Severity Evaluation Methods in Common Bean Recurrent Selection Programme for Resistance to Angular Leaf Spot

2014 ◽  
Vol 162 (10) ◽  
pp. 643-649 ◽  
Author(s):  
Breno A. Rezende ◽  
Ângela de Fátima B. Abreu ◽  
Magno Antonio P. Ramalho ◽  
Elaine A. de Souza

2010 ◽  
Vol 10 (3) ◽  
pp. 232-237 ◽  
Author(s):  
Lúcio de Oliveira Arantes ◽  
Ângela de Fátima Barbosa Abreu ◽  
Magno Antonio Patto Ramalho

The genetic progress (GP) was evaluated after eight cycles of recurrent selection for resistance to angular leaf spot in common bean and indirect gain for yield and grain type. The base population (Cycle-0) was obtained from the diallel cross of seven lines with carioca grain and ten resistance sources. To obtain Cycle I, the most resistant S0 plants of Cycle 0 were intercrossed. The same procedure was adopted in the subsequent cycles. GP for resistance to the pathogen was estimated by the overall average of the progenies of each cycle in comparison with control Carioca MG and for productivity in comparison to the controls Carioca MG and Pérola. Lines of the first six cycles were used for grain type. No GP was detected for resistance to angular leaf spot. However, the indirect yield gain was 2.3% and 2.5% in the selection for grain type, with values similar to those obtained by direct selection for these traits.



Crop Science ◽  
2020 ◽  
Vol 60 (2) ◽  
pp. 751-758
Author(s):  
Samira Santiago Librelon ◽  
Paula Furtado de Pádua ◽  
Ângela de Fátima Barbosa Abreu ◽  
Magno Antonio Patto Ramalho ◽  
Elaine Aparecida de Souza


2014 ◽  
Vol 44 (4) ◽  
pp. 583-587 ◽  
Author(s):  
Danuza Araújo de Souza ◽  
Fernanda Aparecida Castro Pereira ◽  
Juliana Andrade Dias ◽  
Monik Evelin Leite ◽  
João Bosco dos Santos

This study was realized with the objective of verifying the resistance to white mold of common bean progenies derived from recurrent selection for resistance to angular leaf spot. The plant material used was obtained from a program of recurrent selection, which was started by crossing seven lines with carioca grain type with ten sources of resistance to angular leaf spot according to the partial diallel scheme. To evaluate the resistance to white mold, it was verified the reaction of 17 parents plus 35 selected progenies, to oxalic acid. Huge heterogeneity among the parents was observed, showing that some of them have resistance alleles to white mold, and thus, there is a possibility of recombine these alleles through the recurrent selection and obtaining progenies with high levels of resistance. Even in initial cycles, some progenies exhibited resistance to white mold similar to the one of cultivar 'G-122', which presents good level of resistance to this disease. This leads to infer that the original population already had some level of physiological resistance for the reaction to absorption of oxalic acid, and also for resistance to angular leaf spot. Thus, among the selected progenies for resistance to angular leaf spot, grain type and high yield, at least four progenies have resistance to white mold similar to the source of resistance 'G-122'.



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 ◽  
...  


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