Genetic analysis of net form net blotch resistance in barley lines CIho 5791 and Tifang against a global collection of P. teres f. teres isolates

2016 ◽  
Vol 130 (1) ◽  
pp. 163-173 ◽  
Author(s):  
V. M. Koladia ◽  
J. D. Faris ◽  
J. K. Richards ◽  
R. S. Brueggeman ◽  
S. Chao ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Net Blotch ◽  
Net Form Net Blotch

Breeding barley for durable resistance to net and spot forms of net blotch

2021 ◽  
pp. 567-586
Author(s):  
Jerome D. Franckowiak ◽  
◽  
Gregory J. Platz ◽  
Keyword(s):  
Population Dynamics ◽  
Molecular Markers ◽  
Durable Resistance ◽  
Pyrenophora Teres ◽  
Net Blotch ◽  
Net Form Net Blotch

This chapter focuses on breeding barley for durable resistance to net and spot forms of net blotch. It starts by reviewing how Pyrenophora teres f. teres can cause net form net blotch. The chapter then goes on to examine the molecular markers that can be identified to provide resistances to net form net blotch. A section on the population dynamics of barley–P. teres f. teres interactions is also provided. The chapter also reviews how breeding crops with specific genes can help to create durable resistance to net form blotch. It moves on to discuss how Pyrenophora teres Drechs. f. maculata can cause spot form net blotch and how identifying specific molecular markers can help provide resistance to this form of net blotch. The chapter concludes by highlighting the importance of combining durable resistance to both forms of net blotch.

Genetic analysis of a worldwide barley collection for resistance to net form of net blotch disease (Pyrenophora teres f. teres)

2019 ◽  
Vol 132 (9) ◽  
pp. 2633-2650 ◽  
Author(s):  
Fluturë Novakazi ◽  
Olga Afanasenko ◽  
Anna Anisimova ◽  
Gregory J. Platz ◽  
Rod Snowdon ◽  
...  
Keyword(s):  
Genetic Analysis ◽  
Pyrenophora Teres ◽  
Net Blotch

Genome‐Wide Association Mapping of Seedling Net Form Net Blotch Resistance in an Ethiopian and Eritrean Barley Collection

Crop Science ◽  
2019 ◽  
Vol 59 (4) ◽  
pp. 1625-1638 ◽  
Author(s):  
Anil Adhikari ◽  
Brian J. Steffenson ◽  
Madeleine J. Smith ◽  
Ruth Dill‐Macky
Keyword(s):  
Association Mapping ◽  
Genome Wide Association ◽  
Net Blotch ◽  
Genome Wide ◽  
Net Form Net Blotch

scholarly journals Mapping Net Form Net Blotch and Septoria Speckled Leaf Blotch Resistance Loci in Barley

2010 ◽  
Vol 100 (1) ◽  
pp. 80-84 ◽  
Author(s):  
S. St. Pierre ◽  
C. Gustus ◽  
B. Steffenson ◽  
R. Dill-Macky ◽  
K. P. Smith
Keyword(s):  
Phenotypic Variation ◽  
Recombinant Inbred Lines ◽  
Interval Mapping ◽  
Net Blotch ◽  
Upper Midwest ◽  
Breeding Lines ◽  
Leaf Blotch ◽  
Net Form Net Blotch ◽  
Development And Utilization ◽  
Simple Sequence

Septoria speckled leaf blotch (SSLB), caused by Septoria passerinii Sacc., and net form net blotch (NB), caused by Pyrenophora teres f. teres Drechsler, are fungal diseases that decrease the yields of barley in the Upper Midwest. An effective way to manage these diseases is to plant resistant cultivars. To characterize the genetics of resistance to both pathogens, two advanced barley breeding lines, one resistant to NB (M120) and another resistant to SSLB (Sep2-72), were crossed, creating a population of 115 recombinant inbred lines. The two parents and the population were evaluated in three greenhouse seedling assays for each pathogen and for simple-sequence repeat and diversity arrays technology markers. Composite interval mapping revealed two major quantitative trait loci (QTL) associated with NB on chromosome 6H, located in bins 2 and 6. The QTL located in bin 6 explained 19 to 48% of the phenotypic variation and the QTL located in bin 2 explained 25 to 44% of the phenotypic variation. A new locus for resistance to SSLB, Rsp4, was identified on chromosome 6H, located in bins 3 to 4. Mapping these genes in elite breeding germplasm will accelerate the development and utilization of marker-assisted selection to enhance resistance to these diseases.

Genetic analysis of net blotch resistance in a two-row × six-row cross of barley, using doubled-haploid lines

2008 ◽  
Vol 88 (1) ◽  
pp. 257-266
Author(s):  
M. Cherif ◽  
S. Rezgui ◽  
P. Devaux ◽  
M. Harrabi
Keyword(s):  
Hordeum Vulgare ◽  
Genetic Analysis ◽  
Doubled Haploid ◽  
Partial Resistance ◽  
Quantitative Resistance ◽  
Parental Line ◽  
Pyrenophora Teres ◽  
Net Blotch ◽  
Dh Lines ◽  
Disease Parameters

The effect of spike type on net blotch resistance is not fully understood in barley (Hordeum vulgare L.). A doubled-haploid barley population derived from a cross between a susceptible two-row (Roho) and a resistant six-row (line 90) genotypes was used to study the genetics of net blotch resistance and to determine the effect of spike type on net blotch resistance at the adult plant growth stage across three environments. Net blotch rating was evaluated using a mass disease index, area under the disease progress curve and the apparent infection rate. Partial resistance to Pyrenophora teres was observed in many DH lines and in the parental line 90 in the three environments. This result indicated that selecting for partial resistance is feasible under severe net blotch conditions where differential responses among DH lines were noted as in Mograne in 2003–2004. The normality test and/or the means comparison method suggested that additive × additive epistasis effects influenced the expression of all disease parameters in the three environments. Both the coefficient of skewness and the number of transgressive lines indicate the presence of a complementary gene interaction for most disease parameters. Results showed that two-row lines were particularly associated with net blotch resistance in Mograne 2002–2003 and in Tunis greenhouse 2004. A strategy for improving the level of quantitative resistance to P. teres in later generations is recommended. Key words: Hordeum vulgare, doubled-haploid population, quantitative resistance, Pyrenophora teres, net blotch, genetic analysis

scholarly journals Analysis of apoplastic proteins expressed during net form net blotch of barley

2020 ◽  
Vol 127 (5) ◽  
pp. 683-694
Author(s):  
Kealan Hassett ◽  
Simon R. Ellwood ◽  
Katherine G. Zulak ◽  
Mariano Jordi Muria-Gonzalez
Keyword(s):  
Net Blotch ◽  
Net Form Net Blotch
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