Ricardo Lima de Castro

BRS 374 - wheat cultivar

BRS 374 is a wheat cultivar developed by Embrapa. It resulted from a cross between the F1 generation of PF 88618/Coker80.33 and Frontana/Karl. BRS 374 belongs to the soft wheat class, has a low plant height, a high potential grain yield, and white flour.

Número ideal de amostras para classificação comercial de cultivares de trigo no Brasil

The objective of this work was to estimate the optimal number of samples for commercial classification of wheat ( Triticum aestivum ) cultivars for gluten strength average, in the states of Rio Grande do Sul and Parana, the main wheat producing regions in Brazil. The alveography analysis results of grain samples, from competition assays of three wheat cultivars (up to 280 experiments in 11 years), were used. The optimal number of samples was estimated based on the properties of the mean sampling distribution by adaptation region, in the states of Rio Grande do Sul and Parana. The optimal number ranged from 13 to 22, 30 to 49, and 121 to 197 samples per state, respectively, for to error margin of 30, 20, and 10 gluten strength units (W), with minimum of 7, 16, and 63 samples per adaptation region and per state for error margin of 30, 20 and 10 W, respectively. The optimal number of samples for commercial classification of wheat cultivars, in the states of Rio Grande do Sul and Parana, is of at least 13 samples per state and of 7 samples per adaptation region and per state for error margin of 30 W, which are higher values than those used by breeders for classification.

Uso do germoplasma da Embrapa nos programas de melhoramento de trigo no Brasil

The wheat breeding program of Embrapa has an important role in the history of this cereal in Brazil, releasing more than one hundred new cultivars to different regions of the country in almost forty years of existence. However, is not possible assign its importance only to the number of cultivars, but also the impact of their germplasm in other brazilian wheat breeding programs. The objective of this study was to quantify the importance of Embrapas germplasm in the brazilian wheat breeding programs. Were analyzed the genealogies of all wheat cultivars indicated for growth since 2005 and 2012, by institution. During the study period, the average participation of Embrapas germplasm on cultivars of other institutions was 58.7%, with emphasis to Biotrigo Genetica, CCGL TEC and OR Melhoramento de Sementes Ltda, respectively, in which use was 100%, 97.5% and 87.7%.