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Genetic Analysis of Pre-Harvest Sprouting Resistance in a Wheat x Spelt Cross

Silvia Zanettia, Michael Winzelera, Martin Kellerb,c, Beat Kellerb,c and Monika Messmerd

a Swiss Federal Research Station for Agroecology and Agriculture (FAL) Zürich-Reckenholz, Reckenholzstr. 191, CH-8046 Zürich, Switzerland
b Institute of Plant Sciences, Swiss Federal Institute of Technology (ETH), Universitätstr. 2, CH-8092 Zürich, Switzerland
c Institute of Plant Biology, Univ. of Zürich, Zollikerstr. 107, CH-8008 Zürich, Switzerland
d Pharmaceutical Institute, Univ. of Basel, Benkenstr. 254, CH-4108 Witterswil, Switzerland



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Fig. 1 Distribution of (A) falling number and (B) {alpha}-amylase activity of the 226 recombinant inbred lines (RILs) derived from the cross Forno x Oberkulmer averaged over four environments (overall) and in two single environments (Fal96 and Ros97). Falling number and {alpha}-amylase activity of Fal96 versus the corresponding values of Ros97 are illustrated in C and in D, respectively. Falling number versus {alpha}-amylase activity in Fal96 and Ros97 are shown in E and F, respectively. The parental means are illustrated by squares (Forno) and by triangles (Oberkulmer). The means of the seven wheat and 11 spelt standards are indicated with a dotted squares and dotted triangles, respectively

 


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Fig. 2 Location of significant (LOD>3.0) QTL for falling number (FN, triangles at the right side of the chromosomes) and for {alpha}-amylase activity (AA, triangles at the left side of the chromosomes) on the genetic map of 204 recombinant inbred lines derived from the cross Forno x Oberkulmer averaged across four environments. Filled and striped triangles indicate that the favorable allele was inherited from Oberkulmer (Ok) or from Forno (Fo), respectively. The triangle size reflects the explained phenotypic variance (R2) by a single QTL. Asterisk indicate that the specific genomic region is also involved in the phenotypic expression of ear length

 





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