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GrainGenes Reference Report: GNM-36-808

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Reference	GNM-36-808
Title	Nuclear gametophytic genes from chromosome arm 1RS improve regeneration of wheat microspore-derived embryos
Journal	Genome
Year	1993
Volume	36
Pages	808-814
Author	Henry Y [ Show all 6 ]
Abstract	The effect of the IRS chromosome arm from rye on plant regeneration from microspore-derived embryos was studied using anther culture technology with genotypes carrying the 1BL-1RS translocated chromosomes, the normal wheat chromosome 1BL-1BS, and ditelosomic lines DT 1BS and DT 1BL A significant difference was observed in microspore-derived green plants between chromosome structure concerned with 1RS and 1BS arms An analysis of the inheritance of the 1B-1R translocation was performed on the basis of the frequency of male gametes 1BL-1RS in the microspore-derived green plants and that of the 1B-1R translocation inherited through the pollen or the egg cell from structurally heterozygous hybrids 1BL-1BS/1BL-1RS Both the normal 1B and the translocated 1BL-1RS chromosomes were sexually transmitted through the pollen grains with the same frequency The 1BL-1RS chromosome is only transmitted through 45% of the egg cells On the contrary, two-thirds of the microspore-derived green plants regenerated from the anther culture experiments possess the translocated chromosome The involvement of the rye chromosome arm IRS from 'Aurora' on regeneration capacity of the microspore-derived embryos has been proposed through the effect of a 'gametophytic gene.
Keyword	[ Hide all but 1 of 10 ] anther-culture chromosome chromosome-transmission gene-location genes inheritance plant embryos regenerative-ability segregation triticum aestivum

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