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Molecular characterization of durum wheat backcross inbred lines derived from var. dicoccoides
No full textMolecular characterization of durum wheat backcross inbread lines derivad fron var. dicoccoides
No full textThe backcross inbred line method for the introgression and detection of QTLs in durum wheat. In:C. Marè, P.Faccioli and A.M. Stanca (Eds)
No full textValutazione di una collezione di frumenti selvatici per contenuto proteico e resistenza a malattie fungine. In: Girolamo Russo (Ed)
No full textValutazione della qualità di semole rimacinate usate nella produzione di pani tradizionali. In: R. Cubadda e E.Marconi (eds)
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QTL CLUSTER FOR GRAIN SIZE AND PHENOLOGY TRAITS REVEAL CANDIDATE GENES INVOLVED IN GRAIN YIELD OF DURUM WHEAT
No full textGrain yield (YLD) reflects the combination of thousand kernels weight (TKW)
and grain number per area. TKW is mainly and tightly underpinned by grain
length (GL), grain width (GW) and area (AREA). YLD can be maximized by
growing varieties which heading time (HT) allows the crop to avoid stresses
during grain-filling phase. HD is a critical stage that marks the
transition into the grain-filling period, during which grain weight is
defined.
In the present study, a high-density genetic linkage map based on iSelect
90K SNP markers was realized using the durum wheat Liberdur x Anco Marzio
recombinant inbred line (RIL) population that was evaluated to detect QTL
and candidate genes controlling YLD, GL, GW, AREA, HT and plant height
(PH).
The two parents showed significant differences for HT, PH, AREA in all
three seasons, and for TKW, GL and GW in two trials. The parental Anco
Marzio has generally larger grains compared to those of Liberdur, which
were narrower. High heritability values, exceeding 0.55, were found for HT,
GL and AREA while TKW heritability values ranged from 0.45 to 0.72
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