A morphometric analysis of Prunus spinosa, P. domestica ssp. insititia, and their putative hybrids in Denmark

Abstract

2001. A morphometric analysis of Prunus spinosa, R domestica ssp. insititia, and their putative hybrids in Denmark. -Nord. J. Bot. 21: 349-363. Copenhagen. ISSN 0107-055X.The taxonomy of Prunus subgenus Prunus is notoriously problematic and reliable discriminating characters for species and subspecies identification are missing. Principal Component Analysis (PCA) was performed on different morphological data sets and useful diagnostic characters for Prunus spinosa and I! domestica ssp. insititia were found. Many traditionally used morphological characters were found unreliable. The hypothesis of widespread hybridization between Prunus spinosa and R domestica ssp. insititia in Denmark were examined using PCA and HYWIN. It was found that hybrids between the two taxa are rare in Denmark.

Genetic Relatedness among Cultivars of the Greek Plum Germplasm

“…The latter species had a higher affinity to P. domestica rather than to P. salicina. The close relationship between P. cerasifera, P. domestica and P. insititia has been demonstrated based on morphological studies (Woldring, 2000;Nielsen and Olrik, 2001) and confirmed in several genetic analyses (Aradhya et al, 2004;Shaw and Small, 2004;Katayama and Uematsu, 2005). Furthermore, according to Woldring (2000), both the oldest cultivars introduced from Japan, more than 100 years ago, while 'Black Gold' was bred and patented in 1980 by Superior Farms (Okie and Ramming, 1999).…”

“…Still, delineation of the diverse taxa involved and information on their morphological and genetic diversity is an indispensable and crucial tool for their proper utilization. Extensive polyploidisation (Zohary, 1992;Woldring, 2000), hybridization, introgression (Stace, 1975;Woldring, 2000) and a long cultivation history (Zohary and Hopf, 1994;Woldring, 2000;Nielsen and Olrik, 2001) led the European Prunus taxa into a complex biological species concept with overlapping species relationships (Depypere et al, 2009). Furthermore, it resulted in a broad genetic variation and transitional states between and within the different taxa.…”

Crops, weeds and gathered plants in the vicinity of the mediaeval Castle Kolno, near Brzeg, S-W Poland, and a morphometric approach for some taxa

“…They measured three basic characters of a stone: length-Länge (L), width -Breite (W or B) and thickness -Dicke (T or D) (Behre 1978). Another designation of stone characters is presented by Horvath et al (2011) and Nielsen and Olrik (2001) where width (W) equals Dicke (D) and thickness (T) equals Breite (B). The data of Horvath et al (2011) show the lack of variation of the stone thickness within the group of 80 varieties of.…”

Hybridization and genetic variation in Danish populations of European crab apple (Malus sylvestris)

“…The case of M. sylvestris and M. ×domestica is one of the numerous examples of hybridization between pairs of closely related tree species in Europe, the study of which, is potentially very challenging due to a low number, and often great overlap of diagnostic morphological characters (Winfield et al, 1998;Triest et al, 1999;Nielsen and Olrik, 2001;Jensen et al, 2003). Another challenge in these kinds of studies is the frequent lack of information about timescale of hybridization and extent of historical introgression between the species studied.…”