Productivity and grain nutritional value traits in wheat genotypes with different NAM-B1 gene allelic variations

Abstract

The identification of a functional NAM-B1 allele associated with a high content of grain protein and essential microelements in wheat relatives increased the distant hybridization significance for bread wheat nutritional value. The allelic polymorphism of the NAM-B1 gene in 22 wheat lines with a genetic material of T. dicoccoides, T. dicoccum, T. spelta, T. kiharаe and their parental forms and the effects of NAM-B1 gene allelic variations on the content of grain protein and essential microelements and productivity traits (vegetation period 2017–2021) were evaluated. The functional NAM-B1 allele was identified only in the samples of wheat relatives among the parental forms. All parental varieties and most of introgressive lines (77.3 %) had a non-functional allele. The genotypes with the functional NAM-B1 allele were characterized by a higher plant height and tillering, but by lower spike productivity compared to the non-functional allele genotypes. The presence of the functional NAM-B1 allele provided a high level of grain protein and zinc content and never decreased significantly a thousand-kernel weight across all studied environments. The functional NAM-B1 allele introgression could be a resource for improving the grain wheat nutritional value.

On the anniversary of Academician Lyubov Vladimirovna Khotyleva

“…Под ее руководством проведены комплексные исследования в области частной генетики, биохимии, физиологии и селекции культурных растений: льна (Yurenkova et al, 1995;Muravenko et al, 2003;Yurenkova et al, 2005;Titok et al, 2006;Titok et al, 2010a;2010b;Rachinskaya et al, 2011;Lemesh et al, 2013;Galinousky et al, 2014;Pydiura et al, 2015;Galinousky et al, 2019;Galinousky et al, 2020a;2020b), тритикале (Khotyleva et al, 1977Khotyleva et al, 1986;Chayka et al, 1991;Leonova et al, 2005;Orlovskaya et al, 2012;Orlovskaya et al, 2015a;), кукурузы (Orlovskaya et al, 2015b;Orlovskaya et al, 2016a;2016b;Vakula et al, 2018a), пшеницы (Khotyleva et al, 1984Leonova et al, 2013;Orlovskaya et al, 2015c;Orlovskaya et al, 2018;Vakula et al, 2018b;Orlovskaya et al, 2020;Orlovskaya et al, 2021;Orlovskaya et al, 2022;Orlovskaya et al, 2023) и ряда овощных культур (Titok et al, 1995;Shapturenko et al, 2018).…”