2 edition of Identification and utilization of resistance to Ascochyta blight found in wild Cicer species found in the catalog.
Identification and utilization of resistance to Ascochyta blight found in wild Cicer species
P. Darlene Foote
Written in English
|Statement||by P. Darlene Foote.|
|The Physical Object|
|Pagination||ix, 72 leaves, bound :|
|Number of Pages||72|
Ascochyta blight (AB), caused by Ascochyta rabiei is a major disease of chickpea (Cicer arietinum L.), especially in areas where cool, cloudy, and humid weather persists during the crop season. Several epidemics of AB causing complete yield loss have been reported. The fungus mainly survives between seasons through infected seed and in infected crop debris. Despite Cited by: Table 1. Evaluation of wild Cicer accessions for resistance to Ascochyta blight in controlled environment. Reaction to Ascochyta blight infection a No. of _____ Cicer species lines tested A R MR S HS C. bijugum 30 – –7 C. cuneatum 3 – –1 2– C. echinospermum 4 – –– 31 C. judaicum 47 – 8 –Cited by:
Ascochyta fabae Speg.), D. lentis Kaiser, Wang and Rogers (anamorph A. lentis Vassiljevsky) and D. rabiei (Kovachevski) v. Arx (anamorph A. rabiei (Pass) Labr.) are the causal agents of ascochyta blights on faba bean (Vicia faba L.), lentil (Lens culinaris Medik.), and chickpea (Cicer arietinum L.), respectivelyFile Size: 1MB. Ascochyta blight, caused by Ascochyta rabiei (Pass.) Labrousse, is one of the most destructive diseases of chickpea (Cicer arietinum L.) worldwide. Despite the existence of highly resistant uncultivated genotypes, attempts to develop cultivars with a high level of durable resistance have been unsuccessful.
QTL Analysis of Ascochyta Blight Resistance in Chickpea ubc77d ubc65 cs44a Ga2 enp2 dia4 Ta Ts54 Ta2 ubcb Ta72s ubc13 ubcb LOD P ubca ubcb ubcb Gaa47 ubc LOD Linkage Group 4 Linkage Group 8 Figure -1 and QTL-2 conferring resistance to Ascochyta blight on linkage groups 8 and 4 of the. Cause Ascochyta rabiei, a fungus carried in and on seed and in infested crop ion and blight develop rapidly on susceptible cultivars in the presence of free moisture (rain and dew). Symptoms Leaf and stem lesions initially are chlorotic, usually necrotic, and numerous. Developing lesions tend to coalesce and cause blight (death) of all aboveground plant parts.
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Many reports on the screening of Wild Cicer species for resistance to ascochyta blight have appeared in the literature and a long list would be required to.
Two quantitative trait loci (QTLs), QTL-1 and QTL-2, conferring resistance to ascochyta blight, were identified which accounted for and %. Abstract. Fusarium wilt (FW; caused by Fusarium oxysporum f.
ciceris) and Ascochyta blight (AB; caused by Ascochyta rabiei) are two major biotic stresses that cause significant yield losses in chickpea (Cicer arietinum L.).
In order to identify the genomic regions responsible for resistance to FW and AB, recombinant inbred lines derived from a cross Cited by: 6.
Ascochyta blight (AB) caused by Ascochyta rabei (Pass.) Labr. is one of the most important constraints that limits the productivity of chickpea (Cicer arietinum L.).
The absence of high levels of stable resistant sources to the pathogen has necessitated the continued search and identification of new sources of resistance. The main aim of this work was to identify new Cited by: Diallel analysis reveals the genetic control of resistance to Ascochyta blight in diverse chickpea and wild Cicer species.
Euphytica 3. Dey, S. K., and Singh, G. Resistance to Ascochyta blight in chickpeas. Euphytica 4. Harveson, R. A severe outbreak of Ascochyta blight of chickpeas in western Nebraska. Ascochyta is a genus of ascomycete fungi, containing several species that are pathogenic to plants, particularly cereal crops.
The taxonomy of this genus is still incomplete. The genus was first described in by Marie-Anne Libert, who regarded the spores as minute asci and the cell contents as spherical spores. Numerous revisions to the members of the genus and its Class: Dothideomycetes. rabiei) causes Ascochyta blight of chickpea.
Ascochyta blight of pea (Ascochyta pisi) and lentil (Ascochyta lentis) are caused by different species, and do not cause Ascochyta blight on chickpea. Symptoms and Signs Ascochyta blight can infect all above-ground plant parts (Figure 1), and can be found anytime after crop Size: KB. Mapping of genes involved in defense in maps containing QTLs for resistance to ascochyta blight have resulted in the identification of candidate genes for resistance to ascochyta blight.
This approach has revealed the co-localization of QTLs for resistance to M. pinodes and RGAs, the putative transcription factor PsDof1 and the pea defensin Cited by: Among various strategies, genetic resistance is the most eco-nomically and ecologically sound approach to control Ascochyta Identification of QTLs Associated with Improved Resistance to Ascochyta Blight in an Interspecific Pea Recombinant Inbred Line Population Ambuj Bhushan Jha, Bunyamin Tar’an, Robert Stonehouse, and Thomas D.
Warkentin Cited by: Ascochyta blights occur throughout the world and can be of significant economic importance. Three fungi contribute to the ascochyta blight disease complex of pea (Pisum sativum).Ascochyta pinodes (sexual stage: Mycosphaerella pinodes) causes Mycosphaerella blight.
Ascochyta pinodella (synonym: Phoma medicaginis var. pinodella) causes Ascochyta foot rot, and Causal agents: Ascochyta pinodes. Sufficient genetic resistance to conventrional bshy a tpes, o 50 s alr s thai 8. Reddy, M. V., and Nene, Y. Screening of Ascochyta blight in chickpea exists that conventional bushy types, possess a fair Cicer spp.
for resistance to Ascochyta blight. lentil, genetics of resistance to Ascochyta blight and genetic variations among pathogen populations (isolates). Breeding methods for control of the disease are discussed.
Six pathotypes of A. lentis have been reported. Many resistant cultivars/lines have been identified in both cultivated and wild lentil. Resistance to Ascochyta blight in Cited by: Abstract: Ascochyta blight (AB) caused by Ascochyta rabiei (Pass.) Labr. is an important and widespread disease of chickpea (Cicer arietinum L.) worldwide.
The disease is particularly severe under cool and humid weather conditions. Breeding for host resistance is an efﬁcient means to combat this by: Genetic mapping of ascochyta blight resistance in chickpea (Cicer arietinum L.) using a simple sequence repeat linkage map Genome Constitutive expression of the Flavanone 3-hydroxylase gene related to pathotype-specific ascochyta blight resistance in Cicer arietinum L.
Physiological and Molecular Plant Pathology Detection of two quantitative trait loci for resistance to ascochyta blight in an intra-specific cross of chickpea (Cicer arietinum L.): development of SCAR markers associated with resistance.
Iruela M(1), Rubio J, Barro F, Cubero JI, Millán T, Gil J. Author information: (1)Dpto. de Mejora y Agronomía, IFAPA, Córdoba, Córdoba, by: Ascochyta species can be found on senescing or dead leaves of several turfgrass species, however the disease appears to be Ascochyta Leaf Blight of Turf.
Management Ascochyta leaf blight can be managed by following good cultural practices that minimize stress in the Size: 1MB. Ascochyta blight (AB) is an important disease of pea which can cause severe grain yield loss under wet conditions. In our previous study, we identified two quantitative trait loci (QTLs) abIII-1 and abI-IV-2 for AB resistance and these QTLs were consistent across locations and/or years in an inter-specific pea population (PR) developed from a cross between Alfetta (Pisum Cited by: Similarly, 25 wild Cicer species were screened for resistance to ascochyta blight by artificial inoculation of the germplasm under glasshouse (Benzohra et al., ).
In an evaluation trial of 13, chickpea accessions, desi type and 10 kabuli type chickpea accessions were found to be resistant against fusarium wilt (Haware et al., ).Author: Rahul Chandora, Gayacharan, Neelam Shekhawat, Nikhil Malhotra.
evaluation of chickpea (cicer arietinum l.) genotypes for host plant resistance to ascochyta blight (ascochyta rabiei) in elgeyo-marakwet, uasin-gishu and baringo counties of kenya chemweno jacob kiprop (bsc, agric ed) a /ce// a thesis submitted in partial fulfilment of the requirements. Chickpea also very rapidly produces some antifungal chemicals—isoflavones and phytoalexins—that have resistance against this pathogen.
Resistance to Ascochyta blight. Identification of resistant germplasm and the study of genetics in order to produce resistant chickpea varieties is a crucial step to fight this disease.
identification of mycosphaerella blight: The disease progresses from the bottom of the plant to the top, and it is often most severe at the bottom of the canopy.
Leaf lesions begin as either purplish-black or brown specks (A,D) or large brown lesions with a distinct concentric ring.Management of Ascochyta blight of chickpea Causal pathogen: Ascochyta rabiei Michael Wunsch, Plant Pathologist North Dakota State University Carrington Research Extension Center 9.
Even if disease-free seed is used and rotations are .the plant genome march vol.7, no.1 1 of 11 original research Marker-Assisted Backcrossing to Introgress Resistance to Fusarium Wilt Race 1 and Ascochyta Blight in .