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ACCESSIONPLANT NAMETAXONOMYORIGINGENEBANKIMAGEAVAILABILITYRECEIVEDSOURCE TYPESOURCE DATECOLLECTION SITECOORDINATESELEVATIONHABITATIMPROVEMENT LEVELNARRATIVE
0GSHO 575sgh1.aHordeum vulgare L. subsp. vulgare Colorado, United StatesNSGCKERNELS1994DONATED05/1994Genetic materialThe sh1.a allele conditions a highly spring habit (grade 1) and plants readily form ear primordia under long-day conditions without prior cold treatment. However, the type cultivar, Iwate Mensury C, and some other cultivars, which are homozygous for the sgh1.a allele, behave as a winter type when sown in the fall (short-day condition). When near-isogenic lines for growth habit were grown at Kurashiki, Japan, the sgh1.a allele had little influence maturity of phenotype in the presence of the other spring habit growth genes. Cultivars having only the sgh1.a allele for spring habit are rare. The sgh1.a allele is found rarely in spring barley cultivars from Tibet. Inheritance: Monofactorial recessive. Located in chromosome 4HL, about 5.1 cM distal from the Hsh (hairy leaf sheath) locus. Previous nomenclature and gene symbolization: Light sensitiveness=ls. Spring habit of growth 1=sh1. Mutational events: sgh1.a in many cultivars in the so-called Occidental region, and in most cases sgh1.a is accompanied by the dominant allele at the Sgh2 (spring growth habit 2) locus. Mutant used for description and seed stocks: sgh1.a in Iwate Mensury C (OUJ308, GSHO 575); sgh1.a in Hayakiso 2 (OUJ064)*11; sgh1.a in Dairokkaku 1 (OUJ645)*11.1512391GSHO 575