Avaliação de genótipos de feijão em ensaios multi-ambientes no estado de Santa Catarina
Common bean (Phaseolus vulgaris L.) is a legume of great importance for developing countries. Despite being considered a staple food on the Brazilian cuisine, as well as in other countries, common beans still have a relatively low productivity. Thus, the use of more rustic genotypes in relation to d...
| Autor principal: | Baldin, Rafael Carlos |
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| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/5133 |
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| Resumo: |
Common bean (Phaseolus vulgaris L.) is a legume of great importance for developing countries. Despite being considered a staple food on the Brazilian cuisine, as well as in other countries, common beans still have a relatively low productivity. Thus, the use of more rustic genotypes in relation to diseases and more adapted to the environmental conditions becomes essential to supply a demand of this crop. Thus, the objectives of this work were to evaluate the adaptability and stability of common bean genotypes at differentenvironmements, in addition to selecting the genotypes with greater resistance to anthracnosis and to angular leaf spot. The GGE and AMMI methods were used to estimate the adaptability and stability of the common bean genotypes whichwere evaluated in multi-environment trials conducted at different sowing times, distributed in 9 locations of Santa Catarina state, during the 2014 and 2015 , totalizing 17 environments. All trials were conducted in a randomized complete block design with four replications. A total of 28 commonbean genotypes were evaluated, being 24 linesfrom different breeding programs and four commercial cultivars, used as checks. According to the AMMI model, it was observed that the genotype CHP 97-09-15-41 is the most productive, while the LP 11-363 and CHC 01- 175-1 are the most stable genotypes. Otherwise, the GGE biplot model showed that the CHC 01-175-1 is the most stable and productive among the tested genotypes, being thus considered as the ideal genotype. The environments Chapecó (safra) and Chapecó (safrinha) were considered the most representative and discriminating environments for the evaluation and recommendation of genotypes in the studied region. The trials seeking to select genotypes with a greater resistance to anthracnosis and angular leaf spot were conducted during the agricultural years of 2014 and 2015, in the location Chapecó, Santa Catarina state. The genotype CHC 01-175-1 was 11.6% more productive than BRS Campeiro and 46.46% more productive than Pérola, due to the adjusted average of the two years of cultivation. The CHP 99-65-24 genotype showed greater sensitivity to anthracnosis in the pods, through the comparison of means test, but it did not differ statistically from the check SCS 202 Guará. The genotype TB 03-26 differed from the others genotypes in relation to the angular leaf spot. |
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