Mutant alleles of Photoperiod-1 in wheat (Triticum aestivum L.) that confer a late flowering phenotype in long days.

ABSTRACT: Flowering time in wheat and barley is known to be modified by mutations in the Photoperiod-1 (Ppd-1) gene. Semi-dominant Ppd-1a mutations conferring an early flowering phenotype are well documented in wheat but gene sequencing has also identified candidate loss of function mutations for Ppd-A1 and Ppd-D1. By analogy to the recessive ppd-H1 mutation in barley, loss of function mutations in wheat are predicted to delay flowering under long day conditions. To test this experimentally, introgression lines were developed in the spring wheat variety 'Paragon'. Plants lacking a Ppd-B1 gene were identified from a gamma irradiated 'Paragon' population. These were crossed with the other introgression lines to generate plants with candidate loss of function mutations on one, two or three genomes. Lin

SUBMITTER: Shaw LM 

PROVIDER: S-EPMC3828349 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature