نتایج جستجو برای: rachis
تعداد نتایج: 478 فیلتر نتایج به سال:
introduction using agricultural-industrial waste is one way to overcome the shortage of animal feed. potato is one of the most important products in the world after rice, wheat and maize. potato pulp is a by-product which remains after extraction of starch, and can be used as animal feed. because of the high moisture content of the potato pulp, silage is the best way to maintain it. however, it...
Pan African Medical Journal. 2017;27:56. doi:10.11604/pamj.2017.27.56.11935 This article is available online at: http://www.panafrican-med-journal.com/content/article/27/56/full/ © Zeineb Alaya et al. The Pan African Medical Journal ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0),...
Bread wheat (Triticum aestivum) inflorescences, or spikes, are characteristically unbranched and normally bear one spikelet per rachis node. Wheat mutants on which supernumerary spikelets (SSs) develop are particularly useful resources for work towards understanding the genetic mechanisms underlying wheat inflorescence architecture and, ultimately, yield components. Here, we report the characte...
Because synonymy treatment traditionally relies on morphological judgments, it usually causes many problems in species delimitation and in the biodiversity catalogue. For example, Diplopterygium simulans, which belongs to the Gleicheniaceae family, has been considered to be synonymous with D. glaucum or D. giganteum based mainly on the morphology of its pinna rachis and blade. In the absence of...
Small RNAs (sRNA) of 15-30 nucleotides regulate various processes in eukaryotes. Regulatory sRNAs are produced through the RNA interference (RNAi) pathway from double stranded RNA (dsRNA). Dicer or dicer-like enzyme processes the dsRNAs into 15-30 bp dsRNAs, which in turn bind to the RNA-induced silencing complex (RISC) to regulate gene expression. We previously cloned sRNAs from barley. In thi...
Wild emmer wheat, Triticum dicoccoides, is the progenitor of modern tetraploid and hexaploid cultivated wheats. Our objective was to map domestication-related quantitative trait loci (QTL) in T. dicoccoides. The studied traits include brittle rachis, heading date, plant height, grain size, yield, and yield components. Our mapping population was derived from a cross between T. dicoccoides and Tr...
Only seldom are square/rectangular shapes found in nature. One notable exception is the bird feather rachis, which raises the question: why is the proximal base round but the distal end square? Herein, it is uncovered that, given the same area, square cross sections show higher bending rigidity and are superior in maintaining the original shape, whereas circular sections ovalize upon flexing. T...
Résumé Les métastases osseuses sont généralement d'origine pulmonaire, prostatique, rénale, vésicale ou thyroïdienne chez les hommes. Une origine colorectale est rare. Peu de publications ont décrit ce type de métastases, la localisation la plus fréquente est le rachis axial ou le bassin. La localisation crânio-faciale est exceptionnelle. Nous relatons ainsi le cas d'une observation d'un homme ...
Wheat (Triticum spp.) is one of the founder crops that likely drove the Neolithic transition to sedentary agrarian societies in the Fertile Crescent more than 10,000 years ago. Identifying genetic modifications underlying wheat's domestication requires knowledge about the genome of its allo-tetraploid progenitor, wild emmer (T. turgidum ssp. dicoccoides). We report a 10.1-gigabase assembly of t...
We describe an exquisitely preserved new avian fossil (BMNHC-PH-919) from the Lower Cretaceous Yixian Formation of eastern Inner Mongolia, China. Although morphologically similar to Cathayornithidae and other small-sized enantiornithines from China's Jehol Biota, many morphological features indicate that it represents a new species, here named Junornis houi. The new fossil displays most of its ...
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