Sexuality in Pythium Sylvaticum: Heterothallism
- 1 July 1967
- journal article
- research article
- Published by Taylor & Francis in Mycologia
- Vol. 59 (4), 589-595
- https://doi.org/10.1080/00275514.1967.12018452
Abstract
SUMMARY Pairings of 5 heterothallic isolates of Pythium sylvaticum in all possible combinations revealed the existence of 2 sexually compatible groups of isolates. Tracings of gametangial hyphae leading to the formation of over 100 oospores showed that 3 heterothallic isolates produced only antheridia whereas 2 produced only oogonia. The nature of the line of contact between male and female isolates permitted prediction of the sex of the parental isolates; male and female isolates were found on the smooth and diffuse sides of the reaction line, respectively. Evidence suggestive of a possible hormonal system controlling the initiation of gametangial initials was found.Keywords
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