Parasitismo de Meloidogyne spp. em plantas nativas do oeste paranaense e variabilidade genÃtica de populaÃÃes de Meloidogyne incognita raÃa 3 / Parasitism of Meloidogyne spp. on native plants in Western ParanÃ, Brazil, and genetic variability among populations of Meloidogyne incognita race 3

AUTOR(ES)

Vanessa Aparecida Antes

DATA DE PUBLICAÇÃO

2008

RESUMO

The aim of this work was to study the parasitism of Meloidogyne incognita on native plants from Western ParanÃ, Brazil, as well as to assess the genetic variability among different populations belonging to the race 3 of this nematode by RAPD technique. Natural infection was studied in thirty six native plant species, which were identified on the basis of the perineal pattern from mature females and esterase phenotype. Native species that showed no infestation on the root system were inoculated with 1.000 eggs and/or J2 of M. incognita. After 60 days, the inoculated plants were evaluated regarding the number of galls and the number of eggs/or J2 per root. The genetic variability from different single female populations of M. incognita race 3 was studied by RAPD technique, having been tested 10 primers. The native plants that were susceptible to M. incognita parasitism were Rabo-de-Bugio (Lonchocarpus muehlbergianus Hassl.), Ipà Roxo (Tabebuia impetiginosa Mart. Ex DC. Standl), Sanga DâÃgua (Croton urucurana Boill), Ipà Amarelo (Tabebuia ahrysotricha Mart ex DC. Standl.), Genipapo (Genipa americana L.), Ariticum Comum (Rollinia mucosa (Jacq.) Baill.) and Aroeira Vermelha (Schinus terebinthifolius Raddi.). On the other hand, M. javanica was found parasiting Cafà de Bugre (Cordia ecalyculata Vell.), Guatambu Vermelho (Aspidosperma subincanun Mart.) and Tarumà Branco (Cytrarexllum myruanthum Cham.). The DNA polymorphism showed that there was genetic variability among populations from a same race (3) of M. incognita, allowing the separation of them into five genetic groups, through reactions with the primers (O)AK20, A10, AQ12, AS08 and (OP)F01

ASSUNTO(S)

meloidogyne incognita meloidogyne javanica agronomia diversidade genÃtica. genetic diversity rapd meloidogyne incognita meloidogyne javanica plantas nativas native plants rapd

Documentos Relacionados

• IdentificaÃÃo de Meloidogyne spp. em reservas legais e avaliaÃÃo do parasitismo de Meloidogyne incognita RaÃa 03 e M. javanica em plantas nativas do oeste paranaense
• Levantamento de Meloidogyne incognita em lavouras de algodÃo no noroeste do Paranà e seleÃÃo de genÃtipos de algodoeiro com resistÃncia a Meloidogyne incognita raÃa 3
• Diversidade genÃtica de populaÃÃes naturais de Anthonomus grandis Boheman (Coleoptera: Curculionidae)
• Estrutura genÃtica de populaÃÃes naturais de Colophyllum brasiliense Camb. na bacia do Alto Rio Grande.
• Genetic variability within race 65 of Colletotrichum lindemuthianum by RAPD markers and anastomosis grouping.