The selection of maize parent lines within marker assisted selection (MAS) by crtRB1-3'TE marker for Steppe zone of Ukraine
Laen...
Kuupäev
2023
Kättesaadav alates
Autorid
Prysiazhniuk, L.
Honcharov, Y.
Melnyk, S.
Kliachenko, O.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Maize has a large genotypic diversity and a broad scale of economically important
traits. Therefore, it is extremely important for breeding to obtain hybrids which can ensure high
yield even under severe growing conditions, such as in Steppe zone of Ukraine. This study aimed
to determine the optimal allele ratio by crtRB1-3'TE marker in parental components of maize
modified hybrids. There were investigated four hundred sixteen maize hybrids which are modified
hybrids of heterotic model (Iodent × Iodent) × Lancaster germplasm. SCA (specific combining
ability) effects for grain yield and grain moisture content were calculated in maize hybrids with
different allele combinations of crtRB1 gene. As results, the stable positive SCA effects were
calculated for hybrids with allele combination (296 bp + 875 bp) × 543 bp × 296+875 bp during
both 2019 and 2020 (1.23 and 0.99 t ha-1
, respectively). The lowest SCA effects for grain moisture
content were obtained for modified hybrids with allele combination (543 bp × 543) × 296 + 875 bp
both in 2019 and 2020 (-0.54 and -0.36%, respectively). The greatest influence SCA effects for
grain yield had the interaction of allele combinations and year weather conditions (39%),
the impact the allele combinations was 36%. The year weather conditions had the greatest impact
on SCA effects for grain moisture content (44%), the allele combination (36%). Thus,
it was determined that SCA effects for studied indicators of heterotic model
(Iodent × Iodent) × Lancaster under contrasting weather condition are resulted from both
genotypes of hybrid parents and favourable allele presence.
Kirjeldus
Received: January 31st, 2023 ; Accepted: April 10th, 2023 ; Published: April 14th, 2023 ; Correspondence: prysiazhniuk_l@ukr.net
Märksõnad
Zea mays L., carotenoids, crtRB1 gene, favourable allele, SCA effects, articles