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The Influence of Colchicine on Initiation and Early Development of Adventitious Roots
Author(s) -
OPPENOORTH J. M.
Publication year - 1978
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1978.tb04099.x
Subject(s) - primordium , meristem , colchicine , phaseolus , biology , petiole (insect anatomy) , parenchyma , lateral root , botany , microbiology and biotechnology , biochemistry , arabidopsis , shoot , genetics , mutant , hymenoptera , gene
The first sign of adventitious root formation in the petiole of the primary leaves of Phaseolus vulgaris after treatment with IAA was the dedifferentiation of mature parenchyma cells next to strands of sieve elements and companion cells. Colchicine strongly inhibited this dedifferentiation. Treatment with colchicine 3 days after treatment with IAA, caused the groups of meristematic cells formed to grow by cell enlargement only. Groups of more than about 30 meristematic cells changed into recognizable root primordia during this growth. Groups with a smaller number of meristematic cells extended also in size but did not form a recognizable root primordium.