Journal article

Publication year: 1997

Pages: 251-256

Journal: Plant Biology

Volume number: 110

Issue number: 3

ISSN: 0932-8629

DOI Link: https://doi.org/10.1111/j.1438-8677.1997.tb00637.x

Publisher: Wiley

Abstract: 
Crossing experiments were carried out in order to investigate the importance of apogamy in relation to autogamy, geitonogamy and xenogamy in the reproductive biology of pentaploid members of the genus Rose, section Caninae (Ser.) Rehd. About 10,000 seeds from 900 crossing experiments were examined, 4500 of them for both filling of the grain and viability of the embryo. The results were compared with experimental reports and literature dating from 1753 to 1995. Apomictic reproduction was shown to be possible in all species of the section tested, but viable seed yields were only about 5% of those produced by xenogamy. This contradicts the hypothesis of Fagerlind (1940, 1944, 1945, 1950) and Gustafsson and Hakansson (1942), but supports the results of Matsson (1912) and Schwertschlager (1915). The number of viable seeds increased in the order apogamy, autogamy, geitonogamy to xenogamy. Reciprocal crossings showed significant differences in the number of seeds produced in the hip. This contradicts the hypothesis on the genomic constitution of the pentaploid Caninae with unbalanced heterogamy, as advocated by Hurst (1927) and Gustafsson and Hakansson (1942).

Harvard Citation style: Wissemann, V. and Hellwig, F. (1997) Reproduction and hybridisation in the genus Rosa, section Caninae (Ser) Rehd, Plant Biology, 110(3), pp. 251-256. https://doi.org/10.1111/j.1438-8677.1997.tb00637.x

APA Citation style: Wissemann, V., & Hellwig, F. (1997). Reproduction and hybridisation in the genus Rosa, section Caninae (Ser) Rehd. Plant Biology. 110(3), 251-256. https://doi.org/10.1111/j.1438-8677.1997.tb00637.x