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  • 1 Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Crop Sciences, H-4032 Debrecen, Böszörményi út 138, Hungary
  • | 2 Institute of Plant Protection, H-4032 Debrecen, Böszörményi út 138, Hungary
  • | 3 Hungarian Academy of Sciences, H-1022 Budapest, Herman Ottó u. 15.
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The concentration (in mg kg–1 fresh weight) of two main hydroxamates, 2,4-dihydroxy- 7-methoxy-1,4-benzoxazin-3-one (DIMBOA) and 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA), and their temporal changes were simultaneously investigated using HPLC analysis in the leaves and roots of five Pioneer® maize (Zea mays L.) hybrids to select hybrids with higher hydroxamate contents. Although significant differences were found among hybrids in leaves, youngest leaves and roots, none of them showed unambiguously higher hydroxamate contents. However, the age of the organs and the plants significantly affected hydroxamate content. DIMBOA content of leaves decreased with increasing organ and plant age. DIBOA content varied among the hybrids, but generally decreased in the initial phase and then increased. In the roots, DIMBOA content decreased during the 21-day study and although DIBOA content did not show a clear temporal tendency, differences among hybrids were detected. According to current results, hydroxamate content temporally decreases in hybridspecific patterns, which should be considered when establishing a proper sampling time frame.

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Cereal Research Communications
Language English
Size B5
Year of
Foundation
1973
Volumes
per Year
1
Issues
per Year
4
Founder Akadémiai Kiadó
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Address
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Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
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ISSN 0133-3720 (Print)
ISSN 1788-9170 (Online)