Effect of Different Resistant Sunflower Varieties Root Exudates on Germination of Orobanche cumana Seeds Effect of Orobanche cumana Parasitization on Growth and Antioxidant Enzymes Activity of Different Helianthus annuus Varieties in Seedling Stage[JZ)] Chemical constituents from Orobanche cernua Effect of Traditional Chinese Medicinal Herb Extracts on Orobanche minor Seed Germination Allelopathic effect of potato on Orabanche aegyptiaca Pers. seed germination Taxonomy of the Chinese Orobanche and Its Relationships with Related Genera Determination of phenylethanoid glycosides in Orobanche coerulescens A new phenethyl alcohol glycoside from Orobanche coerulescens Investigation of ethnic medicinal plants Orobanche, Cistanche and Boschniakia