منابع مشابه
Effects of photooxidation on membrane integrity in Salix nigra seeds.
BACKGROUND AND AIMS Salix nigra seeds are desiccation-tolerant, as are orthodox seeds, although in contrast to other orthodox seeds they lose viability in a few weeks at room temperature. They also differ in that the chloroplasts of the embryo tissues conserve their chlorophyll and endomembranes. The aim of this paper was to investigate the role of chlorophyll in seed deterioration. METHODS S...
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There are advantages to be gained from using an oral barbiturate as a pre-operative sedative. Heptabarbitone (Medomin) has been given in a dose of 400 mg to fifty healthy patients undergoing minor gynaecological operations. Using a scoring system, the sedative effects of diis drug have been measured and found to be comparable with the sedation produced by papaveretum 20 mg and hyoscine 0.4 mg a...
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Dexmedetomidine undoubtedly is a useful sedative in the intensive care setting because it has a minimal effect on the respiratory system. Dexmedetomidine infusions lasting more than 24 hours have not been approved since the first approval was acquired in the US in 1999. However, in 2008, dexmedetomidine infusions for prolonged use were approved in Colombia and in the Dominican Republic, and the...
متن کاملEcological correlates of secondary sexual dimorphism in Salix glauca (Salicaceae).
The ecological causation hypothesis for secondary sexual dimorphism was tested in Salix glauca, a dioecious willow shrub. Plants growing in a Colorado Rocky Mountain (USA) krummholz mosaic of mesic and xeric patches were monitored for four consecutive years. Ecological causation is predicated on unique resource demands associated with sexual function. In S. glauca, seeds have twofold higher N a...
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The heritability of gene expression is critical in understanding heterosis and is dependent on allele-specific regulation by local and remote factors in the genome. We used RNA-Seq to test whether variation in gene expression among F1 and F2 intraspecific Salix purpurea progeny is attributable to cis- and trans-regulatory divergence. We assessed the mode of inheritance based on gene expression ...
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ژورنال
عنوان ژورنال: BMJ
سال: 1887
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.2.1387.237-a