Karyotype analysis in Plantago II

概要

論文の詳細を見る
1) The karyotypes of six species were studied and the results are formulated as follows;Plantago camtschatica ChamissoK(2n)=12=2csA1m+2A2sm+2csBm+2C1sm+2C2sm+2tDtP. coronopus L.K(2n)=10=2tcscsAsm+2Bsm+2CtCst+2Dsm+2EmP. lanceolata L.K(2n)=12=2csAsm+2Bsm+2Csm+2Dm+2Est+2FstP. virginica L.K(2n)=24=2A1sm+2A2m+2Bsm+4Csm+2Dsm+4Em+4Fm+4GsmP. psyllium L.K(2n)=12=2csA1m+2csA2sm+2Bsm+2tC1sm+2tC2sm+2tDmP. indica L.K(2n)=12=2csA1m+2csA2sm+2B1sm+2(cs)B2st+2Cst+2(cs)Dst2) The karyotypes of subgenus psyllium are essentially similar to those of subgenus Euplantago.3) In Plantago, many species are found to have the basic number x=6 and only a few with x=5 or x=4. Having a pair of conspicuously large, metacentric (White 1945) chromosomes, the karyotype of P. coronopus, x=5., is characteristic and clearly distinguished from those of the species with x=6.4) P. indica is partially related to P. psyllium, karyotypically. P. psyllium has a symmetrical karyotype and is regarded as a primitive species. P. indica, having an asymmetrical karyotype, is a differenciated species.5) Karyotypically, P. virginica is an allotetraploid.
日本遺伝学会の論文