In the years 2005-2009 six Bulgarian sorts of lavender were tested for fresh blossom yield and essential oil yield, as well as one seed population, formed by the seed offspring of these sorts. With all studied sorts and seed population, the fresh raceme yield and the essential oil yield are mostly affected by the specific interaction between the genotype and the current year conditions of cultivation – 69% and 80.4%. The “Druzhba”, “Sevtopolis”, “Yubileina” and “Hebar” sorts are characterised with a high adaptability, but they retain their yield stability only when the soil and climate conditions of cultivation are good. The “Hemus”, and “Raya” sorts and their seed population give highly stable yields even in less favourable conditions of cultivation.

Еvaluation of the stability and adaptability of the Bulgarian lavender sorts yield

S. Stanev