- 著者
-
藤尾 芳久
小高 パトリシア・リリアナ・ヒル
原 素之
秋山 和夫
- 出版者
- 日本水産學會
- 雑誌
- 日本水産学会誌 (ISSN:00215392)
- 巻号頁・発行日
- vol.54, no.6, pp.969-974, 1988
- 被引用文献数
-
3
5
Starch gel electrophoresis was carried out to survey the genetic variation in the haploid lavers of the <i>Porphyra</i> sp. claimed to be <i>Porphyra renera</i>. Eleven enzyme loci were resolved and scored. Eight of the eleven loci were monomorphic, while the three loci, catalase (CAT), glucosephosphate isomerase (GPI) and mannosephosphate isomerase (MPI) showed polymorphism. At the <i>Gpi</i> and <i>Mpi</i> loci, a number of lavers had electrophoretic phenotypes characteristic of heterozygotes.<br> In order to compare with <i>Porphyra yezoensis</i>, the allelic frequencies were calculated on the assumption that the heterozygous phenotypes possessed two alleles. The genetic distance between <i>Porphyra</i> sp. and <i>Porphyra yezoensis</i> was 0.1511, indicating the differentiation of the subspecies level.<br> Electrophoretic phenotypes characteristic of heterozygotes is unexpected, since <i>Porphyra</i> lavers are in a haploid phase. Our findings suggest that the plant is either in the diploid phase or that duplication occurs in one of the chromosome sets.