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Qtl analysis of western corn rootworm resistance traits in maize IBM population grown in continuous maize
Ist Teil von
Genetika (Beograd), 2020, Vol.52 (1), p.137-148
Erscheinungsjahr
2020
Link zum Volltext
Quelle
EZB-FREE-00999 freely available EZB journals
Beschreibungen/Notizen
The western corn rootworm (Diabrotica virgifera virgifera LeConte; WCR) is
the most destructive maize pest in the USA, and one of the most dangerous
pests in Europe. In just over a decade from the introduction it became one
of the most serious pests in Croatia. Native resistant cultivars could be an
efficient strategy for WCR control. Although research in WCR host plant
resistance has continuously been conducted for over 70 years, no resistant
maize hybrid is commercially available today. The aim of this study was to
evaluate resistance traits in the maize IBM intermated recombinant inbred
lines (IRILs), and detect QTLs associated with resistance to WCR herbivory.
Total of 207 recombinant inbred lines were phenotyped for standard WCR
resistance traits. Several associated QTLs were detected on chromosomes 1,
5, 6, 8, 9, and 10. QTLs on chromosomes 1 (6.41 % variance explained), and 6
(9.26 % variance explained) were mapped in regions harboring genes connected
with plant defense against herbivory. Detected QTLs provide relevant
guidelines for future research on WCR resistance in maize.
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