Comparative Analysis Reveals Changes in Some Seed Properties in Amaranth Mutant Variety ‘Zobor’ (A. hypochondriacus × A. hybridus)

Abstract

The aim of our long-term research program is to improve the quality and quantity of amaranth production through mutation breeding using γ-radiation. In this paper, we present the characterization of the new variety ‘Zobor’ of A. hypochondriacus × A. hybridus developed by radiation-induced mutagenesis of hybrid K-433. Multiyear phenotypic characterization of an important yield parameter (1000-seed weight) showed that the studied mutant variety ‘Zobor’ has an advantage in seed weight over the nonirradiated control seeds of K-433 with predictable performance of this yield trait. ‘Zobor’ exhibited changes in seed morphometric parameters, starch particle size, and pasting properties with no change in amylose content and swelling power. Moreover, the seeds of ‘Zobor’ showed the significantly highest folate content among selected amaranth varieties. The mutant variety could, therefore, be interesting for the development of functional foods and as a low-management crop, attractive for cultivation in Europe.

Sborník Xlix. Konference O Jakosti Potravin a Potravinových Surovin

“…Hlavnou zložkou škrobu je amylopektín (65-85 %), podiel amylózy, ktorej zastúpenie ovplyvňuje silu napučiavania, rozpustnosť a želatinizačné podmienky škrobu, je 3-8% (Kong et al, 2008;. V prípade odrôd 'Pribina' a 'Zobor' bol obsah amylózy porovnateľný so všeobecne udávaným obsahom (3,8-4,5 %; Kečkešová, 2013;Hricová et al 2021). Pomerne nízke zastúpenie amylózy bolo zaznamenané aj u mrlíka (3,5-19,6%), u pohánky tvorí viac než polovicu z celkového množstva škrobu (57%; Alvarez-Jubete et al, 2010a;Christa and Soral-Śmietana, 2008).…”