The productivity of early type red clover (Trifolium pratense) varieties and breeding lines

摘要

Red clover varieties and breeding lines were tested at the Lithuanian Institute of Agriculture in Dotnuva in 2005 and 2006. The Lithuanian varieties 'Liepsna', 'Vyciai', 'Vyliai', and newly developed breeding lines and varieties received from foreignscientific institutions (8 varieties and 10 breeding lines altogether) were investigated. Plant height, dry matter yield, and seed production were recorded. The diploid variety 'Vyciai1 was chosen as a standard. All varieties and breeding lines were early maturing. The tetraploid variety 'Sadunai' was noted for its plant height (61.6 cm), but its seed production was lower (6.7 kg ha~(-1)) than that of the standard diploid variety. The variety 'Astra' performed worst of all the varieties tested, its height was 51.2 cm and dry matter yield was 7.38 Mg ha~(-1). The highest yielding variety was 'Radviliai' and its dry matter yield was 1.68 Mg ha~(-1) more than that of the standard variety. The diploid breeding line No 33 exhibited the highest seed production, while the variety 'Vyliai' had the lowest seed production (260 kg ha~(-1) and 106.7 kg ha~(-1), respectively).