BACKGROUND Host association patterns in Ectoedemia (Lepidoptera: Nepticulidae) are also encountered in other insect groups with intimate plant relationships, including a high degree of monophagy, a preference for ecologically dominant plant families (e.g. Fagaceae, Rosaceae, Salicaceae, and Betulaceae) and a tendency for related insect species to feed on related host plant species. The evolutio...

The genus Alnus (Betulaceae) is comprised of more than 40 species. Many species of this genus have a long history of use in folk medicines. Phytochemical investigations have revealed the presence of diarylheptanoids, polyphenols, flavonoids, terpenoids, steroids and other compounds. Diarylheptanoids, natural products with a 1,7-diphenylheptane structural skeleton, are the dominant constituents ...

Carpinus L. (Gürgen) ve Ostrya Scop. (Kayacık) Betulaceae familyasına bağlı iki cinstir. Bu araştırmada, Türkiye’de doğal yayılış gösteren orientalis Mill. (Doğu gürgeni), betulus (Adi gürgeni) carpinifolia (Gürgen yapraklı kayacık) türlerinde sürgünlerin anatomik özellikleri (trahelerin radyal teğetsel çapları, 1 mm2’de trahe sayısı, mm’de özışını yüksekliği genişliği) karşılaştırmalı olarak i...

Abstract Certain species of acorn- and nut-feeding weevils, Curculio spp. (Coleoptera: Curculionidae), have become significant insect pests cultivated hazelnuts (Corylus spp.) (Fagales: Betulaceae) worldwide. The significance weevils that feed on injure is increasing as countries such the United States China continue to develop hybrids hazel plants increase their hazelnut production. This revie...