scholarly journals Intensity of angular leaf spot and anthracnose on pods of common beans cultivated in three cropping systems

2009 ◽  
Vol 33 (spe) ◽  
pp. 1931-1934 ◽  
Author(s):  
Rogério Faria Vieira ◽  
Trazilbo José de Paula Júnior ◽  
Hudson Teixeira ◽  
Clibas Vieira

With the purpose to evaluate the intensity of angular leaf spot (ALS) and anthracnose (ANT) on pods, nine genotypes of common bean were planted in three cropping systems: monocrop (MC), monocrop grown on trellises (MCT), and intercrop with maize (ICM). In MC, beans were planted 0.5 m apart. Trelisses were set up with 1.8 m high bamboos and beans were sown 0.65 m apart. In ICM, beans were planted simultaneously with maize and in its rows. This cereal was sown 1.0 m apart with four plants per meter. Each cropping system was an independent trial installed close to each other. Climbing genotypes of beans most susceptible to ALS had less diseased pods in ICM than in both MC and MCT, but the less susceptible genotypes, regardless of their growth type, as well as the susceptible bush and semiclimbing genotypes, were similarly attacked by ALS in the three systems. ANT on pods of the susceptible bean cv. Pérola was less intense in MCT than in MC, and less intense in ICM than in MCT. ANT seed transmission was 11 %, 9.1 %, and 4.4 % when seeds come from MC, MCT, and ICM, respectively.

2010 ◽  
Vol 28 (1) ◽  
pp. 57-71 ◽  
Author(s):  
George S. Mahuku ◽  
María Antonia Henríquez ◽  
Carmenza Montoya ◽  
Carlos Jara ◽  
Henry Teran ◽  
...  

2015 ◽  
Vol 14 (43) ◽  
pp. 2943-2948 ◽  
Author(s):  
Muhamba Tryphone George ◽  
Amos Chilagane Luseko ◽  
Nchimbi Msolla Susan ◽  
Mbogo Kusolwa Paul

2016 ◽  
Vol 10 (11) ◽  
pp. 238-245 ◽  
Author(s):  
Amos Chilagane Luseko ◽  
Nchimbi-Msolla Susan ◽  
Mbogo Kusolwa Paul ◽  
Gabriel Porch Timothy ◽  
Miryam Serrato Diaz Luz ◽  
...  

2002 ◽  
Vol 27 (1) ◽  
pp. 78-81 ◽  
Author(s):  
ALOISIO SARTORATO

Due to the increased importance of angular leaf spot of common bean (Phaseolus vulgaris) in Brazil, monitoring the pathogenic variability of its causal agent (Phaeoisariopsis griseola) is the best strategy for a breeding program aimed at developing resistant genotypes. Fifty one isolates of P. griseola collected in five Brazilian States were tested on a set of 12 international differential cultivars in the greenhouse. When inoculated plants showed symptoms but no sporulation was observed, they were transferred to a moist chamber for approximately 20-24 h. After this period of time, if no sporulation was observed, the plants were considered resistant; otherwise, they were considered susceptible. From the fifty-one tested isolates, seven different pathotypes were identified. No Andean pathotypes were identified; consequently, all isolates were classified as Middle American pathotypes. Pathotype 63-31 was the most widespread. Pathotype 63-63 overcame resistance genes present in all differential cultivars and also the resistance gene(s) present in the cultivar AND 277. This fact has important implications for breeding angular leaf spot resistance in beans, and suggests that searching for new resistance genes to angular leaf spot must be pursued.


2004 ◽  
Vol 96 (3) ◽  
pp. 1 ◽  
Author(s):  
Waldir Cintra de Jesus ◽  
Francisco Xavier Ribeiro Vale ◽  
Reginaldo Resende Coelho ◽  
Bernhard Hau ◽  
Laércio Zambolim ◽  
...  

2019 ◽  
Vol 76 (4) ◽  
pp. 321-327 ◽  
Author(s):  
Roberto Fritsche-Neto ◽  
Thiago Lívio Pessoa Oliveira de Souza ◽  
Helton Santos Pereira ◽  
Luís Cláudio de Faria ◽  
Leonardo Cunha Melo ◽  
...  

Author(s):  
Noureddine Benkeblia

Abstract Vegetable production in Jamaica, and throughout the world, faces many diseases that affect the yield and the quality of the fresh harvest produce. However, some diseases are more predominant than others. The most observed diseases of vegetables are anthracnose, leaf spot, club root, downy mildew, gray mold, mosaic and geminiviruses, early blight, septoria leaf spot and leaf rusts. Nevertheless, other diseases can also be found seriously affecting the grown vegetable. Greenhouse cropping systems are also affected by similar and other diseases such as septoria leaf spot, early blight, anthracnose, fusarium wilt, verticillium wilt, late blight, bacterial spot, bacterial speck, bacterial canker, gray mold, leaf mold, powdery mildew and elephant's foot disease. Although not specific to the country, other diseases are also found more frequently than others, and the frequency varies with the region and the cropping system (indoor or outdoor).


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