Reaction of sorghum genotypes to the anthracnose fungus Colletotrichum graminicola

Casela, C. R.; Santos, F. G. dos; Ferreira, A. S.

doi:10.1590/s0100-41582001000200014

Cited by 22 publications

(23 citation statements)

References 7 publications

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“…Some alternatives have been studied to obtain a more stable resistance to this pathogen, for example the selection of genotypes with dilatory resistance, characterized as a higher capacity of some genotypes for limiting disease progress (Casela et al 1993). However, this resistance has also proven to be somewhat unstable, due to pathogen population variability (Guimarães et al 1998, Casela et al 2001.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of resistance in sorghum genotypes to the causal agent of anthracnose

Buiate¹,

Souza²,

Vaillancourt³

et al. 2010

CBAB

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Section: Introductionmentioning

confidence: 99%

Evaluation of resistance in sorghum genotypes to the causal agent of anthracnose

Buiate¹,

Souza²,

Vaillancourt³

et al. 2010

CBAB

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“…More than 40 races/pathotypes have been reported from different geographical areas of the world using different sets of putative host differentials (Casela and Ferreira, 1995;Marley et al, 2001Marley et al, , 2004Mathur et al, 2002;Rooney et al 2002). The C. graminicola races were first reported in the United States in 1967 (Haris and Johnson, 1967).…”

Section: Physiological Racesmentioning

confidence: 99%

“…Attempts were made to increase the durability of the resistance to anthracnose in sorghum. Strategies such as dilatory resistance, which reduces the rate of development of the disease (Guimaraes et al, 1998), identification of and dissociation of virulence in the population of the pathogen (Casela et al, 2001a) and the use of the mixtures of cultivars (Guimaraes et al, 1998). The use of hybrid development resulting from the combination of male sterile (A) and the restorer (R) lines against which there is no virulence association in the pathogen population seemed to the trick of reducing the disease development.…”

Section: Host Plant Resistancementioning

confidence: 99%

Sorghum [Sorghum bicolor (L.) Moench] breeding for resistance to leaf and stalk anthracnose, Colletotrichum sublineolum, and improved yield: Progress and prospects

Mofokeng¹,

Shimelis²,

Laing³

et al. 2017

Aust J Crop Sci

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Sorghum is one of the main staple food crops for millions of subsistence farmers in Africa. Biotic and abiotic challenges are the major production constraints of the crop. Amongst the sorghum biotic constraints, anthracnose is the major devastating disease causing up to 80% of yield reduction. The productivity and profitability of sorghum is limited by several biotic constraints, most notably anthracnose caused by the aggressive fungal pathogen Colletotrichum sublineolum. The most effective and environmentally responsible strategy to control anthracnose is through the incorporation of resistance genes. However, although several sources have been identified, the lack of information with regard to its genetic control of resistance has limited their adequate use in breeding programs. Additionally, the limitations of breeding regarding the leaf and stalk anthracnose resistance and also the need for evaluating materials for resistance and yield in different environments is of major importance. There is limited information about the combining ability, gene action and genetic effects and relationships between anthracnose resistance and grain yield which is required in devising appropriate strategies for developing resistant and high yielding sorghum varieties. This review provides theoretical basis of the progress and challenges for breeding sorghum for anthracnose resistance and improved yield.

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“…in Kabat and Bubák) is the fungal pathogen responsible for sorghum anthracnose (Crouch et al, 2006) and was first reported in Togo, West Africa in 1902 (Thakur and Mathur, 2000). The disease occurs worldwide, but is more commonly observed in tropical or subtropical environments where frequent rainfall, high relative humidity and warm temperatures enhance the development and spread of the disease (Casela et al, 2001;Hess et al, 2002;Marley et al, 2001;Néya and Le Normand, 1998;Ngugi et al, 2002;Thakur and Mathur, 2000;Thomas et al, 1996;Valério et al, 2005). In the United States, anthracnose is more prevalent in the Southern Plains and Southeastern States (Rosewich et al, 1998;Cardwell et al, 1989).…”

Section: Introductionmentioning

confidence: 99%

Field Assessment of Anthracnose Disease Response for the Sorghum Germplasm Collection from the Mopti Region

Erpelding¹

2010

American Journal of Agricultural and Biological Sciences

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Problem statement: Sorghum anthracnose (Colletotrichum sublineolum) is a highly variable pathogen and new sources of host plant resistance are required for the development of resistant sorghum varieties. Germplasm collections are an important source of host plant resistance and screening germplasm will be essential to identify new sources of resistance. Approach: The sorghum (Sorghum bicolor) collection from the Mopti region of Mali was inoculated with Colletotrichum sublineolum and evaluated for foliar anthracnose disease response in Isabela, Puerto Rico during the 2004 and 2005 growing seasons using a partially balanced lattice design with three replications. Results: A resistant response was observed for 45 of the 97 accessions in the collection and mean infection severity for the 52 susceptible accessions was 27.6%. An association was observed between resistance and the administrative district where the germplasm was collected. More than 50% of the accessions from the Bandiagara and Bankass districts showed a resistant response. The lowest frequency of resistant germplasm was observed for the Mopti district with 25% of the accessions showing a resistant response. The susceptible accessions from the Mopti district, however, showed the lowest mean infection severity. Approximately 44% of the accessions from the Douentza district showed a resistant response with the susceptible accessions showing the highest mean infection severity. These results suggest an association between annual rainfall and anthracnose resistance, with sorghum accessions from drier regions showing greater susceptibility. Anthracnose resistance also showed an association with sorghum race classification and race guinea accessions were more frequently resistant as compared to accessions classified as race durra or durra-bicolor. Conclusion: The results indicated that anthracnose resistant sorghum germplasm is frequent in the Mopti region of Mali and that ecogeographic origin and sorghum characterization information can be used to aid in germplasm selection or germplasm acquisition to identify anthracnose resistant sources.

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Reaction of sorghum genotypes to the anthracnose fungus Colletotrichum graminicola

Cited by 22 publications

References 7 publications

Evaluation of resistance in sorghum genotypes to the causal agent of anthracnose

Evaluation of resistance in sorghum genotypes to the causal agent of anthracnose

Sorghum [Sorghum bicolor (L.) Moench] breeding for resistance to leaf and stalk anthracnose, Colletotrichum sublineolum, and improved yield: Progress and prospects

Field Assessment of Anthracnose Disease Response for the Sorghum Germplasm Collection from the Mopti Region

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