CHROMOSOME NUMBERS AND PLOIDY OF SEVERAL PLANTS IN HIBISCUS L.
木槿属几种植物的染色体数目及其倍性的研究

Root-tipmetaphasechromosomenumbersof6taxaof Hibiscus wereinvestigatedby wall degradationhypotonicstainingmethod.ChromosomenumbersforH.schizopetalus(Masters)Hook.f.(2n=42),H.mutabilis L.(2n=92),H.rosa-sinensis L.(2n=84),H.rosa-sinensis cv.DoubleRainbow(2n=105),H.rosa-sinensis cv.Flavo-plenus(2n=138)andH.rosa-sinensis cv.Carminatus(2n=147)arereported.It isshownthattheploidyrelationshipexistsamongthemexceptcv.Flavo-plenus,thebasic chromosomenumberbeingx=21.Fromtheobservationon chromosomenumbersandmorphological characters,H.rosa-sinensis L.is thoughtto be a hybridwhicharosefrom cv. Carminatusand H.schizopetalus.