Kapraun df; Bailey Jc 1992

• Authors: Kapraun df; Bailey Jc
• Title: Karyology and cytophotometric estimation of nuclear dna variation in seven species of ulvales chlorophyta
• Location: Japanese journal of phycology, 40 (1). 1992. 13-24.
• Abstract: chromosome complements of 1 n = 8-12 are reported for seven species (blindingia marginata, b. minima, enteromorpha clathrata, e. linza, e. prolifera, ulva currata, u. fasciata) of ulvales (chlorophyta) from coastal north carolina (usa) microspectrophrotometry with the dna-localizing fluorochrome hydroethidine is used to estimate nuclear genome sizes. incorporation of fluorescence values for the angiosperm Antirrhinum majus l. and the green alga cladophora albida (hudson) kuetzing with known 2 c dna contents permitted quantification of if values for the ulvales. in the seven species examined, 2 c dna contents range from 0-.6-1.0- pg. the absence of a positive correlation between estimated genome size and 1 n chromosome complement excludes the possibility that speciation has resulted exclusively from loss or gain of chromosomes and associated genome. evidence in support of fusion/translocation processes is discussed.