Abstract
From hypocotyls of 6, 7, or 8 days old castor bean seedlings which in situ start to develop an interfascicular cambium on the 11th or 12th day, strips of interfascicular tissue were separated from adjacent vascular tissue by means of radially inserted metal blades or were excised and cultured in a basal medium containing mineral salts and sucrose. Since under these conditions cambial development proceeded normally, it is concluded that the vascular tissue does not supply the parenchymatous cells of the interfascicular tissue with a specific inductive factor. Addition of IAA, GA3, or kinetin to the medium enhanced development. It is argued that this is not the consequence of chemical substitution for a stimulatory influence from the adjacent vascular tissue, but rather a compensation for (i) production of growth substances by the dividing cambial cells, partially leaking out under the conditions of the culture, or for (ii) stimulatory substances originating in vivo from the apical parts of the plants.
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Claims 6
Claim · model-written summary
Cambial development proceeded normally in isolated or cultured interfascicular tissue.
Verbatim
e0“Since under these conditions cambial development proceeded normally”
t0“RICINUS COMMUNIS L.”
Claim · model-written summary
Vascular tissue was concluded not to supply a specific inductive factor for interfascicular cambial development.
Verbatim
e0“it is concluded that the vascular tissue does not supply the parenchymatous cells of the interfascicular tissue with a specific inductive factor”
t0“RICINUS COMMUNIS L.”
Claim · model-written summary
IAA enhanced development.
Not reportedComparator
Verbatim
e0“Addition of IAA, GA3, or kinetin to the medium enhanced development”
t0“RICINUS COMMUNIS L.”
Claim · model-written summary
GA3 enhanced development.
Not reportedComparator
Verbatim
e0“Addition of IAA, GA3, or kinetin to the medium enhanced development”
t0“RICINUS COMMUNIS L.”
Claim · model-written summary
Kinetin enhanced development.
Not reportedComparator
Verbatim
e0“Addition of IAA, GA3, or kinetin to the medium enhanced development”
t0“RICINUS COMMUNIS L.”
Claim · model-written summary
Growth substance additions were argued to compensate for leakage from dividing cambial cells or substances originating from apical parts.
Verbatim
e0“a compensation for (i) production of growth substances by the dividing cambial cells, partially leaking out under the conditions of the culture, or for (ii) stimulatory substances originating in vivo from the apical parts of the plants”
t0“RICINUS COMMUNIS L.”
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See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.