A record of 84 plant species in 32 families that are hosts to the root-knot nematode species found in Argentina is presented. The genus Meloidogyne appears to be widely distributed in the country, with Meloidogyne incognita and M. javanica the most frequently detected species. Other species found in Argentina include M. arenaria, M. cruciani, M. decalineata, M. hapla, and M. ottersoni. The pres...

A total of 1,256 populations of Meloidogyne incognita and 442 populations of M. arenaria were collected from vegetables in eight districts of Uttar Pradesh, India. Host differentials were used to identify the host race of each population. All four host races of M. incognita were present in six of the eight districts. In the other two districts, only host races 1, 2, and 4 were found. Although f...

<p>Como parte de los estudios en curso del género Polycarpon (Caryophyllaceae) y la preparación su tratamiento para Flora Argentina, presentamos aquí una nota taxonómica sobre identidad nombre P. apurense. Un espécimen preservado P es designado como el lectotipo este nombre. Se discute se descarta sinonimia con prostratum, recurrente literatura, base algunos caracteres morfológicos hábito...