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CULTURE STUDIES ON THURETELLOPSIS PEGGIANA KYLIN 1
Author(s) -
Richardson Norman,
Dixon Peter S.
Publication year - 1970
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.1529-8817.1970.tb02374.x
Subject(s) - biology , botany , germination
SUMMARY Information on the life history and development of Thuretellopsis peggiana Kylin (Cryptonemiales) has been obtained additional to that first given by Kylin in 1925. Culture studies showed the life history to consist of morphologically dissimilar gametangial and tetrasporangial phases. Examination of plants from, field material indicated carposporophyte development similar to that described by Kylin. Spermatangia were found in field‐collected material also bearing carpogonial branches. Monosporangia were observed on field and cultural material of gametangial plants and on tetrasporangial plants in culture. A crustose tetrasporangial phase arose in culture from germinating carpospores under a photoperiod of 16– hr and formed tetrasporangia under a photoperiod of 9–hr. Germination of tetraspores yielded plants similar in morphology to gametangial plants collected in the field. The present study of the life history of T. peggiana and its crust, which has some similarity to Erythrodermis allenii , complements previous observations on the relationship between Halarachnion ligulatum and Cruoria rosea (Gigartinales). Observations on the arrangement of carpogonial and. auxiliary cell branches suggest the need for very close scrutiny of characters in cultured material.