Productive potential and resistance to virosis in lines and cultivars of peanuts in the region of Tupa, Sao Paulo
DOI:
https://doi.org/10.17648/sas.v1i1.27Keywords:
Arachis hypogaea L., Peanut breeding, virusAbstract
New peanut lines selected from the breeding programs hould also be planted in large plots next to grower´s fields. Nine peanut breeding lines and cultivars were evaluated in Tupã, SP, during the 2019/2020 growing season in an experiment comprising three planting dates in large plots of six rows of ten meters. Cultivation management was as the indicated for the peanut crop in São Paulo. Plots of the second and third planting dates were infested by vírus, with symptoms characteristic of GRSV (Groundnut Ringspot Virus). Each of these plots was then evaluated for the number of plants with vírus symptoms. Yield data showed the highest values in the first planting, and a decrease in the second and third planting date. Among all genotypes tested, line 11.20 showed the highest yield especially at the first planting date. Line 10.677 showed a good yield stability and the highest average yield over the three planting dates. This line also presented the lowest number of vírus infested plants, indicating a potential for vírus resistance.
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