The Translocation of 14C-Sucrose and 14C-Benzyl Adenine in Winter Wheat (Tritkum aestivum L.) in the Period of Kernel Formation

The transport and distribution of ^14C-sucrose and ^14C-BA were studied in internode segments with ear of two winter wheat cultivars with a different mass of kernels in the period of kernel formation. While ^MC-sucrose was transported and accumulated intensively in the developing ear, ^14C-BA was transported much less and only a small part of it was found in the ear. With the ear development the accumulation of both ¹⁴C-sucrose and ¹⁴C-BA in the ear increased but the ¹⁴C-BA distribution pattern (ratio of the internode/kernel and the rest of the ear) did not change significantly. In the period of one to two weeks after anthesis the accumulation of ¹⁴C-sucrose and ¹⁴C-BA was higher in the kernels of the Slavia cv., i.e. in the cultivar with a higher mass of kernels.