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Transport of 14 C‐Sucrose and 14 C‐Benzyl Adenine in Winter Wheat ( Triticum aestivum L.) in the Pre‐Anthesis Period
Author(s) -
Borkovec V.,
Procházka S.,
Ibrahim M. El.D.
Publication year - 1990
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1990.tb00855.x
Subject(s) - anthesis , cultivar , sucrose , poaceae , zeatin , agronomy , botany , biology , chemistry , horticulture , cytokinin , auxin , biochemistry , gene
The transport and distribution of 14 C‐sucrose and 14 C‐BA were studied in internode segments with ear of two winter wheat cultivars with a different mass of kernels in the period prior to anthesis. Both labelled substances were transported intensively into all the developing parts of the car, namely the rachis became the main site of 14 C‐BA accumulation. While the difference in the transport of l4 C‐sucrose among the cultivars was not unambiguous, a more intensive transport of 14 C‐BA was observed in the cultivar with a simultaneously higher mass of 1000 kernels. The higher level of zeatin and zeatin riboside in kernels detected in this cultivar suggested that in the period before anthesis it could accumulate (due to intensive transport, probably from the roots) an important part of cytokinins, available for the early stages of kernel development.