Effect of homoeologous pairing Ph 1 - locus of Triticum aestivum L. on its F1 - bridge hybrids with the species (2x, 4x, 6x) Triticum L., (2x, 4x) Aegilops L., and (2x, 4x) Lolium L. genera .
Józef Pilch
Plant Breeding and Acclimatization Institute (IHAR), 30-420 Cracow, Zawila 4 (Poland) (Poland)
Abstract
Mono-5B Chinese Spring, mono-5B Jara, mono -5B Favorit exhibiting the deficiency of 5B-chromosome, the mutant –Ph Chinese Spring (ph1b, ph1b), mono-5A Chinese Spring, mopno-5D Chinese Spring with the genotype Ph1, Ph1 and the varieties Chinese Spring, Jara, Favorit with the genotype Ph1Ph1 were used in the crosses with 7 species of Triticum, 5 species of Aegilops and one species of Lolium genera to investigate the effect of the Ph1- locus on F1- bridge hybrids. Altogether, 117 cross-combinations were made and 98 259 florets were pollinated. The effectiveness of the locus Ph 1 was judged by the percentage of seed set of F1- bridge hybrids. Wide variation of seed set was observed in F1-bridge hybrids for all cross-combinations made...
Keywords:
gene ph1b, homoeologous pairing system, locus Ph1, 5B-, 5A-, 5D-chromosome monosomics, related species, Triticum aestivum L.Authors
Józef PilchPlant Breeding and Acclimatization Institute (IHAR), 30-420 Cracow, Zawila 4 (Poland) Poland
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