Phylogenetic relationships of the 'higher' hamamelids were estimated based on nucleotide sequences of the non-coding region of chloroplast trnL-F. Twenty-five species were sampled, representing 24 genera of al...Phylogenetic relationships of the 'higher' hamamelids were estimated based on nucleotide sequences of the non-coding region of chloroplast trnL-F. Twenty-five species were sampled, representing 24 genera of all eight families of the 'higher' hamamelids. A parsimony analysis of data set indicated that the 'higher' hamamelids formed a strongly supported clade with 100% bootstrap value in the strict consensus tree. Nothofagus was the basal lineage and the Fagaceae was sister to a well-supported core 'higher' hamamelids clade containing Myricaceae, Rhoipteleaceae, Juglandaceae, Casuarinaceae, Ticodendraceae and Betulaceae. Three clades were recognized in the core ' higher' hamamelids: (1) Casuatina ( Ticodendron, ( Betu-laceae)), (2) Juglandaceae-Rhoipteleaceae, and (3) Myricaceae. Compared with the previous studies, familial relationships of the 'higher' hamamelids were better resolved.展开更多
In south Meghalaya, farmers maintain a variety of economically important plant species in arecanut agroforestry systems. We investigated plant species composition of arecanut agroforests of south Meghalaya and encount...In south Meghalaya, farmers maintain a variety of economically important plant species in arecanut agroforestry systems. We investigated plant species composition of arecanut agroforests of south Meghalaya and encountered 160 plants, which included 83 tree species, 22 shrub species, 41 herb species and 14 climber species. The study reveals that arecanut agroforests provide cash income, medicine, timber, fuelwood and edibles for household consumption as well as for sale. We conclude that these agroforestry systems serve as home for many economically important plant species, harbour rich biodiversity and mimic the natural forests both in structural composition as well as ecological and economic functions.展开更多
文摘Phylogenetic relationships of the 'higher' hamamelids were estimated based on nucleotide sequences of the non-coding region of chloroplast trnL-F. Twenty-five species were sampled, representing 24 genera of all eight families of the 'higher' hamamelids. A parsimony analysis of data set indicated that the 'higher' hamamelids formed a strongly supported clade with 100% bootstrap value in the strict consensus tree. Nothofagus was the basal lineage and the Fagaceae was sister to a well-supported core 'higher' hamamelids clade containing Myricaceae, Rhoipteleaceae, Juglandaceae, Casuarinaceae, Ticodendraceae and Betulaceae. Three clades were recognized in the core ' higher' hamamelids: (1) Casuatina ( Ticodendron, ( Betu-laceae)), (2) Juglandaceae-Rhoipteleaceae, and (3) Myricaceae. Compared with the previous studies, familial relationships of the 'higher' hamamelids were better resolved.
文摘In south Meghalaya, farmers maintain a variety of economically important plant species in arecanut agroforestry systems. We investigated plant species composition of arecanut agroforests of south Meghalaya and encountered 160 plants, which included 83 tree species, 22 shrub species, 41 herb species and 14 climber species. The study reveals that arecanut agroforests provide cash income, medicine, timber, fuelwood and edibles for household consumption as well as for sale. We conclude that these agroforestry systems serve as home for many economically important plant species, harbour rich biodiversity and mimic the natural forests both in structural composition as well as ecological and economic functions.
