نتایج جستجو برای: maidenhair fern

تعداد نتایج: 2574  

2009
Kyung-Hwan Park Jin-Pok Kim

Key Wo r d s : Cl~emicul carcitzogetzesis, MNNG, Red pepper, Bracken fern

Journal: :Chemical & pharmaceutical bulletin 2001
Y Asakawa M Toyota Y Oiso J E Braggins

The New Zealand fern Blechnum fluviatile and liverwort, Hymenophyton flabellatum produce the characteristic pungent compounds, (-)-polygodial, a sesquiterpene dialdehyde, and 1-(2,4,6-trimethoxyphenyl)-but-2-en-1-one, respectively. The former compound has been isolated from the Japanese liverwort, Porella vernicosa complex and the latter one from the Japanese fern, Arachinoides standishii. The ...

Journal: :Water research 2003
Yuh-Shan Ho

Tree fern, an agricultural by-product, was used for the sorptive removal of copper ions from aqueous solution. The experimental data was analysed by Langmuir, Freundlich and Redlich-Peterson isotherms. The equilibrium sorption capacity of copper ions was determined from the Langmuir equation and found to be 11.7 mg/g. A batch sorption model, based on the assumption of the pseudo-second-order me...

2014
Bojian Zhong Richard Fong Lesley J. Collins Patricia A. McLenachan David Penny

We report the chloroplast genomes of a tree fern (Dicksonia squarrosa) and a "fern ally" (Tmesipteris elongata), and show that the phylogeny of early land plants is basically as expected, and the estimates of divergence time are largely unaffected after removing the fastest evolving sites. The tree fern shows the major reduction in the rate of evolution, and there has been a major slowdown in t...

2004
Ruixue Chen Benjamin W. Smith James D. Winefordner Mike S. Tu Gina Kertulis Lena Q. Ma

Ion-pair reverse-phase HPLC–inductively coupled plasma (ICP) MS was employed to determine arsenite [As(III)], dimethyl arsenic acid (DMA), monomethyl arsenic (MMA) and arsenate [As(V)] in Chinese brake fern (Pteris vittata L.). The separation was performed on a reverse-phase C18 column (Haisil 100) by using a mobile phase containing 10 mM hexadecyltrimethyl ammonium bromide (CTAB) as ion-pairin...

Journal: :Journal of integrative plant biology 2008
Biplab Patra Subir Bera R James Hickey

Herbivory with crypsis is not well documented in ferns. The present record of cryptic coloration of coccid Saissetia filicum Boisduval (Homoptera: Coccidae) to the sori of a fern species Asplenium nidus L. (Aspleniaceae) is unique. Predatory beetles (Jauravia sp., Coleoptera: Coccinellidae) that feed on the coccids, are suggested to be selective pressure for the development of the present homop...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1990
E Pichersky D Soltis P Soltis

The majority of homosporous ferns have a chromosome number that is severalfold greater than that of diploid seed plants. These fern species have therefore been generally considered to be of polyploid origin. Enzyme electrophoretic investigations have demonstrated, however, that within fern genera, species having the lowest chromosome numbers (n = 27-52) have the number of isozymes typical of di...

Journal: :Plant physiology 2017
Hanna Hõrak Hannes Kollist Ebe Merilo

Changing atmospheric CO2 levels, climate, and air humidity affect plant gas exchange that is controlled by stomata, small pores on plant leaves and stems formed by guard cells. Evolution has shaped the morphology and regulatory mechanisms governing stomatal movements to correspond to the needs of various land plant groups over the past 400 million years. Stomata close in response to the plant h...

Journal: :The New phytologist 2011
Jarmila Pittermann Emily Limm Christopher Rico Mairgareth A Christman

The ferns comprise one of the most ancient tracheophytic plant lineages, and occupy habitats ranging from tundra to deserts and the equatorial tropics. Like their nearest relatives the conifers, modern ferns possess tracheid-based xylem but the structure-function relationships of fern xylem are poorly understood. Here, we sampled the fronds (megaphylls) of 16 species across the fern phylogeny, ...

Journal: :Jurnal Perspektif Pendidikan 2023

This study aims to find out the types of fern growth in Batu Caves area and develop a qr code based flipbook. Based on results research data analysis, it was found that developed QR Code-based Flipbook suitable for use by people area. In addition, concluded exploration ferns (Pteridophyta) Taba Jemekeh Village 22 species consisting 12 families 13 genera ferns. Fern plants which are commonly Dry...

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