Wild Oil Species Suitable for in situ Conservation and Use in the Breeding Programmes*

R. KOEVA, J. ANGELOV and S. ANGELOVA
Institute for Plant Genetic Resources, BG-4122 Sadovo, Bulgaria

Abstract

KOEVA, R., J. ANGELOV and S. ANGELOVA, 2003. Wild oil species suitable for in situ conservation and use in the breeding programmes. Bulg. J. Agric. Sci., 9: 597–600

The study was made over the period 1990/1997. The plant specific diversity in 11 floristic regions of the country was investigated through research expeditions. Studies were made to a different extent on 84 wild oil species from 30 botanical families. In ex situ and in situ collections, a total of 46 samples from the widespread Genera Brassica, Raphanus, Crambe and Erysmum were assessed according to a complex of characters (agrobiological, biochemical, economic). Most of the samples were taken from the representatives of genus Brassica – 23 from ex situ and 9 from in situ collections.
Twenty one species were classified as having high seed oil content (20–30 %). Higher levels of seed oil content was established in some samples, such as: Celtis australis L. of fam. Ulmaceae (36.1 %), Laurocerasus officinalis M.S. of fam. Rosaceae (37 %) and Chelidonium majus L. of fam. Papaveraceae (38%).
In terms of fatty acid composition, 15 wild oil species were studied, of which 12 related to the linol-olein type and other 3 – to the erucic-linol and linolen-linolic type. The main species by regions marked for in situ conservation were determined, as well as their importance for dynamic management of genetic resources.

Key words: wild oil species, in situ, conservation, breeding

*The article has been reported at the International Symposium on Breeding of Protein and Oil Crops 1–4 April, 1998, Poutevedra, Spain, Section III: Plant Genetic Resources in Protein and Oil Crops and Their Utilization in Breeding