Open AccessQtl analysis of western corn rootworm resistance traits in maize IBM population grown in continuous maize
Author(s) -
Andrija Brkić,
Domagoj Šimić,
Antun Jambrović,
Zvonimir Zdunić,
Tatjana Ledenčan,
Emilija Raspudić,
Mirjana Brmež,
Josip Brkić,
Maja Mazur,
Vlatko Galić
Publication year - 2020
Publication title -
genetika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 15
eISSN - 1820-6069
pISSN - 0534-0012
DOI - 10.2298/gensr2001137b
Subject(s) - western corn rootworm , biology , agronomy , pest analysis , inbred strain , quantitative trait locus , resistance (ecology) , population , cultivar , zea mays , horticulture , gene , genetics , demography , sociology
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.