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Uptake and distribution of manganese applied to leaves of Vicia faba (cv. Herzfreya) and Zea mays (cv. Regent) plants
Author(s) -
ElBaz Farouk K.,
Maier Peter,
Wissemeier Alexander H.,
Horst Walter J.
Publication year - 1990
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19901530415
Subject(s) - vicia faba , manganese , shoot , zea mays , horticulture , chemistry , biology , agronomy , botany , organic chemistry
Uptake and transport of Mn applied to leaves was studied in maize ( Zea mays cv. Regent) and horse bean ( Vicia faba cv. Herzfreya), two important crops in Egypt. Under controlled conditions in a growth chamber, maize and horse bean plants were grown in solution culture without Mn. After 20 days, Mn was applied to one older leaf by submerging part of the leaf blade into 0.1 mM MnSO 4 or MnEDTA solution for 48 h. At harvest (24 h later), plants were divided into fractions and Mn concentrations and contents determined. Plants without Mn application served as control. Only 1% of the Mn supply was taken up. Most of it remained at the application zone. However, part of the Mn moved out of the leaf of application and was preferentially transported to the shoot apex. This was indicated by a up to 2 times higher Mn concentration of the youngest leaf. When Mn was applied as MnEDTA, Mn uptake was lower but translocation enhanced compared to MnSO 4 . There were no consistent differences between the plant species although mobility of Mn seemed to be higher in maize. Although the amounts of Mn taken up and translocated were low, the results suggest that in these plant species, leaf‐applied Mn may contribute to the Mn nutrition of new growth.