Uredospore production and sporulation period of Puccinia recondita f. sp. triticina on primary leaves of wheat

Mehta, Y. R.; Zadoks, J.C.

doi:10.1007/bf03041356

Cited by 73 publications

(69 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In bean rust the growth rate of uredosori and spore production were negatively associated with infection density (Yarwood 1961). In wheat leaf rust (Mehta and Zadoks 1970) and barley leaf rust the same was observed (Baart et al 1991). This density depending effect starts as soon as the much energy asking spore production starts.…”

Section: Discussionsupporting

confidence: 63%

“…In this study it was the parameter that correlated less well with the other three parameters (Table 4). The LP, IF and CR are important components of quantitative resistance (Mehta and Zadoks 1970;Parlevliet 1975Parlevliet , 1979Parlevliet and Kuiper 1977;Broers 1989a, b;Habtu and Zadoks 1995;Broers 1997). In the seedling stage the differences in LP among cultivars were small.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

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

Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

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

show abstract

“…Lesion density was first analyzed as a response variable to estimate potential differences in infection efficiency and then was introduced as a quantitative co-variable in the analysis of latent period, spore production and lesion size, which are potentially density-dependent variables (Mehta and Zadoks 1970;Shaner 1983;Robert et al 2004). In the lesion size analysis, log-transformation of lesion density was needed to linearize the data.…”

Section: Statistical Analysesmentioning

confidence: 99%

Variation in aggressiveness is detected among Puccinia triticina isolates of the same pathotype and clonal lineage in the adult plant stage

Pariaud¹,

Goyeau

Halkett³

et al. 2012

Eur J Plant Pathol

View full text Add to dashboard Cite

Puccinia triticina reproduces asexually in France and thus individual genotype is the unit of selection. A strong link has been observed between genotype identities (as assessed by microsatellite markers) and pathotypes (pools of individuals with the same combination of qualitative virulence factors). Here, we tested whether differences in quantitative traits of aggressiveness could be detected within those clonal lineages by comparing isolates of identical pathotype and microsatellite profile. Pairs of isolates belonging to different pathotypes were compared for their latent period, lesion size and spore production capacity on adult plants under greenhouse conditions, with a high number of replicates. Isolates of the same pathotype showed remarkably similar values for the measured traits, except in three situations: differences were obtained within two pathotypes for latent period and within one pathotype for sporulation capacity.One of these differences was tested again and confirmed. This indicates that the average aggressiveness level of a leaf rust pathotype may increase without any change in its virulence factors or microsatellite profile.

show abstract

“…typica Arth. (Yarwood 1961) and F. recondita tritici (Mehta & Zadoks 1970). The influence of temperature, light, uredinium density, <Jnd pathogen virulence on latent period has been examined, (Cammack 1967;Parlevliet 1975;Melander 1935;Saari & Moore 1962), but much less information is available on their effect on the infectious period (Mehta & Zadoks 1970;Cammack 1961).…”

Section: Introductionmentioning

confidence: 99%

“…(Yarwood 1961) and F. recondita tritici (Mehta & Zadoks 1970). The influence of temperature, light, uredinium density, <Jnd pathogen virulence on latent period has been examined, (Cammack 1967;Parlevliet 1975;Melander 1935;Saari & Moore 1962), but much less information is available on their effect on the infectious period (Mehta & Zadoks 1970;Cammack 1961). There are conflicting reports on the effect of temperature on the latent period of Received 5 September 1977 P. hordei (Simkin & Wheeler 1974;Parlevhet 1975), and the effect of temperature and uredinium density on the length of the infectious period has not been studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature and uredinium density on urediniospore production, latent period, and infectious period ofPuccinia hordeiOtth

Teng

1978

New Zealand Journal of Agricultural Research

View full text Add to dashboard Cite

The effect of 5 temperature regimes and 10 urediniuf.J1 densities on urediniospore produc tion, latent period, and infectious period of a New Zealand isolate of Puccinia hordei Dtth on 'Zephyr' barley was investigated. Increasing ambient temperature in the range 10°-25°c decreased the length of the latent period and increased total urediniospore production during lhe infectious period. In all cases the spore production curve was negatively skewed. The length of the infectious period was not significantly affected by temperatures between 10°-20°c, but it was less at 25°c. Increasing uredinium density from 1/cm 2 to 161/cm 2 leaf area decreased uredinium size, urediniospore production per uredinium, and lengths of infectious and latent periods, but spore production per unit area of uredinium and the rate of uredinium eruption were both increased. Terminology of the rust infection cycle is discussed in relation to bases for quantification and comparison between laboratories. 287

show abstract

Uredospore production and sporulation period of Puccinia recondita f. sp. triticina on primary leaves of wheat

Cited by 73 publications

References 1 publication

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

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

Variation in aggressiveness is detected among Puccinia triticina isolates of the same pathotype and clonal lineage in the adult plant stage

Effect of temperature and uredinium density on urediniospore production, latent period, and infectious period ofPuccinia hordeiOtth

Contact Info

Product

Resources

About