Anatomical changes induced by picloram in plants of Acroptilon picris (Pall.) Fisch. et Mey

Mikhno, A.N.; Kalinin, F.L.; Lesnevich, L.A.

Botanicheskii Zhurnal 63(11): 1632-1635


ISSN/ISBN: 0006-8136
Accession: 000597309

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A. picris [=Centaurea repens] was sprayed at the bud formation stage with Tordon-22K (picloram-potassium) at 1 kg/ha. The leaves and stems were sampled 5-10 days after treatment and the roots after 3 and 12 months. Picloram effected most changes in actively growing tissue, retarding cell division in the procambium and cambium zones and also causing elongation of cells in some tissues and the destruction of secondary cell walls in others, eventually leading to the death of the plants.