Some mycological problems associated with fern prothalli Pteridium aquilinum Kuhn

Fahim, Moustafa M (1956) Some mycological problems associated with fern prothalli Pteridium aquilinum Kuhn. PhD thesis, University of Glasgow.

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This thesis describes a series of investigations into the mycological problems affecting the prothalli of Pteridiuni aquilinum Kuhn. This prothallus has been chosen because it consists of a plate of almost unspecialized cells, only one cell thick over a large part of its area. It can be grown easily under precisely controlled conditions and it appears to be an excellent "tool" for the study of certain host-parasite relationships. The investigation has, involved four, phases: (1) The establishment of satisfactory methods for bracken spore decontamination and the study of the germination and the growth prothalli in pure cultures Treatment with 0.1% mercuric chloride solution for one minute has been found to be a satisfactory method for decontamination. It has, been found that part of the falling, off of power of spore germination and prothallial growth in pure cultures is associated with ageing of the spores, The results show that a proportion of the prothalli are non autotrophic and that these require a factor or factors which can he .provided by some contaminant fungi, (2) A general survey of the effect of common pathogens on prothalii was carried out with two objectant (a) The isolation of pathogens producing disease in nature. Only two actively pathogenic species of fungi hare been found and a diagnosis and description are given of one of these as new species of Coniothyrium. (b) The study of the effect of common pathogens of higher plants on prothalli. The prothalli have been found to be susceptible to the attack of a wide range of rot, mould and damping off fungi but not by those causing wilt and certain other diseases. (3) Detailed study of the effect of Botrytis cinerea Pers. on prothalli, (a) preliminary study of the effect of temperature and media on growth and sporulation of Botrytis oinerea has been carried out. Abundant sporulation occurs at 20

Item Type: Thesis (PhD)
Qualification Level: Doctoral
Additional Information: Adviser: S A Hutchinson
Keywords: Botany
Date of Award: 1956
Depositing User: Enlighten Team
Unique ID: glathesis:1956-73262
Copyright: Copyright of this thesis is held by the author.
Date Deposited: 14 Jun 2019 08:56
Last Modified: 14 Jun 2019 08:56

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