Variation in virulence of Septoria tritici Rob ex Desm isolates on wheat

Perelló, A. E.; Cordo, Cristina Alicia; Arriaga, H. O.; Alippi, H.

doi:10.1051/agro:19910705

Cited by 14 publications

(10 citation statements)

References 5 publications

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“…Our findings suggests that nonisolate specific horizontal resistance may be present in these cultivars in the adult stage, but additional research with more isolates should be done to verify the results. Specific interactions have been reported by several researchers in seedlings (Eyal et al, 1985; Perelló et al, 1991; Ahmed et al, 1995; Ballantyne and Thomson, 1995; Kema et al, 1996a, 1996b). In the adult stage, Kema and Van Silfhout (1997) and Brown et al (2001) reported cultivar × isolate interactions.…”

Section: Discussionmentioning

confidence: 59%

Association between Septoria tritici Blotch, Plant Height, and Heading Date in Wheat

et al. 2005

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The relationship between resistance to Septoria tritici blotch with plant height and heading date has been in most cases attributed to genetic associations. More efficient selection for higher levels of quantitative resistance may result if the nature of the association between susceptibility with earliness and shortness can be determined. Genetic resistance to Septoria tritici blotch and its relationships with plant height and heading date were recorded in 50 Argentinean wheat (Triticum aestivum L.) cultivars in three environments (two in the field and one in the greenhouse) with one virulent isolate of Mycosphaerella graminicola (Fuckel) Schroeter, in Cohn (anamorph Septoria tritici Rob. ex Desm.). Furthermore, a set of 16 cultivars was tested with seven isolates of M. graminicola in the greenhouse at the adult stage. Cultivars varied greatly in resistance to the disease and plant material was identified with moderate to high levels of resistance to several isolates. The field and greenhouse experiments demonstrated no evidence of genetic associations between plant height, heading date, and resistance, indicating that selection of early and short lines with high levels of quantitative resistance is possible. The relationships between those traits were mainly caused by environmental and epidemiological factors, which indicates that management of cultivars should be optimized to minimize these associations.

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Section: Discussionmentioning

confidence: 59%

Association between Septoria tritici Blotch, Plant Height, and Heading Date in Wheat

et al. 2005

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“…S eptoria tritici blotch is an important disease in many areas where wheat is grown (Shipton et al, 1971; King et al, 1983; Eyal et al, 1987). Progress in breeding has been slow because of different factors, including a great variability in the pathogen, a certain degree of specificity, and the fact that breeding has concentrated on monogenic resistance, which implies specificity to some isolates is readily broken down (Lee and Cough, 1984; Perelló et al, 1991).…”

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confidence: 99%

Influence of Plant Height and Heading Date on the Expression of the Resistance to Septoria Tritici Blotch in Near Isogenic Lines of Wheat

2004

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Camacho Casas et al., 1995) or short stature (Rosielle and Brown, 1979;Baltazar et al., 1990;Camacho Casas The effects of plant height and heading date on the expression of et al., 1995); however, Arama et al. (1999) and Simó n the resistance to Septoria tritici blotch, which is caused by the fungus Mycosphaerella graminicola (Fuckel) Schroeter, in Cohn (Septoria et al. (2001) did not detect genetic associations between tritici Rob. ex Desm.), were investigated in wheat (Triticum aestivum resistance and plant height or heading date. Van Beu-L.) near isogenic lines in the Mercia and Cappelle-Desprez backningen and Kohli (1990) indicated that the associations ground and differing in dwarfing genes (Rht) or in genes for insensitivbetween plant height and heading date are due to epideity to photoperiod (Ppd ). The experimental design was a randomized miological factors. block design with four replications conducted over 2 yr. Necrosis Assuming no genetic associations, it is important to (i) percentage at boot (growth stage GS 49), milk (GS 73), and dough determine whether plant height or heading date affects stage (GS 85); area under disease progress curve (AUDPC); plant expression of resistance to Septoria tritici blotch and height; and heading date were recorded. The shortest lines, Mercia (ii) detect the influence of epidemiological or environ-Rht 12, Mercia Rht 3, and Cappelle-Desprez Rht 3, showed higher mental factors. Genotypes that are genetically similar necrosis percentage and AUDPC values than their respective controls. Mercia lines with Ppd 1 and Cappelle-Desprez Ppd1 and Ppd 2, the perimental J. Hirschhorn, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, Argentina, dur-Published in Crop Sci. 44:2078-2085 (2004). ing 2000 and 2001. Plots were 1 m long by 0.60 m (three rows)

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“…, 1985; Hamza et al. , 1999; Kema and VanSilfhout, 1997; Perello et al. , 1991) and are equally effective in seedling and adult plants (Brown et al.…”

Section: Host Specificitymentioning

confidence: 99%