Clonal analysis of the development of the barley (Hordeum vulgare L.) leaf using periclinal chlorophyll chimeras

摘要: Barley seedlings that show mosaic expression of chlorophyll were selected from the progenies mutagenized seeds. The sectored plants grown under conditions lead to formation lateral tillers, and a fraction these had different kinds leaf variegation. These sectorially periclinally chimeric shoots used analyze cellular organization barley shoot apex clonal development leaf. is organized in two cell lineages, L1 L2. As well as giving rise epidermis, layer contributes mesophyll, particularly at margins, but, on adaxial side laminae, also more central positions. alone responsible for hood, flower homologue structure present strains homozygoous dominant allele K (hooded ) locus. relative contribution L2 decreases younger tillers during tiller basal flag Chimerism was generated by non-transmissible somatic events or nuclear mutations.