Identifying, discriminating and isolating cultivars of ‘Marguerites’ originated from Argyranthemum frutescens parentages and their intergeneric and interspecific hybridities by DNA markers amplified by RAPD (Random Amplified Polymorphic DNA) and ISSR (Inter-Simple Sequence Repeat)∗

Abstract

Abilities of the polymorphic DNA markers amplified by RAPD (Randomly Amplified Polymorphic DNA) and ISSR (Inter Simple Sequence Repeat) were studied, detected and systematized breeding lines and expanding molecular variabilities and molecular phylogenetic lines of the cultivarietal ‘Marguerites’ of the Argyranthemum lineage and especially the intergeneric hybrids of ‘Marguerite’ X Glebionis carinata Tzvelev or G. coronaria (L.) Spach. The reproducible polymorphic bands were generated by RAPD-PCR using RAPD primer OPC-04, in respective species of Glebionis and the intergeneric hybrids of the ‘Marguerites.’ The primer OPC-04 made it possible to identify either two intergeneric hybrids of ‘Marguerite’ X G. carinata or ‘Marguerite’ X G. coronaria. The polymorphic bands were amplified by ISSR-PCR in the breeding lines and the cultivars of the ‘Marguerite,’ while they were not amplified by RAPD. A specific band was confirmed by ISSR-5 primer in the ‘Marguerite’ cultivar strain of ‘Zairai Shiro.’ This primer ISSR-5 detected and identified certain specific band among the band pattern of ‘Southern Elegance White,’ this cultivar has cv. ‘Early White’ as the paternal parent. Similar polymorphic band pattern was confirmed by ISSR-PCR, in the breeding lines and the cultivars of the ‘Marguerite’ which have similarity in flower color, flowering type and share the hybrid parents.