REPRODUÇÃO DE PRATYLENCHUS BRACHYURUS EM DIFERENTES NÍVEIS DE INÓCULO E TEMPO DE AVALIAÇÃO EM TRÊS CULTIVARES DE SOJA
Keywords:evaluation time, population level, root lesion nematodes
The objective of this study was to test Pratylenchus brachyurusinoculum levels and evaluation time in three soybean cultivars under greenhouse conditions. The experiments were conducted with cultivars MG/BR 46-Conquista, FMT Tabarana and TMG 115 RR in a completely randomized design with a 5x4 factorial scheme (five population levels x four evaluation times). Population levels included 0, 300, 600, 900, and 1,200 P. brachyurus specimens per pot, and plants were evaluated at 60, 75, 90, and 105 d after inoculation. Nematode reproduction factor was calculated after each time period. The data showed that 75 to 90 d after inoculation and 625 to 961 P. brachyurusper plant are good parameters to use in evaluating soybean genotype responses under greenhouse conditions.