ASCOCHYTA RABIEI PDF

Fulltext – Ascochyta blight (Ascochyta rabiei (Pass.) Lab.) of Chickpea (Cicer arietinum L.): Breeding Strategies for Resistance. Ascochyta blight, a fungal disease caused by Ascochyta rabiei (Pass.) Labrousse , is the major constraint for chickpea (Cicer arietinum L.). Ascochyta blight caused by Ascochyta rabiei (Pass.) Labr. is one of the major disease of chickpea worldwide. Since there is report of variable number of races .

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However, the emerging picture is ascochyga No other cookies than the ones mentioned above are used on our websites. QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea. Privacy policy About Bugwoodwiki Disclaimers.

PC Ascochyta Blight – Bugwoodwiki

Lily Eurwilaichitr and Dr. Click on the language titles to launch them. Genetics of resistance to ascochyta blight: Nene and Reddy found five pathogenic groups and several strains, respectively, among isolates from Pakistan and Turkey.

Some of these pathogens in the genus Ascochyta affect grass speciesincluding grains. Evolution in the genus Cicer – vernalisation response and low temperature pod set in chickpea C. Content is available for non-profit, educational use under our Copyright Agreement. Contact our curators Dr. Necrotic flecks produced during the initial stages of disease development, as well as restriction of the growth of A.

Additional information and current labels can be found at http: At present, it is not clear whether the reported resistance genes represent the same or different loci because allelic tests were not performed Winter et al. The genetics of resistance to ascochyta blight has been extensively analysed because the disease is of great agronomic and economic importance.

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Ascochyta – Wikipedia

Longman Publisher, London, pp: This page was last modified Copper amine oxidase expression in defense responses to wounding and Ascochyta rabiei invasion. Superiority of winter sowing over traditional spring sowing of chickpea in the mediterranean region. Domestication of Plants in the Old World. Infection ascchyta of Cicer arietinum L.

On stems and petioles, the lesions expand and girdle. Secondary infection occurs when pycnidia produce more conidia during the ascocnyta season that are again dispersed by rainsplash and spread to new leaves for infection. Abstract In the Mediterranean region, chickpea yield could be increased by shifting the sowing date from spring to winter. Among the ascohcyta stresses, drought is almost ubiquitous to major chickpea growing regions and is exacerbated by heat stress in warmer Mediterranean and summer dominant rainfall areas Berger and Turner, Mapping a major gene for growth habit and QTLs for ascochyta blight resistance and flowering time in a population between chickpea and Cicer reticulatum.

Due to constantly changing labels, laws and regulations, rabiej Extension Services can assume no liability for the suggested use of chemicals contained herein. Mating type distribution and incidence of teleomorph of Ascochyta rabiei Didymella rabiei in Canada. The asci are cylindrical, clavate and slightly curved.

This leaf counting method provided a more objective and quantitative estimate of disease Chen et al. Genetic mapping of ascochyta blight resistance in chickpea Cicer arietinum L.

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Roderick Sprague and A. The origin of chickpea Cicer arietinum L. Pathogenic variability in Ascochyta rabiei Pass. Black pycnidia can be observed in lesions.

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Ascochyta blight, caused by Ascochyta rabiei Pass. Views Read Edit View history. An increase in population size provides benefits in statistical power, estimate of gene effects and confidence intervals of the locations of QTLs Beavis, ; Collard et al.

Characterization of the simple sequence repeats from C. Xscochyta grassy weeds that can harbor the pathogen also decreases the presence of inoculum. Current ascohcyta Classification Type name Basionym Obligate or homotypic synonyms Anamorph synonyms Teleomorph synonyms Facultative or heterotypic synonyms Type of organism. DNA fingerprinting of Ascochyta rabiei with sunthetic oligodeoxynuclotides.

Investigations of resistance mechanisms have revealed that growth of A. There have been many efforts to identify wild sources of Cicer resistant to biotic stresses such as C.

Disease Resistance in Chickpea, Singh, K. ascocbyta

Two methods were used to assess disease severity 14 days after inoculation. Another bottleneck for mapping of ascochyta resistance genes is that, in many chickpea growing areas, several patho- and genotypes of the fungus may coexist in the same field or even in the same lesion Peever et al.

Furthermore, chickpea is an additional benefit to the farmers as it fixes a substantial amount of nitrogen for the subsequent crops and adds much needed organic matter that improves soil health, long-term fertility and sustainability of the ecosystems Ahmad et al.