J. L. C. Díaz

Comparação de métodos de análise de adaptabilidade e estabilidade fenotípica em feijoeiro-comum

The objective of this work was to compare methods for studying phenotypic adaptability and stability in common beans (Phaseolus vulgaris). Grain yield evaluations were carried out in 71 trials with 16 common bean genotypes, and using six methods. The association among the methods was determined by Spearman correlation. Cruz and Eberhart & Russel methods were highly correlated. Lin & Binns, Lin & Binns modified and Annicchiarico methods were also highly correlated. Intermediate correlations were observed between Eberhart & Russel and additive main effects and multiplicative interaction model (AMMI) methods. The joint utilization of highly correlated methods is not recommended. Therefore, only one of the methods among Eberhart & Russel, Cruz and AMMI should be used in association with Lin & Binns, Lin & Binns modified or Annicchiarico, since there was no correlation among methods of these two groups. Lin & Binns and Annicchiarico methods are indicated for isolated utilization, because they are simple to use and allow the classification of environments in favorable and unfavorable, and the identification of the most adapted and stable genotypes among the most productive ones.

Indicação de cultivares de feijoeiro-comum baseada na avaliação conjunta de diferentes épocas de semeadura

The objectives of this work were to verify the genotype x growing seasons interaction in common beans, to evaluate the importance of the complex interaction and to verify the need to indicate cultivars for each growing season, in a region of intermediate altitude of Parana and Santa Catarina states, Brazil. Grain yield data of 16 genotypes in 12 trials carried out in two growing seasons were used. Variance analysis was performed with the decomposition of genotype x environments interaction. The percentage of complex interaction was estimated between pairs of environments and also by the Spearman correlations between the growing seasons, using genotypes grain yield means and stability parameters obtained from Annicchiaricos methodology. Differences among growing seasons and genotype x growing seasons interaction were detected; however, with lower importance than others double interactions with genotypes. The Spearman correlations between growing seasons showed that genotype x growing seasons interaction is predominantly simple. The complex percentage mean of genotypes x growing seasons interaction between pairs of environments showed that the alteration of classification is the same between pairs of a same growing season or between pairs of different growing seasons. It is not necessary to indicate common beans cultivars to each growing season, in the studied region.

BRS Estilo: common bean cultivar with Carioca grain, upright growth and high yield potential

BRS Estilo is a new common bean cultivar with Carioca grain, suitable for cultivation in 12 states in the five macro- regions of Brazil. With a mean yield of 2,134 kg ha-1 it exceeds the control by 6.3 %, has a high yield potential (4011okg ha-1), upright growth and is resistant to lodging and anthracnose.

BRS Esplendor Common bean cultivar with black grain, upright growth and disease resistance

BRS Esplendor is a common bean cultivar with black grain, suitable for 12 Brazilian states. The mean productivity is 2,156 kg ha-1, by 7.5 % higher than of controls, has a high yield potential (4,120 kg ha-1), upright growth, high tolerance to lodging and high resistance to anthracnose, fusarium wilt and common bacterial blight.

BRS Notável: a medium-early-maturing, disease-resistant Carioca common bean cultivar with high yield potential

BRS Notavel is a common bean cultivar with carioca grain, suitable for cultivation in 20 Brazilian states. It is a medium- early-maturing cultivar, with an average yield of 2,261 kg ha -1 , 8.5% higher than the controls, a high yield potential (4,472 kg ha -1 ),

Common bean cultivar BRS Ametista with large Carioca grains and disease resistance

BRS Ametista is a common bean cultivar with Carioca grain and yields similar to cultivar Perola, but with larger grain size, resistance to anthracnose and Fusarium wilt. It is recommended for 18 states in all regions of Brazil and can be planted on over 95% of the area used for common bean in the country.

BRS Esteio: common bean cultivar with black grain, high yield potential and moderate resistance to anthracnose

BRS Esteio is a common bean cultivar with black grains of excellent cooking quality, suited for cultivation in 21 Brazilian States. In 77 trials of Value for Cultivation and Use, the cultivar had a normal cycle (90 days), an average yield of 2,529 kg ha-1, which is 8.1% higher than that of the control cultivars, a high yield potential (4,702 kg ha-1), upright growth, tolerance to lodging, and moderate resistance to anthracnose.