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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It is a good source of calcium, magnesium, potassium, phosphorus, iron, zinc and manganese Ibrikci et al.

Immunochemical studies on resistant and susceptible cultivars have indicated that polyamine metabolism and subsequent release of hydrogen peroxide H 2 O 2 in the apoplast contribute to resistance in chickpea plants inoculated with A.

The disease is also referred to as ascochyta blight but there rabiej other fungal species that cause diseases in other pulse species that also go by that term.

Home – Ascochyta rabiei ArDII

Further, different loci may contribute to resistance at different points of the life cycle of the plant Collard et al. Due to constantly changing labels, laws and regulations, the Extension Services can assume no liability for the suggested use of chemicals contained herein. State rules and regulations and special pesticide use allowances may vary from state to state: Strobilurins should not be used for Ascochyta control on chickpea.

The lower and upper temperature limits for infection by A.

Later on, Ahmad et al. Identification and mapping of QTLs conferring resistance to ascochyta blight in chickpea. Ascichyta identification Polyphasic identification. Progress has been done in chickpea research using several biotechnological tools in the last 10 years.


Inheritance and linkage relationships of morphological and isozyme loci in chickpea Cicer arietinum L.

Grain Legume Crops, Summerfield, R. The inheritance of ascochyta blight resistance and rabieo leaf types and their correlation were investigated in intraspecific progeny derived from crosses among two resistant genotypes with normal leaf type ICC and Almazone susceptible simple leaf type Kimberley Large and one susceptible multipinnate leaf type 24 B-Isoline Aryamanesh, There are some factors that affecting the detection of QTLs segregating in a population Asins, To complicate the picture even more, other genes may modify the expression of resistance.

Evaluation of chickpea germplasm has shown that there are very few accessions with resistance to AB Reddy and Singh, Under cool moist conditions, the disease spreads rapidly through the field.

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Reduced irrigation prevents the spread of conidia from infected leaves rabii healthy leaves by decreasing dispersal of conidia. How to cite this article: Later, they develop a brown margin with a white center and split longitudinally.

Current cultivars only possess partial resistance to the ascoochyta and this level of resistance can breakdown easily because the pathogen is highly variable due to potential for sexual recombination. Sources of resistance have been identified Singh and Reddy, and the development of stable blight resistant lines would allow a shift to sowing into the rainy season. Ascocyhta controls are essential for Ascochyta blight in most years, but are most effective when integrated with sound cultural control practices.

Molecular approaches to manipulation of disease resistance genes. To date, several sources of resistance, identified within the cultivated chickpea germplasm, have been used in genetic and breeding studies Flandez-Galves et al.


For example, Reddy and Kabbabeh reported the aggressiveness of the six isolates to be in the order 6’5’4’3’2’1 under plastic-house conditions.

Symptoms are found on lower leaves early in the season and upper leaves later in the season. In general, the infection process is delayed in resistant cultivars and the area of fungal colonization and pycnidium formation is restricted. Microsatellite markers for molecular breeding.

PC Ascochyta Blight – Bugwoodwiki

Present and future of quantitative trait locus analysis in plant breeding. Findings of different researches suggest that wild Cicer species are needed to create mapping populations even though they do not possess resistant genes Cobos et al.

These cookies allow us to see information on user website activities including, but not limited to page views, source and time spent on a website. Current name Classification Type name Basionym Obligate or homotypic synonyms Anamorph synonyms Teleomorph synonyms Facultative or heterotypic synonyms Type of organism.

Impact of different pathotypes and spore concentrations on Ascochyta blight incidence in two chickpea Cicer arietinum L. They are sent to a computer by website operators or third parties. Didymella rabiei Didymella rabiei growing on chickpea Scientific classification Kingdom: In another study for identifying molecular markers for AB resistance, recombinant inbred lines from an awcochyta cross between C.

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