Agronomic performance of peanut genotypes under high severity of ring spot in Alta Paulista
DOI:
https://doi.org/10.17648/sas.v1i1.6Keywords:
Arachis hypogaea L., Improvement Program, Viruses.Abstract
The peanut culture has great relevance in the agro-industrial activity in the Alta Paulista region in the state of São Paulo. The objective of this research was to evaluate the agronomic performance of peanut genotypes in Alta Paulista, under high severity of ring spot. The trial was sown on November 15, 2019, the closing date for peanut sowing, in the municipality of Tupã-SP. The design used was in randomized blocks, with 4 repetitions. The treatments were thirteen peanut genotypes, being twelve advanced strains: 17-1253 OL, 18-1952 OL, 18-1968 OL, 18-1969 OL, 18-2053 OL, 18-2087 OL, 18-2091 OL, 18- 2101 OL, 18-2136 OL, 18-2182 OL, 18-2246 OL, 18-2250 OL and a cultivar: BRS 423 OL, developed by Embrapa's Peanut Breeding Program. The plots consisted of two lines of three meters in length, spacing of ninety centimeters between lines, an interval of two meters between plots and a stand of 17 plants per linear meter. The following were evaluated: severity of ring spot, mass of 100 grains and yield of pods, with significant difference in all variables in relation to the different genotypes. The genotypes 18-2250 OL, 18-2136 OL and 18-2101 OL had the lowest annotation severity scores. The highest yields were obtained in the genotypes 18-2250 OL, 18-2136 OL, 18-1969 OL, 18-2101 OL and 18-2259 OL. Considering the severity of the ring spot and productivity, genotypes 18-2250 OL, 18-2136 OL and 18-2101 OL are recommended for cultivation in the Alta Paulista region.
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