this study was conducted to investigate the effects of garlic powder (gp) black seed (bs) and plant premix (gp and bs) in the diet on broiler growth performance and intestinal morphology. included 480 hubbard broiler chicks(day-old). there were 4 treatment groups each consisting of 3 replicates. the four dietary treatments consisted of a control (basal diet), basal diet +0.5% gp, basal diet +0....

BACKGROUND Large-scale plant diversity inventories are critical to develop informed conservation strategies. However, the workload required for classic taxonomic surveys remains high and is particularly problematic for megadiverse tropical forests. METHODOLOGY/PRINCIPAL FINDINGS Based on a comprehensive census of all trees in two hectares of a tropical forest in French Guiana, we examined whe...

An enormous amount of naturally occurring genetic variation affecting development is found within wild and domesticated plant species. This diversity is presumably involved in plant adaptation to different natural environments or in human preferences. In addition, such intraspecific variation provides the basis for the evolution of plant development at larger evolutionary scales. Natural phenot...

A M. truncatula plant is made up of (1) a main axis that can organize either in a rosette (i.e. the leaves are at the level of the neck with very short internodes) or as an elongated axis; and (2) branches of different orders (e.g. primary, secondary, tertiary, branches). Plant morphology and architecture strongly vary between genotypes and are very dependent upon environmental and cultural con...

The structural organization of transcriptionally active DNA that contains cistrons for precursor molecules of ribosomal RNA is described in positively stained spread preparations from nuclei and nucleoli isolated from the green alga, Acetabularia mediterranea Lmx. These nuclei contain large aggregates of nucleolar subunits in which fibril-covered regions, the putative active cistrons for precur...

Cactophilic Drosophila flies are excellent models to study adaptation to a relatively narrow spectrum of potential host plants and host-driven evolutionary diversification. Previous studies suggested a complex genetic architecture of wing and male genital morphology in phylogenetically basal species of the D. buzzatii cluster. In this work, we investigate the effect of experimental hybridizatio...