Components of adult plant resistance to leaf rust in wheat

Denissen, C.J.M.

doi:10.1007/bf00029650

Cited by 25 publications

(18 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…While, the two wheat genotypes Gemmeiza 7 and Sids 1 showed the highest AUDPC values. These genotypes classified as the highly susceptible or fast rusting genotypes group, similarly to those reported by Nazim et al (1990); Denissen (1993) and Singh et al (2005).…”

Section: Discussionsupporting

confidence: 70%

Seedling and adult plant resistance to leaf rust in some Egyptian wheat genotypes

Sallam¹,

El-Orabey²,

Omara³

2016

Afr. J. Agric. Res.

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 70%

Seedling and adult plant resistance to leaf rust in some Egyptian wheat genotypes

Sallam¹,

El-Orabey²,

Omara³

2016

Afr. J. Agric. Res.

View full text Add to dashboard Cite

show abstract

“…Wheat and barley cultivars with quantitative resistance to yellow and leaf rust tend to have a long latency period, a low infection frequency, a decreased spore production and a short infectious period (Parlevliet 1975;Denissen 1993;Broers and Jacobs 1989;Broers 1997). Latency period is the most important component of quantitative resistance in these pathosystems (Parlevliet and Van Ommeren 1975;Neervoort and Parlevliet 1978;Broers and Jacobs 1989).…”

Section: Introductionmentioning

confidence: 99%

“…There are different strategies for controlling the disease, but genetic resistance is the more economically and environmentally appropriate option (Broers and Jacobs 1989). The economic value of genetic resistance depends on both its level and durability (Denissen 1993).…”

Section: Introductionmentioning

confidence: 99%

Quantitative resistance and its components in 16 barley cultivars to yellow rust, Puccinia striiformis f. sp. hordei

et al. 2006

View full text Add to dashboard Cite

Sixteen barley cultivars with a susceptible infection type (IT = 7-8) in the seedling stage to an isolate of race 24 of Puccinia striiformis f. sp. hordei were planted at two locations in Mé xico. Disease severity (DS) parameters were assessed for the flag leaf and for the upper three leaves. The cultivars represented at least five levels of quantitative resistance ranging from very susceptible to quite resistant. ''Granado'', ''Gloria/Copal'' and ''Calicuchima-92'' represented the most resistant group and had an IT of 7 or 8. The cultivar · environment interaction variance, although significant, was very small compared with the cultivar variance. The disease severity parameters were highly correlated. The monocyclic parameter DS m , measured when the most susceptible cultivar had reached its maximum DS, was very highly correlated with the area under the disease progress curve (AUDPC), r being 0.98.Components of quantitative resistance were evaluated in two plant stages. In the seedling stage small cultivar effects for the latency period were observed, which were not correlated with the quantitative resistance measured in the field. In the adult plant stage the latency period (LP), infection frequency (IF) and colonization rate (CR) were measured in the upper two leaves. The LP was much longer than in the seedling stage and differed strongly between cultivars. The differences in IF were too large, those in CR varied much less. The components showed association with one another. The LP and IF were well correlated with the AU-DPC (r = 0.7-0.8).

show abstract

“…It corresponds to rate of appearance of symptoms on infected plants. Latent period has been found to be an important factor of non-race-specific resistance in most hostpathogen interactions (Kolmer and Leonard 1986;Denissen 1993;Browne and Cooke 2005;Yan et al 2006). The number of spores produced by a diseased plant will determine the quantity of inoculum that can infect neighbouring plants.…”

Section: Discussionmentioning

confidence: 99%

“…The criteria described in this study can be easily used for testing several sunflower genotypes for different P. halstedii races. For biotrophic pathogens, such as rusts and powdery mildews, Geiger and Heun (1989) and Denissen (1993) found that major components of non-race-specific resistance are infection efficiency, latent period and duration of sporulation. Differences in percentage infection could be due to differences in the rate of maturation of zoosporangia or in capacity of zoospores to penetrate healthy host tissue (Delanoe¨1972).…”

Section: Discussionmentioning

confidence: 99%

Aggressiveness variation inPlasmopara halstediiand its alternation with non-race-specific resistance in sunflower

Sakr

2012

Archives Of Phytopathology And Plant Protection

View full text Add to dashboard Cite

Aggressiveness variation and its alternation with non-race specific resistance in sunflower were studied in 19 Plasmopara halstedii isolates belonging to several races. Regarding aggressiveness criteria, percentage infection, latent period, sporulation density and dwarfing, on two sunflower inbred lines showing different levels of non-race specific resistance resistance FU and BT, there were significant differences in aggressiveness for P. halstedii isolates. The index of aggressiveness varied between 9.4 and 31.4. The inbred line BT, rather susceptible in the field, showed a higher percentage infection, a higher sporulation density, a shorter latent period and less reduced hypocotyl length than inbred line FU, which showed a greater resistance in the field. Percentage infection on FU was 1.4% less than BT, latent period on BT was 12.4% less than FU, sporulation density on FU was 22.3% less than BT and reduced hypocotyl length on BT was 15.3% less than FU. Consequently, it seems that the criteria as latent period, sporulation density and reduction of hypocotyl length could be used to measure non-race specific resistance in sunflower to P. halstedii under controlled conditions.

show abstract

Components of adult plant resistance to leaf rust in wheat

Cited by 25 publications

References 22 publications

Seedling and adult plant resistance to leaf rust in some Egyptian wheat genotypes

Seedling and adult plant resistance to leaf rust in some Egyptian wheat genotypes

Quantitative resistance and its components in 16 barley cultivars to yellow rust, Puccinia striiformis f. sp. hordei

Aggressiveness variation inPlasmopara halstediiand its alternation with non-race-specific resistance in sunflower

Contact Info

Product

Resources

About