Inheritance of some Mendelian factors in intra- and interspecific crosses between Setaria italica and Setaria viridis

Abstract

The inheritance of seed coat color, pericarp color, polyphenoloxidase activity and bristle, glume, collar, and leaf-base anthocyanic colorations was investigated using intra- and interspecific crosses between Setaria italica and S. viridis. The results were compared to inheritance results obtained by previous authors. In most cases, the inheritance is simple (one or two loci) and data from different crosses (intra- and interspecific) and from different authors can be compared. Two sets of two characters were found to share common loci: the polyphenoloxidase locus is one of the loci responsible for seed coat color, and bristle and glume color are determined by the same two loci. The evolutionary significance of these results is discussed.

Genetic analysis of NEKODE1 gene involved in panicle branching of foxtail millet, Setaria italica (L.) P. Beauv., and mapping by using QTL-seq

“…We designated the gene symbol for this trait of our material as NEKODE1, a dominant allele. Segregation ratio of the red stem to green stem in Cross 1 was 151:41, and it fitted the expected segregation ratio of 3:1 (v 2 = 1.68 \ v 0.05.1 2 = 3.84) and coincided with previous reports (Cherisey et al 1985;Till-Bottraud and Brabant 1990;Sato et al 2013). The segregation ratio of normal to spikelet-tipped bristles (stb) in Cross 1 was 147:44 and fitted the expected value of 3:1 (v 2 = 1.68 \ v 0.05.1 2 = 3.84) as reported by Ayyangar et al (1933) and Sato et al (2013).…”

“…We scored tip-branched panicles as ''NEKODE'' and normal types as ''normal'' after heading. We also investigated segregation of stem color (green or red; Cherisey et al 1985;Till-Bottraud and Brabant 1990) and spikelet-tipped bristles (stb: Sato et al 2013) in the F 2 progeny derived from Cross 1 and anther color (Li et al 1945;Kihara 1943) in the F 2 progeny derived from Cross 2 and investigated linkages between NEKODE and these traits.…”

Polyphenol oxidase as a biochemical seed defense mechanism

“…Genetic studies are also consistent with PPO contributing to defense on the extrinsic surfaces of the seed: PPO activity and darkening of seed coat were strongly associated in recombinant inbred lines of pinto bean ( Phaseolis vulgaris L.; Marles et al, 2008 ) and PPO was strongly associated with dark color of lemma and palea in Setaria spp. ( Till-Bottraud and Brabant, 1990 ).…”