Biodiv Sci ›› 1998, Vol. 06 ›› Issue (1): 27-30.DOI: 10.17520/biods.1998005

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Discovery of a new esterase phenotype in Meloidogyne javanica

YU Sheng-Fu, CHEN Yong-Fang   

  1. Department of Plant Pathology , Yunnan Agricultural University & Phytopathology Laboratory of Yunnan Province , Kunming  650201
  • Received:1997-04-03 Revised:1997-11-17 Online:1998-02-20 Published:1998-02-20

Abstract: In 1995 , a new esterase phenotype was found in a population of Meloidogyne javanica infecting tobacco in Lunan County of Yunnan Province , and the Rf value is 0. 47 and 0. 59 respectively. Morphological characters and differential host test suggested that the population belongs to M. javanica. However , the esterase phenotype was found to be different from that of M. javanica reported so far to absent a band ( Rf = 0. 55) . The new esterase phenotype is here designated as J2 for M. javanica. The possibility of a subspecies identity to accommodate the population with the new esterase phenotype is discussed.