Plant-Parasitic Nematodes Associated with Garlic in Yemen
Journal Title: Egyptian Journal of Agronematology - Year 2015, Vol 14, Issue 1
Abstract
survey was undertaken to determine the frequency and abundance of plant-parasitic nematodes associated with garlic (Allium sativum L.) in major garlic production governorates in Yemen. Twenty nematode genera were found in association with garlic in Sana'a, Ibb and Hadramout governorates of which Antarctenchus, Aphelenchoides, Aphelenchus, Basiria, Boleodorus, Ditylenchus, Helicotylenchus, Heterodera, Hoplolaimus, Meloidogyne, Microposthonia, Nothanguina, Pratylenchus, Rotylenchulus, Rotylenchus, Scutellonema, Tetylenchus, Tylenchorhynchus, Tylenchus and Zygotylenchus. All nematode genera except Aphelenchus, Helicotylenchus, Meloidogyne and Tylenchorhynchus have been reported for the first time on garlic in Yemen. The most prevalent plant nematode genera associated with garlic cultivars in all surveyed districts were Aphelenchus, Ditylenchus, Pratylenchus, Tylenchorhynchus and Tylenchus. The largest number of nematode genera was recorded in Sana'a governorate (19 genera) compared to Ibb (14 genera) and Hadramout (12 genera). Antarctenchus, Hoplolaimus, Microposthonia, Nothanguina, Scutellonema and Zygotylenchus genera were only found in Sana'a governorate, while Heterodera was recorded only in Ibb governorate. The most serious pests on garlic, stem and bulb nematode (Ditylenchus) exhibited the highest average population density of 4214 nematodes/250gm soil with frequency of occurrence 49%. Therefore, effects of nematode damage on growth, vigor and yield of garlic need further investigation.
Authors and Affiliations
Mohamed Saeed
Keywords
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