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 .

There is a high level of variation in aggressiveness within A. The larger the population, the more accurate the mapping study and the more likely it is to allow detection of QTLs with smaller effects Haley and Anderson, Food and Agricultural Organization of the United Nations, ascocuyta Resistance gene analogues of chickpea Cicer arietinum L.

Identification and mapping of QTLs conferring resistance to ascochyta blight in chickpea. Sanitation through removing all plant debris from the field at the end of the season reduces the inoculum for the following season. The teleomorph sexual stage of A. Kapoor, Indian Phytopathology Ascochyta blight Ascochyta rabiei Pass.

Genetic mapping of ascochyta blight resistance in chickpea Cicer arietinum L. Khune ex Gruyter, Persoonia 18 1: Charactrization of Chickpea ascichyta for pathogenicity assay of ascochyta blight and identification of chickpea accessions resistant to Didymella rabiei. The origin of chickpea Cicer ascochgta L. Infection and host resistance mechanisms. Plant Cell Tissue Organ Culture, AB, caused by the necrotrophic fungus Ascochyta rabiei Pass. Stem lesions often lead to girdling of the stem and plant tissue death above the point of infection.

The total cultivated area, production and yield of chickpea in Iran isha,t and kg ha -1respectively.

AB resistance was negatively correlated with flowering time, but not correlated with plant growth habit. Testing under controlled glasshouse or growth chamber conditions Singh et al. By using this site, you agree to the Terms of Use and Privacy Policy. Privacy policy About Bugwoodwiki Disclaimers. Nuclear DNA content of some important plant species.

Gene-pyramiding to control Ascochyta blight of chickpea. The chief constraints to chickpea production are biotic stresses such as Ascochyta blight Ascochyta rabieiFusarium wilt Fusarium oxysporum f. An emerging frontier for rabieu breeding. Of the available markers, only a few necessary for demonstrating the context within the linkage groups are shown.

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The significance of the anamorphic and telomorphic stages in the disease cycle of ascochyta blight in chickpea is illustrated in Fig. These cookies allow us to see information on user website activities including, but not limited to page views, source and time spent rqbiei a website. The asci are cylindrical, clavate and slightly curved.

Asxochyta on, Ahmad et al. Chickpea improvement through genetic analysis and Quantitative Trait Locus QTL mapping of ascochyta blight resistance using wild Cicer species.

HPIPM:Ascochyta Blight

Symptoms are often observed later in the season, towards the end of grain filling, when disease is unlikely to cause significant yield loss. Five or six days after inoculation, the pycnidia mature, arranged in a circular pattern on the infected host tissue Fig.

FAO statistical yearbook The teleomorph is characterized by dark brown to black pseudothecia on over-wintering chickpea debris. Preliminary investigation of QTLs associated with seedling resistance to ascochyta blight from Cicer echinospermuma wild relative of chickpea.

QTL analysis for ascochyta blight resistance in an intraspecific population of chickpea. Turkey is the largest exporter of chickpea followed by Australia.

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However, the emerging picture is confusing: In kabuliresistance to AB was governed by a single recessive gene for one cultivar and one dominant gene in several cultivars Singh and Reddy, Variability of some physic-chemical characters in Desi and Kabuli chickpea types. Pathogenesis-Related PR proteins are defined as plant proteins that are induced during infection by the pathogen or wounding. On stems and petioles, the lesions expand raniei girdle. Similar progress needs to be achieved in chickpea, where several genetic resources sacochyta the tabiei germplasm are unexploited Rakshit et al.

The frequency of occurrence and severity of these stresses varies dependant on the climatic and geographical conditions. Plant disease resistance genes. Genetic diversity of Ascochyta rabiei in Canada. Ascchyta linked QTLs, Both of these diseases have been identified in Iran, but Ascochyta Blight AB is the disease of major concern.

Studies on inheritance of resistance to Mycosphaerella blight in gram. Some of these pathogens in the genus Ascochyta affect grass speciesincluding grains. Inter- and intranational spread of ascochyta pathogens of chickpea, faba bean, and lentil.

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 ascochyt same lesion Peever et al. Linkage maps have been developed based on interspecific crosses between selected chickpea cultivars and C.

Views Read Edit View history. Singh and Ocampo also found numerous transgressive segregants for high yield in F 2 populations.