Journal of
Entomology and Nematology

  • Abbreviation: J. Entomol. Nematol.
  • Language: English
  • ISSN: 2006-9855
  • DOI: 10.5897/JEN
  • Start Year: 2009
  • Published Articles: 122

Full Length Research Paper

Effect of two species of arbuscular mycorrhizal fungi inoculation on development of micro-propagated yam plantlets and suppression of Scutellonema bradys (Tylenchideae)

Atti Tchabi
  • Atti Tchabi
  • Université de Lomé, Ecole Supérieure d’Agronomie, Département de la Défense des Cultures, Laboratoire de Virologie et de Biotechnologie Végétales (LVBV). BP 1515 Lomé, Togo.
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Fabien C. C. Hountondji
  • Fabien C. C. Hountondji
  • Université de Parakou, Ecole Nationale Supérieure des Sciences et techniques Agronomiques de Djougou.
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Bisola Ogunsola
  • Bisola Ogunsola
  • International Institute of Tropical Agriculture (IITA), Oyo Road, Ibadan, Nigeria.
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Louis Lawouin
  • Louis Lawouin
  • Université de Parakou, Ecole Nationale Supérieure des Sciences et techniques Agronomiques de Djougou.
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Danny Coyne
  • Danny Coyne
  • International Institute of Tropical Agriculture (IITA), Oyo Road, Ibadan, Nigeria.
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Andres Wiemken
  • Andres Wiemken
  • Plant Science Center Zurich-Basel, Institute of Botany, University of Basel, Hebelstrasse 1, CH-4056 Basel, Switzerland.
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Fritz Oehl
  • Fritz Oehl
  • Agroscope Reckenholz-Tänikon Research Station ART, Ecological Farming Systems, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland.
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  •  Received: 29 November 2015
  •  Accepted: 19 February 2016
  •  Published: 29 February 2016

Abstract

Using two commercially available arbuscular mycorrhizal fungal (AMF) products, one based on Funneliformis mosseae and the other on Glomus dussii, an experiment was conducted to assess their effect on yam growth and ability to suppress nematode damage in pots. Four yam cultivars (cvs) were used: two Dioscorea alata cvs (TDa98-01183 and TDa98-165), and two Dioscorea rotundata cvs (TDr97-00551 and TDr 745). Micropropagated yam plantlets were inoculated either with F. mosseae or with G. dussii at the stage of transplanting into 2L pots and - one month later - with 500 vermiform Scutellonema bradys. The plantlets were grown for further six months in the greenhouse at IITA-Ibadan. The results showed that the presence of AMF tended to lead to improved growth of yam, especially D. alata cvs, as compared with the non-arbuscular mycorrhizal control plants. When challenged with the yam nematode S. bradys, plantlets of the two D. alata cultivars pre-inoculated with F. mosseae and cv TDr97-00551 pre-inoculated with G. dussii yielded significantly higher tuber weights compared to non-AMF control plantlets. S. bradys densities on yam plantlets pre-inoculated with AMF were generally suppressed, although no differences were observed in visible damage scores, which remained low or absent across treatments.
 
 
Key words: Bio control,  Scutellonema bradys, suppression, yam growth.