegetative buds were developed from the explant. Endogenous IAA, DHZ+DHZR, iPA increased significantly during the floral bud formation, while Z+ZR remained changed. The levels of cytokinins, DHZ+DHZR, iPA, and Z+ZR all increased significantly during the vegetative bud formation, however IAA level was reduced during the first 7 days of culture and increased to two thirds of initial values on the day when the bud primordia were formed. The results suggested that the initiation of floral buds was associated with a high IAA/CTK ratio, whereas the induction of vegetative bud differentiation was related to a low IAA/CTK ratio. 展开更多
关键词 Thin cell layer Cichorium intybus floral buds formation Vegetative bud formation Phytohormone
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