|
|
| 11. |
Interactions of Cd with Zn, Cu, Mn and Fe for lettuce (Lactuca sativaL.) in hydroponic culture |
| |
Plant, Cell&Environment,
Volume 14,
Issue 7,
1991,
Page 713-717
C. TH YS,
P. VANTHOMME,
E. SCHREVENS,
M. PROFT,
Preview
|
PDF (3502KB)
|
|
摘要:
Abstract.The effect and accumulation of cadmium (Cd) in lettuce grown by means of the hydroponic technique was investigated by multivariate analysis, and was found to be affected by the concentration of other trace elements. Particularly iron acted in a strongly antagonistic way against Cd. Consequently, no absolute toxicity limits for Cd can be drawn without considering other trace elements.
ISSN:0140-7791
DOI:10.1111/j.1365-3040.1991.tb01545.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
|
| 12. |
Measurement of chlorophyll fluorescence within leaves using a fibreoptic microprobe |
| |
Plant, Cell&Environment,
Volume 14,
Issue 7,
1991,
Page 719-725
J. F. BORNMAN,
T. C. VOGELMANN,
G. MARTIN,
Preview
|
PDF (5705KB)
|
|
摘要:
Abstract.The distribution of chlorophyll fluorescence was measured within leaves ofMedicago salivawith a fibre optic microprobe. Leaves were irradiated with broad band blue light (1000 μmol m−2s−1) and chlorophyll fluorescence was measured at 688 nm. The amount of fluorescence measured within the leaf depended upon the direction in which the probe was inserted. When the probe was advanced directly through the leaf from the shaded towards the irradiated surface, the maximum amount of detected fluorescence occurred near the boundary between the palisade and spongy mesophyll. When the probe was advanced through the leaf from the opposite direction maximum detected fluorescence was at the boundary between the epidermis and palisade. These results appear to be a consequence of the blue light gradient, which declined exponentially within the palisade but was counterbalanced by increasing chlorophyll content within the leaf. Modelling indicates that the measured distribution of chlorophyll fluorescence can be explained by relatively uniform emission of fluorescence throughout the palisade layer, indicating that the chloroplasts may be photosynthetically specialized to their light environment within the
ISSN:0140-7791
DOI:10.1111/j.1365-3040.1991.tb01546.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
|
| 13. |
Book Reviews |
| |
Plant, Cell&Environment,
Volume 14,
Issue 7,
1991,
Page 727-728
Preview
|
PDF (621KB)
|
|
摘要:
Books reviewed in this article:METHODS IN STOMATAL RESEARCH.By JonathanWeyers&HansMeidnerIN VITROMETHODS FOR THE CONSERVATION OF PLANT GENETIC RESOURCES.Edited by JohnH. Doods
ISSN:0140-7791
DOI:10.1111/j.1365-3040.1991.tb01547.x
出版商:Blackwell Publishing Ltd
年代:1991
数据来源: WILEY
|
|
首页
