Morphological Character Variations in Lasiodiplodia Species: Pathogen of Inflorescence Dieback in Cashew Growing Ecologies of Nigeria | Chapter 8 | Current Research Trends in Biological Science Vol. 1
Nine
isolates of Lasiodiplodia theobromae were collected from cashew inflorescences
showing typical symptoms of dieback disease in nine different farms belonging
to various cashew growing ecologies of Nigeria. The result revealed that most
of the Lasiodiplodia species isolates exhibited significant differences in
morphology, colour and spore dimensions. The colony growth rate of
Lasiodiplodia species range from 11.95 mm to 14.17 mm, colony texture and
colour of the isolates in the obverse were fluffy dark mouse grey, fluffy mouse
grey, fluffy olivaceous grey or fluffy groh grey while the reverse colour of
the isolates was either greyish blue or sky grey. Sporulation was observed at
varied degrees in all the Lasiodiplodia species isolates except in isolates
from Oro and Ejule and likewise is the numbers of pycnidia produced varied in
all the isolates across growing ecologies. Significant variations were observed
in the characters and morphology of the Lasiodiplodia species isolates causing
inflorescence dieback of cashew in Nigeria. Conidia of all isolates are
septated with single septa but the septa sizes varies and conidia sizes also
differ. Eigenvalues and variance proportion consistently decreased among
selected characters and the proportional contribution of each character to the
total variance also varied in dimension and quantity. Four clusters
significantly evolved in the dendogram with 2, 2, 4 and 1 isolates within each
cluster.
Author(s) Details
Dele Omoyele Adeniyi
Department of Plant Biology, University of Ilorin, P.M.B. 1515 Ilorin, Nigeria and Plant Pathology Section, Cocoa Research Institute of Nigeria, P.M.B. 5244, Ibadan, Nigeria.
View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/157
Author(s) Details
Dele Omoyele Adeniyi
Department of Plant Biology, University of Ilorin, P.M.B. 1515 Ilorin, Nigeria and Plant Pathology Section, Cocoa Research Institute of Nigeria, P.M.B. 5244, Ibadan, Nigeria.
View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/157
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