Validation of a new spot form of net blotch differential set and evidence for hybridisation between the spot and net forms of net blotch in Australia

McLean, Mark S.; Martin, Anke; Gupta, Sanjiv; Sutherland, Mark W.; Hollaway, Grant; Platz, G. J.

doi:10.1007/s13313-014-0285-8

Cited by 37 publications

(45 citation statements)

References 34 publications

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“…It appears resistance is controlled by a large number of QTL that vary in effect size, with large effect QTL on 7H. Liu et al (2011) andMcLean et al (2014) summarised that resistance to SFNB was contributed by major effect genes, along with minor effect QTL, with two named genes (i.e. Rpt6 and Rpt4) with large effects located on 5H and 7H (Manninen et al 2006;Williams et al 1999) and one unnamed major gene on 4H (Friesen et al 2006) having been found to explain 64-84 % of the phenotypic variation individually.…”

Section: Genetic Architecture Of Sfnb Resistancementioning

confidence: 99%

Spot form of net blotch resistance in barley is under complex genetic control

Wang

Mace²,

Platz³

et al. 2015

Theor Appl Genet

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significant QTL were validated across multiple breeding populations, with 22 conferring resistance at both seedling and adult plant growth stages. The remaining 7 QTL conferred resistance at either seedling (2 QTL) or adult plant (5 QTL) growth stages only. These 29 QTL represented 24 unique genomic regions, of which five were found to co-locate with previously identified QTL for SFNB. The results indicated that SFNB resistance is controlled by a large number of QTL varying in effect size with large effects QTL on chromosome 7H. A large proportion of the QTL acted in the same direction for both seedling and adult responses, suggesting that phenotypic selection for SFNB resistance performed at either growth stage could achieve adequate levels of resistance. However, the accumulation of specific resistance alleles on several chromosomes must be considered in molecular breeding selection strategies.

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Section: Genetic Architecture Of Sfnb Resistancementioning

confidence: 99%

Spot form of net blotch resistance in barley is under complex genetic control

Wang

Mace²,

Platz³

et al. 2015

Theor Appl Genet

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“…Cultivar 'Kombar' showed susceptible reaction, and cultivar 'Tifang' showed resistant reaction previously (Steffenson, Webster, 1992;McLean et al, 2014). In previous studies, barley cultivars 'Bülbül 89' and 'Avcı 2002' also showed susceptible and resistant reactions to P. teres, respectively (Usta et al, 2014;Yazıcı et al, 2015).…”

Section: Methodsmentioning

confidence: 94%

“…Differences in the virulence levels of pathogenic fungi were reported. Pathogenic variation in P. teres was reported previously (Steffenson, Webster, 1992;McLean et al, 2014;. Many reports have been published on highly, moderate and low virulent isolates (Usta et al, 2014;Yazıcı et al, 2015).…”

Section: Introductionmentioning

confidence: 90%

Extracellular protease activity and glucose production in isolates of net blotch pathogens differing in virulence

Dikilitaş

Oğuz

Karakaya

2018

Zemdirbyste-Agriculture

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“…Plants were watered on alternate days and never fertilized or sprayed during the study; however, the Sunshine potting mix (W.R. Grace and Co., Fogelsville, PA) used contained sources of the main required plant nutrients. For both forms, barley genotypes were placed into five resistance classes: very good resistance when the reactions ranged from 1 to £2; good from >2 to £4; fair from >4 to £6; poor from >6 to £7, and very poor when >7 (Douiyssi et al, 1998;McLean et al, 2014;Tekauz and Banik, 2014). Inoculated plants were covered with sterile plastic bags for 24 h and maintained at approximately 100% relative humidity at room temperature in the inoculation room.…”

Section: Fungal Isolates and Preparation Of Inoculummentioning

confidence: 99%

“…For each barley differential-isolate interaction, the average disease reaction was calculated by averaging the arithmetic mean of reactions in the two experiments (two leaves per plant, four plants per replicate, and four replicates per experiment). For both forms, barley genotypes were placed into five resistance classes: very good resistance when the reactions ranged from 1 to £2; good from >2 to £4; fair from >4 to £6; poor from >6 to £7, and very poor when >7 (Douiyssi et al, 1998;McLean et al, 2014;Tekauz and Banik, 2014).…”

Section: Fungal Isolates and Preparation Of Inoculummentioning

confidence: 99%

Resistance to Pyrenophora teres f. teres and P. teres f. maculata in Canadian Barley Genotypes

et al. 2017

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The fungi Pyrenophora teres Drechs. f. teres Smedeg. (Ptt) and Pyrenophora teres Drechs. f. maculata Smedeg. (Ptm) cause the net (NFNB) and spot forms (SFNB) of net blotch of barley (Hordeum vulgare L.). The reaction of a collection of barley genotypes previously identified as resistant to NFNB and/or SFNB in western Canada was assessed against seven isolates each of Ptt and Ptm. These included isolates recently collected from western Canada plus reference isolates frequently used in resistance breeding programs. Experiments were conducted under greenhouse conditions, with the second and third leaves of each plant rated on disease reaction scales of 1 to 10 (Ptt) or 1 to 9 (Ptm) 1 wk after inoculation. The NFNB resistance in the cultivars ‘Vivar’ and ‘CDC Helgason’ was overcome by two and four of the Ptt isolates, respectively. ‘AAC Synergy’ was resistant to all Ptt isolates examined, although two caused disease severities of 4.6 and 5.0, suggesting some adaptation to the resistance in this cultivar. The breeding lines TR 253, CI 9819, and TR 236 were the most resistant to Ptt, with average disease severities of almost 3.0. Resistance to SFNB in ‘CDC Meredith’ was overcome by all Ptm isolates tested, while ‘Cerveza’, ‘Major’, and AAC Synergy were resistant to all of the isolates. Among the breeding lines, TR 236 was the most resistant to Ptm, with an average rating score of 3.9. The identification of isolates virulent on cultivars classified as “resistant” highlights the need for integrated disease management approaches to avoid net blotch resistance breakdown in western Canada.

show abstract

Validation of a new spot form of net blotch differential set and evidence for hybridisation between the spot and net forms of net blotch in Australia

Cited by 37 publications

References 34 publications

Spot form of net blotch resistance in barley is under complex genetic control

Spot form of net blotch resistance in barley is under complex genetic control

Extracellular protease activity and glucose production in isolates of net blotch pathogens differing in virulence

Resistance to Pyrenophora teres f. teres and P. teres f. maculata in Canadian Barley Genotypes

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