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EFFECT OF PICLORAM ON TRANSPORT IN YOUNG BEAN, MESQUITE, AND HUISACHE PLANTS
Author(s) -
Leonard O. A.,
Glenn R. K.,
Bayer D. E.
Publication year - 1972
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1972.tb10072.x
Subject(s) - picloram , phaseolus , biology , shoot , acacia , botany , prosopis , horticulture
The effect of 4‐amino,3,5,6‐trichloropicolinic acid (picloram) on transport from leaves to the roots was studied using young bean (Phaseolus vulgaris L.), mesquite (Prosopis juliflora var. velutina (Woot.) Sarg.), and huisache ( Acacia farnesiana (L) Willd.) plants. The only picloram treatments which were effective in enhancing transport of 14 C‐assimilate or 14 C‐picloram to the roots were those made to the shoots or roots one day or more before application of the label to the shoots. The enhancement of transport was not evident when un‐labeled picloram or 2,4,5‐trichlorophenoxyacetic acid (2,4,5‐T), or both, were applied at the same time as the 14 C‐label. Enhancement of transport was to the more mature stem or root tissues. Inorganic nitrogen applied to nitrogen‐deficient bean plants also increased transport of 14 C‐assimilate to the roots, especially the rate.