BRS Deni - Super-sweet corn open-pollinated variety

Abstract

: BRS Deni is a super-sweet corn open-pollinated variety, developed and released by the Brazilian Agricultural Research Corporation (Embrapa) that combines high yield and good ear and grain quality and lower production costs. The grain can be consumed fresh or canned. over three generations for recombination and selection for yield, quality and agronomic traits. The last selection in With the recombined generations, the variety was tested in trials to evaluate yield, quality and agronomics traits, using the hybrids BRS Vivi, Tropical Plus and SWB 551 as checks. The evaluation trials were conducted in: Sete Lagoas/2015 (L1), Londrina/2015 (L2), Sete Lagoas/2016 (L3), Janaúba/2016 (L4), Londrina/2017 (L5), and Passo Fundo/2017 (L6) in a randomized block design with three replications and experimental plots with four 5-m rows, spaced 80 cm apart. In these trials, the following traits were evaluated: number of days to female flowering (FF), from seedling germination until 50% of the plants in the plot emit style-stigmas; plant height (PH, cm) and first ear height (EH, cm); prolificity (PR), based on the ratio of number of ears to number of plants per plot; grain yield at maturity (GY, t ha -1 ); unhusked ear yield of green corn (EY, tons/ha); ear length (LE, cm) and diameter (DE, mm) of unhusked ears at the green corn stage; number of grain rows per ear (NR); mean ear weight (EW, g); grain weight per ear (GW, g) at the green corn stage; and brix degrees (BR) computed as the mean of two samples of ground grains measured with a portable digital refractometer (Atago PALM-1). Analysis of variance and the Tukey mean test were performed using software GENES (Cruz 2006).