A durum wheat TILLING (targeting induced local lesions in genomes) population of 2601 M3 families was developed from cv. Svevo using ethyl methanesulfonate as a chemical mutagen. The entire M3 population was field-grown for phenotypic evaluations. Despite the polyploid nature of the wheat genome, a preliminarily phenotypic screening showed a high frequency of morphological alterations (∼22%); specific phenotyping for seed morphology was undertaken. Furthermore, a reverse-genetics experiment was performed on DNA collected from M2 leaves for the homoeologous genes SBEIIa-A and SBEIIa-B involved in starch metabolism. One non-sense mutation for both genes was identified; specific crosses are planned in order to pyramid the two mutations.
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13 January 2014
Development of a TILLING resource in durum wheat for reverse- and forward-genetic analyses
R. Bovina,
A. Brunazzi,
G. Gasparini,
F. Sestili,
S. Palombieri,
E. Botticella,
D. Lafiandra,
P. Mantovani,
A. Massi
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Crop and Pasture Science
Vol. 65 • No. 1
Jan 2014
Vol. 65 • No. 1
Jan 2014
forward-genetics
reverse-genetics
Svevo
tilling
Triticum durum