Morphogenetic processes in immature embryos of wheat (Triticum aestivum L.) were investigated using a molecular marker for meristematic cells of cereals (proliferative antigen of meristem initial cells, PAIC). The used genetic model comprised a series of almost isogenic lines of wheat alternative by the alleles of dwarfing genes (RhtB1c, RhtB1b, and Rht14) and the original cv. Saratovskaya 29. The Rht genetic system was found to affect the level of PAIC in the wheat callus cells during callus formation and subsequent regeneration. We found differences in the level of PAIC at certain stages of culturing and a general trend of its content in the course of callus formation and secondary differentiation in the callus tissue. Possible role of PAIC as a marker of meristematic centers within the callus tissue and the prospect of its use in breeding as an additional criterion for estimation of morphogenetic ability of the newly produced lines of wheat are discussed.
Russian Journal of Plant Physiology – Springer Journals
Published: Mar 20, 2007
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