Evaluation of oil palm Elaeis guineensis Jacq. progenies for Fusarium wilt tolerance using African countries Fusarium oxysporium f. sp. elaeidis
Journal Title: Journal of Agricultural and Crop Research - Year 2018, Vol 6, Issue 4
Abstract
Evaluation of oil palm progenies for Fusarium wilt tolerance using West African Fusarium oxysporium f, sp. elaedis had been studied. The objective of the study was to determine the pathogenicity of F. oxysporium species on oil palm progenies. The results revealed that some F. oxysporium f. sp. elaeidis species were virulent to some oil palm progenies and not to few progeny seedlings. The highest mean of initial height was recorded by progeny 7 with 24.97 in F. oxysporium 1, while the least mean was 17.29 in F. oxysporium 13. The highest mean final height was recorded by progeny 5 with 78.67 in F. oxysporium 4, while the least mean final height was 36.78 also in F. oxysporium 4 by progeny 1. The highest mean initial height of control treatment was 20.35, while the least mean was 19.04. The highest mean final height of control treatment was 70.47 while the least mean was 63.56. The F – statistics of the initial and final heights indicated that all the progenies were significantly different from the control treatment. The initial height of different progenies showed that the seedlings had similar height measurements pre inoculation. However, the final height of different progenies showed that they all responded to fertilizer application, although there were variations in final height measurements at post inoculation when compared with the control treatment. After forty days of post inoculation, there were no visible external and internal symptoms on the seedlings. From fifty to Sixty days post inoculation; external symptoms of vascular disease began to appear. Post inoculation also shows high level aggressiveness of isolate 4 as well as the ability to colonize the roots and shoot of the seedlings. The seedlings infected with F. oxysporium f. sp. elaeidis showed yellowish colour, stunted growth, loss of vigour, chlorosis and necrosis. Bole discoloration was seen in the internal tissue, as a clear symptom and indication of Fusarium wilt disease. The control treatment seedlings distinguished itself with normal height and creamy bole colour when compared with the infected seedlings. The ability of Fusarium species to cause infection indicates virulence, while different progenies showed different degrees of susceptibility and tolerance. F. oxysporium 4 exhibited high virulence when compared with other Fusarium species.
Authors and Affiliations
Chidi N. I, Adekunle A. A, Eziashi E. I, Samuel T. O
Keywords
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- EP ID EP543392
- DOI 10.33495/jacr_v6i4.18.142
- Views 191
- Downloads 0
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