ISSN:
1573-5109
Keywords:
Bulgaria
;
clovers
;
collecting expedition
;
forage legumes
;
Trifolium sp.
;
Trifolium vesiculosum Savi
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Joint collecting expeditions to improve the genetic diversity of Trifolium species in the U.S. National Plant Germplasm System (NPGS) were carried out in Bulgaria by scientists of the USDA-ARS, University of Florida, Texas A&M University, and Institute of Introduction and Plant Genetic Resources (IIPGR), Bulgaria, on 14–27 July 1990 and 30 July – 13 August 1993. The objectives were to collect seed of T. vesiculosum Savi and other annual clovers in southeastern Bulgaria in 1990 and seed of perennial Trifolium species in southwestern Bulgaria in 1993. A total of 246 collections were made of 50 Trifolium species (38 annual and 12 perennial) and 25 collections of 17 other forage legumes. Collections were made at 90 sites in 13 of the 20 floristic regions in Bulgaria. The genetic diversity of T. vesiculosum in the NPGS was increased by the addition of 16 accessions. Four Trifolium sp. were added to the NPGS. Land utilization for intensive grazing near villages and small plot farming in river valleys greatly increased between 1990 and 1993. Genetic erosion of the extensive Trifolium resources within Bulgaria may occur as these practices increase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008796325591
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