ECOLOGICAL STUDIES ON TILE SYMBIOSIS OF TER ITOMYCES ...

(1) xylaria nIqri]2ex Known ýrm Africaq Indial, Ceylon,
Indonesia mind the PhL111piness (Dakshl 19519 Dose 19239 Dannja
1958s Ifelm 1977)9
Mar authors have also recorded the presence of 2 different
forms of growth of X. nitirij! ex frcm incubated combs (Patch 1906i 1913b)o
(a) Loosoly structured sterile rhizomorphso On Isolation the
cultures also produce such rhizomorphze T'he general process of
development appears to follow the same pattern wherever recorded*
The rhizo=rphs develop as loose white colums from the comb after'2
days incubation. Dy I weelt much of the rhizomorph Is blackened amA
hard, p and after 3-4 weeks It has diede
(b) Conidla-bearing stroma. * These are small thin filamental
which may branchq covered In a white powdery coating of conidial
gradually blackening from the base up, On Isolation these give a
slow growing colony which produces small stroma up to 0,5 em In
height.
PQtch (. 1906* 1913b) cAmcluded that the production of the different
f0rW was dePondant on the amount of moisture present In-the combo
drier combs Producing the 2nd type* In these experiments some fungus
combs produced both typen,
Other forms of &Irtria, are produced when the comb In ab=%doned, In
the nest by the termiteso These are the conidial forms ascosporous
form and sclerotial form* Due to the saultiplicity of forms of
X. niorlpen 2 species of Ularia (X,,
_nlgrlj!!
L9 Wid X*- furca_ta) were
sometimea considered to be pregent in one : fungu COMb, (Petch 1906,
21*6.