Leaf angle of maize is a fundamental determinant plant architecture and an important trait influencing photosynthetic efficiency crop yields. To broaden our understanding the genetic mechanisms leaf formation, we constructed F 3:4 recombinant inbred lines (RIL) population to map QTL for angle. The RIL was derived from cross between model line (B73) with expanded elite (Zheng58) compact architec...

Grain number is a major trait for wheat yield under dryland farming. An International Triticeae Mapping Initiative (ITMI) mapping population comprising 105 recombinant inbred lines (RIL) developed from a cross between a Synthetic hexaploid wheat (Triticum aestivum) 'W7984' and a spring wheat variety 'Opata M85' was used to identify quantitative trait loci (QTL) associated with grain number per ...

The root-lesion nematodes Pratylenchus neglectus and P. thornei are economically damaging pathogens of wheat in the Pacific Northwest (PNW). Growing resistant and tolerant varieties is the best approach to minimize yield loss. All PNW wheat varieties were found to be susceptible. Crosses were made between the PNW-adapted varieties (Alpowa Louise, Otis) and the Australian wheat GS50a with resist...

In this paper we present a novel approach to quantifying genetic architecture that combines recombinant inbred lines (RIL) with line cross analysis (LCA). LCA is a method of quantifying directional genetic effects (i.e. summed effects of all loci) that differentiate two parental lines. Directional genetic effects are thought to be critical components of genetic architecture for the long term re...

Abstract Drought is a major concern among abiotic stresses in wheat ( Triticum aestivum L.) production. Breeding resistant cultivars are the most effective means to manage drought stress. F 6 recombinant inbred lines (RIL) derived from cross of Berkut/Worrakatta were used identify quantitative trait loci (QTL) for tolerance at germination stage under treatment PEG6000 using 50 K single nucleoti...

In this study, a Glutinous rice 89-1 (Gr 89-1) × Shuhui 527 recombinant inbred line population (RIL) comprising 309 F9-generations was used to screen gradient molecular markers. The phenotypic variation and distribution of eight agronomic traits obtained from multiyear multilocation samples, as well the network expression relationships between markers, were investigated. results showed that the...

A total of forty-nine recombinant inbred lines were evaluated for 16 traits using simple lattice design. All the measured over locations showed highly significant differences among except fertile tiller per plant, while x location interaction effect was most measured. Grain yield highest phenotypic coefficients variation (PCV) (26.36%) followed by above ground biomass (23.16%), remaining low (&...

QTL (quantitative trait loci) mapping is commonly used to identify genetic regions responsible to important phenotype variation. A common strategy of QTL mapping is to use recombinant inbred lines (RILs), which are usually established by several generations of inbreeding of an F1 population (usually up to F6 or F7 populations). As this inbreeding process involves a large amount of labor, we are...

Wheat cultivar VL Gehun 892 has shown a high level of resistance against Australian Puccinia striiformis f. sp. tritici (Pst) pathotypes. In this study, it was crossed with Westonia, susceptible wheat cultivar, and digenic segregation observed in the derived population Pst pathotype 134 E16A+Yr17+Yr27+. Single-gene recombinant inbred line (RIL) populations were developed from F3 families (VL 89...