Identification of powdery mildew resistance QTL in Fragaria x ananassa
Identification of powdery mildew resistance QTL in Fragaria x ananassa
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草莓抗白粉病QTL鉴定
DOI:
10.1101/196485
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Cockerton H
中科院分区:
文献类型:
--
作者:
Cockerton H
The obligate biotrophic fungusPodosphaera aphanisis the causative agent of powdery mildew on cultivated strawberry (Fragaria x ananassa). Genotypes from two bi-parental mapping populations ‘Emily’ x ‘Fenella’ and ‘Redgauntlet’ x ‘Hapil’ were phenotyped for powdery mildew disease severity in a series of field trials. Here we report multiple QTL associated with resistance to powdery mildew, identified in ten phenotyping events conducted across different years and locations. Seven QTL show a level of stable resistance across multiple phenotyping events however many other QTL were represented in a single phenotyping event and therefore must be considered transient. One of the identified QTL was closely linked to an associated resistance gene across the wider germplasm. Furthermore, a preliminary association analysis identified a novel conserved locus for further investigation. Our data suggests that resistance is highly complex and that multiple additive sources of quantitative resistance to powdery mildew exist across strawberry germplasm. Implementation of the reported markers in marker-assisted breeding or genomic selection would lead to improved powdery mildew resistant strawberry cultivars, particularly where the studied parents, progeny and close pedigree material are included in breeding germplasm.Key MessagePowdery mildew resistance in two strawberry mapping populations is controlled by both stable and transient novel QTL of moderate effect. Some transferability of QTL across wider germplasm was observed.
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DOI:
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1987
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通讯作者:
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1965
期刊:
Canadian Journal of Microbiology (print)
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1997
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发表时间:
2007
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作者:
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通讯作者:
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