Electrophoretic evidence for homoeologous chromosome pairing in the apogamous fern species Dryopteris nipponensis (Dryopteridaceae).
Segregation of genotypes through homoeologous chromosome pairing in the apogamous species Dryopteris nipponensis was tested by electrophoretic analysis. Of 284 progeny examined (250 gametophytes and 34 sporophytes), from the parental sporophyte with the Pgi-2 genotype abc, five showed different genotypes from that of the parent (three aac, one bbc and one bcc). This is the first evidence for genetic segregation in the progeny of apogamous fern species.
Graduate School of Science and Technology, Chiba University, 1-33 Yayoi, Chiba 263-8522, Japan. ishikawa@lycoris.s.chiba-u.ac.jp
Hiroshi
H
Ishikawa
Motomi
M
Ito
Yasuyuki
Y
Watano
Siro
S
Kurita
D023902:Chromosome Pairing; D032461:Chromosomes, Plant; D032491:Dryopteridaceae / Q000235:genetics*; D012100:Reproduction, Asexual; D013045:Species Specificity; D013170:Spores / Q000502:physiology