As part of an international network, nine genotypes of perennial wheat obtained from crosses between Triticum aestivum and Thinopyrum (syn. Agropyron) spp were grown during two years of testing at Montelibretti (Rome) in 1.0 m-long rows arranged in a randomized complete block design with three replicates, and compared for their agronomical, technological and nutritional traits with conventional (annual) wheat cvs Wedgetail and Enesco. All nine experimental entries demonstrated some capacity of post-sexual-cycle regrowth (PSCR) and produced grain in two successive years. The experimental genotypes were highly polymorphic, produced soft or medium-hard kernels and showed lateness of ear emergence, small kernel size, low density ears, high number of tillers and high level of disease resistance. Compared with cvs Wedgetail and Enesco, the perennial germplasm exhibited low percentage of hull-less kernels, high protein content, reduced SDS-sedimentation volume, high content of bioactive compounds 5-n-alkylresorcinols and soluble polyphenols, and increased amounts of yellow pigments and resistant-starch. The poor gluten quality of the perennial lines appeared to be associated with a high proportion of gliadins, and with the presence of unusual HMW glutenin subunits inherited from Thinopyrum elongatum. The presence of genotypes with high PSCR indexes, desirable agronomic attributes and high levels of bioactive compounds suggests a potential to breed and select for perennial wheat genotypes with superior commercial and nutritional characteristics.
|Autori:||Pogna, N.E.;Galassi, E.;Ciccoritti, R.;De Stefanis, E.;Sgrulletta, D.;Cacciatori, P.;Crespi, P.;Palombi, M.R.;Gazza, L.;Bozzini, A.|
|Data di pubblicazione:||2013|
|Titolo:||Caratteristiche agronomiche, tecnologiche e nutrizionali di linee di grano perenne coltivate in Italia|
|Appare nelle tipologie:||1.1 Articolo in rivista|