Home About Browse Search
Svenska


QTL Mapping for resistance to early blight in a tetraploid potato population

Ortiz Rios, Rodomiro Octavio and Odilbekov, Firuz and Selga, Catja and Chawade, Aakash and Liljeroth, Erland (2020). QTL Mapping for resistance to early blight in a tetraploid potato population. Agronomy. 10 , 728 , 1-14
[Journal article]

[img] PDF - Published Version
Available under License Creative Commons Attribution.

1MB

Abstract

Early blight of potato, caused by Alternaria solani, is an economically important foliar disease in most potato-growing regions. Growing cultivars with higher levels of resistance to early blight can reduce tuber yield losses and the need for fungicide applications. In this research, a bi-parental tetraploid potato population, segregating for resistance to early blight in leaves and tubers, was characterized to identify novel quantitative trait loci (QTL) associated with foliar and tuber early blight resistance. Assessment of the disease resistance in the foliage was performed by field evaluation and in tuber under controlled conditions. Results from this study revealed significant differences (P < 0.001) in resistance to A. solani among potato clones both in the leaves and in tubers. There was no statistically significant correlation (r = 0.06, P = 0.35) between the resistance scores from leaves and tubers. Several clones exhibited; however, high levels of resistance both in leaves and tubers and are; thus, promising candidates for breeding for early blight resistance. Linkage mapping revealed several QTL for early blight affecting both foliage and tubers. QTL associated with disease resistance in the tuber were found on chromosomes 1, 2, 3, 4, 8, 11 and 12. QTL associated with disease resistance in foliage were also examined for independence from defoliation, and independent QTL were; thus, found on chromosomes 5 and 11.

Authors/Creators:Ortiz Rios, Rodomiro Octavio and Odilbekov, Firuz and Selga, Catja and Chawade, Aakash and Liljeroth, Erland
Title:QTL Mapping for resistance to early blight in a tetraploid potato population
Year of publishing :2020
Volume:10
Article number:728
Number of Pages:14
Publisher:MDPI
ISSN:2073-4395
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Horticulture
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 404 Agricultural Biotechnology > Genetics and Breeding
Keywords:Alternaria solani, crossed population, QTL tuber resistance, early blight
URN:NBN:urn:nbn:se:slu:epsilon-p-105557
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105557
ID Code:17081
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Breeding (from 130101)
(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:09 Jun 2020 06:20
Metadata Last Modified:09 Jun 2020 06:20

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits