Abstract
In 2019, during a nematologic survey in Jaboticabal, Brazil, root-knot nematode Meloidogyne incognita parasitizing hops (Humulus lupulus) was identified with based on morphological characters of adults, esterase phenotypes (n = 16), and molecular analysis. Modified Koch’s postulates was carried out and after 90 days, the average total population recovered had different stages of development, with a reproductive factor (RF) of 4.81. This is the first report of H. lupulus as a host of M. incognita in the state of São Paulo and in Brazil.
Highlights
Humulus lupulus L. (Cannabaceae) is a creeping, herbaceous, perennial, and dioecious plant used mainly as a raw material in the beer brewing industry
After farmers efforts and management improvements, hop plants have been successfully cultivating in Brazil (Durello et al, 2019)
Hop seedlings of the Mantiqueira cultivar obtained from cuttings of vegetative parts of hop plants were planted in a field located in the region of Jaboticabal, Sao Paulo, Brazil (21°14′35.2′′S 48°17′05.8′′W) in October 2017
Summary
Humulus lupulus L. (Cannabaceae) is a creeping, herbaceous, perennial, and dioecious plant used mainly as a raw material in the beer brewing industry. Hop seedlings of the Mantiqueira cultivar obtained from cuttings of vegetative parts of hop plants were planted in a field located in the region of Jaboticabal, Sao Paulo, Brazil (21°14′35.2′′S 48°17′05.8′′W) in October 2017. The plants presented symptoms such as yellow leaves, reduced development and root galls (Fig. 1A, B).
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