Estimation of Temporal Allele Frequency Changes in Ryegrass Populations Selected for Axillary Tiller Development
作者： G. Brazauskas , I. Pašakinskienė , T. Lübberstedt
DOI: 10.1007/978-94-007-4555-1_10
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摘要: The effects of selection on allele frequency at five genes with putative effect shoot morphology were examined in two perennial ryegrass (Lolium perenne L.) populations undergoing recurrent selection. A synthetic C0 population was created by intercrossing unrelated genotypes within the EU FP5 project ‘GRASP’. Two rounds (both positive and negative) for axillary tiller formation performed, leading to selected C1 + −, respectively. mean number tillers per plant 2.18, 3.90 0.22 C0, Five putatively involved control architecture hormone response SNP genotyped all three populations. test selective neutrality (Waples’ test), which tests hypothesis genetic drift versus selection, applied. This indicated gene LpIAA1 where changes could not be explained alone (p < 0.05). belongs a large family genes, called Aux/IAA, comprises that are auxin-regulated shown Arabidopsis rice.
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