An Aphelenchoides sp. nematode Parasitic of Polianthes tuberosa in the Mekong Delta.

ABSTRACT: Polianthes tuberosa is a commercially valuable flower crop in the Mekong Delta of Vietnam that is propagated by the harvesting and planting of bulbs. The cultivation of P. tuberosa is complicated by an endemic nematode infection that damages a high proportion of the plants. Based on morphological criteria and ribosomal RNA gene sequencing, we have determined that the infection is caused by an Aphelenchoides sp. nematode and is most likely Aphelenchoides besseyi. By scoring various parts of harvested plants with flowers for the presence of viable nematodes over a period of six months, we determined that the nematode is an ectoparasite that can survive the intercrop periods, especially in the bulbs that are used to plant new crops. A comparison of farming practices in the Mekong Delta failed

SUBMITTER: Thi Thu Cuc N 

PROVIDER: S-EPMC2586507 | biostudies-literature | 2007 Sep

REPOSITORIES: biostudies-literature