Research on low-alkaloid concentration in varieties of lupin (Lupinus sp.) in Lithuania.

摘要

Testing for alkaloids in lupine varieties was conducted at the Voke Branch of the Lithuanian Institute of Agriculture during a competitive trial of feeding lupine (Lupinus sp.) in 2006-2008. The samples were taken from feeding yellow lupine (Lupinus luteus L), 'Trakiai' and 'Vilciai' varieties, as well as narrow-leaved lupine (Lupinus angustifolius L.), 'Vilniai' variety, and selection line N1702. Alkaloid concentration was estimated in the periods of inflorescence emergence (BBCH 51-55), flowering (BBCH 64-67), development of fruits (BBCH 71-75) and seed ripening (BBCH 85-88). The test material included exsiccates of leaves, stems, flowers, pods and seeds. According to the results, the average alkaloid levels were similar in yellow forage lupine (Lupinus luteus L.) varieties 'Trakiai' and 'Vilciai'. The 'Vilniai' variety on average contained more alkaloids than the narrow-leaved selection line N1702. Analysis of the average alkaloid levels revealed that in the yellow lupine (Lupinus luteus L.) varieties 'Trakiai' and 'Vilciai' alkaloid levels in the stems were lower than in the narrow-leaved (Lupinus angustifolius L.) variety 'Vilniai' and N1702 in all phenological stages. The average alkaloid level in leaves was lower than in stems at the stage of flowering (BBCH 64-67). In our study, the highest average alkaloid levels were found in pods (0.114+or-0.007) and flowers (0.114+or-0.006) in narrow-leaved lupines, while the lowest level was found in seeds (0.022+or-0.003) of yellow lupines.