Clonal integration enhances survival and performance of Potentilla anserina, suffering from partial sand burial on Ordos plateau, China

2002 ◽  
pp. 81-96 ◽  
Author(s):  
Feihai Yu ◽  
Yufu Chen ◽  
Ming Dong
Keyword(s):  
Clonal Integration ◽  
Sand Burial ◽  
Ordos Plateau ◽  
Potentilla Anserina ◽  
And Performance

scholarly journals CLONAL INTEGRATION MODIFIES RESPONSES OF HEDYSARUM LAEVE TO LOCAL SAND BURIAL IN MU US SANDLAND

2006 ◽  
Vol 30 (2) ◽  
pp. 278-285 ◽  
Author(s):  
LIU Feng-Hong ◽  
◽  
YE Xue-Hua ◽  
YU Fei-Hai ◽  
DONG Ming
Keyword(s):  
Clonal Integration ◽  
Sand Burial ◽  
Hedysarum Laeve

Variations in Growth, Clonal and Sexual Reproduction ofSpartina alternifloraResponding to Changes in Clonal Integration and Sand Burial

2015 ◽  
Vol 43 (7) ◽  
pp. 1100-1106 ◽  
Author(s):  
Yan Xiao ◽  
Hui Zhao ◽  
Wen Yang ◽  
Hua Qing ◽  
Changfang Zhou ◽  
...  
Keyword(s):  
Sexual Reproduction ◽  
Clonal Integration ◽  
Sand Burial

Clonal integration improves the tolerance of Carex praeclara to sand burial by compensatory response

2010 ◽  
Vol 36 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Jin-Song Chen ◽  
Ning-Fei Lei ◽  
Ming Dong
Keyword(s):  
Clonal Integration ◽  
Compensatory Response ◽  
Sand Burial

Effects of clonal integration on response to sand burial and defoliation by the dune plant Ipomoea pes-caprae (Convolvulaceae)

2000 ◽  
Vol 48 (2) ◽  
pp. 159 ◽  
Author(s):  
Catherine E. Bach
Keyword(s):  
Stem Growth ◽  
Physiological Integration ◽  
Clonal Integration ◽  
Leaf Production ◽  
Sand Burial ◽  
Negative Effect ◽  
Dune Plant ◽  
Effect On Growth

This study examined the importance of clonal integration on the growth and mortality of a tropical dune plant, Ipomoea pes-caprae L. (Roth), in response to two stresses: sand burial and defoliation. Sand burial and artificial defoliation treatments were applied to one shoot on daughter ramets, some of which were connected to other ramets and some of which were not connected to other ramets. Sand burial significantly enhanced both stem growth and leaf production of the buried shoots, both for connected and unconnected ramets. Defoliation decreased stem growth of shoots other than the defoliated shoot, but only for unburied ramets. Defoliation also had a greater negative effect on growth of other shoots on connected ramets than on unconnected ramets. At the level of the entire ramet, burial stimulated both stem growth and leaf production for connected ramets, but not for unconnected ramets. These results support the hypothesis that physiological integration between ramets mediates the response to both sand burial and defoliation in Ipomoea pes-caprae.

scholarly journals Clonal integration helps Psammochloa villosa survive sand burial in an inland dune

2004 ◽  
Vol 162 (3) ◽  
pp. 697-704 ◽  
Author(s):  
Feihai Yu ◽  
Ming Dong ◽  
Bertil Krüsi
Keyword(s):  
Clonal Integration ◽  
Sand Burial

Transmission Scanning Electron Microscopy and Energy Analysis with the Siemens ELMISKOP 101

1972 ◽  
Vol 30 ◽  
pp. 450-451
Author(s):  
H. M. Thieringer
Keyword(s):  
Objective Lens ◽  
Transmission Microscopy ◽  
Image Recording ◽  
Mode Of Operation ◽  
Scanning Transmission ◽  
Electron Microscopes ◽  
And Performance ◽  
Convergent Beam ◽  
Ray Path ◽  
Beam Diffraction

It has repeatedly been show that with conventional electron microscopes very fine electron probes can be produced, therefore allowing various micro-techniques such as micro recording, X-ray microanalysis and convergent beam diffraction. In this paper the function and performance of an SIEMENS ELMISKOP 101 used as a scanning transmission microscope (STEM) is described. This mode of operation has some advantages over the conventional transmission microscopy (CTEM) especially for the observation of thick specimen, in spite of somewhat longer image recording times.Fig.1 shows schematically the ray path and the additional electronics of an ELMISKOP 101 working as a STEM. With a point-cathode, and using condensor I and the objective lens as a demagnifying system, an electron probe with a half-width ob about 25 Å and a typical current of 5.10-11 amp at 100 kV can be obtained in the back focal plane of the objective lens.

Angular Resolved Electron Spectroscopy with Parallel Recording

1990 ◽  
Vol 48 (2) ◽  
pp. 370-371
Author(s):  
Huang Min ◽  
P.S. Flora ◽  
C.J. Harland ◽  
J.A. Venables
Keyword(s):  
Electron Spectroscopy ◽  
Low Voltage ◽  
Solid Angle ◽  
Detection System ◽  
Voltage Electron ◽  
Cylindrical Mirror ◽  
Inner Radius ◽  
Channel Plate ◽  
And Performance ◽  
Type Detector

A cylindrical mirror analyser (CMA) has been built with a parallel recording detection system. It is being used for angular resolved electron spectroscopy (ARES) within a SEM. The CMA has been optimised for imaging applications; the inner cylinder contains a magnetically focused and scanned, 30kV, SEM electron-optical column. The CMA has a large inner radius (50.8mm) and a large collection solid angle (Ω > 1sterad). An energy resolution (ΔE/E) of 1-2% has been achieved. The design and performance of the combination SEM/CMA instrument has been described previously and the CMA and detector system has been used for low voltage electron spectroscopy. Here we discuss the use of the CMA for ARES and present some preliminary results.The CMA has been designed for an axis-to-ring focus and uses an annular type detector. This detector consists of a channel-plate/YAG/mirror assembly which is optically coupled to either a photomultiplier for spectroscopy or a TV camera for parallel detection.

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