African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12484

Full Length Research Paper

Seed abnormalities and associated mycoflora of rain-fed wheat (Triticum aestivum L.) in South Western Nigeria

O. A. Enikuomehin
Department of Crop Protection, University of Agriculture, P. M. B 2240, Abeokuta, Nigeria.
Email: [email protected]

  •  Accepted: 14 May 2005
  •  Published: 31 July 2005

Abstract

 

The health of wheat seeds produced under rain-fed conditions in South Western Nigeria was investigated. There were more abnormal (1.0 – 79.7%) than normal (10.7 – 28.7%) seeds.  Forms of seed abnormality observed include wrinkled seeds (64.2 – 79.7%), entirely discoloured seeds (1.0 – 12.5%), seeds with discoloured embryo (germ) (1.2 – 1.5%) and brush (0.25 – 1.25%) ends.Fusarium graminearum and Helminthosporium sativum were associated with all seeds, but at higher levels in abnormal (F. graminearum, 0.5 – 78.5%; H. sativum, 2.5 – 86.0%) than normal seeds (F. graminearum, 2.25%; H. sativum, 0.75%). Viability of abnormal seeds was 1.50 – 32.0% which is much lower than the 88.0% germination of normal seeds.

 

Key words: Fungi, seed health testing, seed discolouration, wheat.