Biological Effects of Radiation: Mechanism and Measurement of Radiation, Applications in Biology, Photochemical Reactions, Effects of Radiant Energy on Organisms and Organic Products - Vol. 2

By Benjamin M. Duggar | Go to book overview

possible that an equal amount of energy in the visible region would have produced a similar injury. More work needs to be done before it can be definitely established that the infra-red is more injurious to plant tissue than the visible region when compared on an equal energy basis.

The fact remains that such fruits and other similarly constructed plant organs absorb energy in both the visible and infra-red and are not designed to eliminate this energy rapidly by the evaporation of water from their surface. Such types of "sun scald" have been observed by Ramsey (18) on onions harvested and exposed to sunlight in crates and by Le Clerg (16) on honeydew melons exposed to sunlight when the leaves were killed by fungi. Cases have also been reported of sun scald on the trunks of young apple trees. There is the possibility that all such types of sun-scald injury may be produced by high radiation values in both the infra-red and visible regions.


REFERENCES

1. ARTHUR JOHN M. "Red pigment production in apples by means of artificial light sources". Contrib. Boyce Thompson Inst. 4: 1-18. 1932.

2. ARTHUR JOHN M. "Artificial light and plant growth". Agric. Eng. 13: 228-291. 1932. [Also in Boyce Thompson Inst. Prof. Pap. 1( 22): 212-221. 1932.]

3. ARTHUR JOHN M., and W. D. STEWART. "Transpiration of tobacco plants in relation to radiant energy in the visible and infra-red". Contrib. Boyce Thompson Inst. 5: 483-501. 1933.

4. BROWN H. T., and F. ESCOMBE. "Researches on some of the physiological processes of green leaves with special reference to the interchange of energy between the leaf and its surroundings". Proc. Roy. Soc. [London] B. 76: 29-111. 1905.

5. BURNS G. R. "Photosynthesis in various portions of the spectrum". Plant Physiol. 8: 247-262. 1933.

6. CLUM HAROLD H. "The effect of transpiration and environmental factors on leaf temperatures. 1. Transpiration". Amer. Jour. Bot. 13: 194-216. 1926.

7. CLUM HAROLD H. "The effect of transpiration and environmental factors on leaf temperatures. 2. Light intensity and the relation of transpiration to the thermal death point". Amer. Jour. Bot. 13: 217-230. 1926.

8. COBLENTZ W. W. "The diffuse reflecting power of various substances". U. S. Bur. Stand. Bull.196. 1913.

9. COBLENTZ W. W., M. J. DORCAS, and C. W. HUGHES. "Radiometric measurements on the carbon arc and other light sources used in phototherapy". U. S. Bur. Stand. Tech. Pap.539. 1926.

10. CURTIS O. F. "What is the significance of transpiration?" Science 63: 267-271. 1926.

11. FORSYTHE W. E., and E. M. WATSON. "The tungsten lamp". Jour. Franklin Inst. 213: 623-637. 1932.

12. GULIK D. VAN. "Über das Absorptionsspektrum des Chlorophylls". II. Annalen Physik. 4 Ser. 46: 147-156. 1915.

13. GUTHRIE JOHN D. "Effect of environmental conditions on the chloroplast pigments". Amer. Jour. Bot. 16: 716-746. 1929. (Also in Contrib. Boyce Thompson Inst. 2: 220-250. 1929.)

14. JOHNSTON EARL S. The functions of radiation in the physiology of plants. 2. Some effects of near infra-red radiation on plants. Smithsonian Misc. Coll. 87( 14): 1932.

-851-

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Biological Effects of Radiation: Mechanism and Measurement of Radiation, Applications in Biology, Photochemical Reactions, Effects of Radiant Energy on Organisms and Organic Products - Vol. 2
Table of contents

Table of contents

  • Title Page iii
  • Contents v
  • Xix Photoperiodism 677
  • Introduction 677
  • References 709
  • Xx Plant Growth in Continuous Illumination 715
  • References 725
  • Xxi the Effects of Light Intensity Upon Seed Plants 727
  • Introduction 727
  • References 757
  • Xxii Effects of Different Regions of the Visible Spectrum Upon Seed Plants 763
  • Introduction 763
  • Concluding Remarks 787
  • References 788
  • Xxiii Effect of the Visible Spectrum Upon the Germination of Seeds and Fruits 791
  • References 823
  • Xxiv the Effects of Visible and Ultra-Violet Radiation on the Histology of Plant Tissues 829
  • References 838
  • Xxv Some Infra-Red Effects on Green Plants 841
  • References 851
  • Xxvi the Effect of Ultra-Violet Radiation Upon Seed Plants 853
  • Introduction 853
  • Concluding Remarks 881
  • References 882
  • Xxvii the Effects of Radiation on Fungi 889
  • Introduction 889
  • References 910
  • Xxviii the Problem of Mitogenetic Rays 919
  • Introduction 919
  • Conclusions 944
  • References 946
  • Xxix Effects of X-Rays Upon Green Plants 961
  • Introduction 961
  • General Summary 980
  • References 983
  • Xxx the Effects of Radium Rays on Plants 987
  • References 1009
  • Xxxi the Light Factor in Photosynthesis 1015
  • References 1051
  • Xxxii the Influence of Radiation on Plant Respiration and Fermentation Charles J. Lyon 1059
  • Introduction 1059
  • Summary 1071
  • References 1072
  • Xxxiii Growth Movements in Relation to Radiation 1073
  • Xxxiv Chlorophyll and Chlorophyll Development in Relation to Radiation 1093
  • References 1104
  • Xxxv Radiation and Anthocyanin Pigments 1109
  • Introduction 1109
  • Conclusion 1116
  • References 1118
  • XXXVI - Effects of Radiation on Bacteria 1119
  • References 1141
  • Xxxvii the Effects of Radiation on Enzymes 1151
  • References 1160
  • Xxxviii Induced Chromosomal Aberrations in Animals 1167
  • Introduction 1167
  • References 1202
  • Xxxix Radiation and the Study of Mutation in Animals 1209
  • Introduction 1209
  • References 1252
  • Xl Induced Mutations in Plants 1263
  • Introduction 1263
  • References 1278
  • Xli Induced Chromosomal Alterations 1281
  • References 1293
  • Xlii Induced Chromosomal Alterations in Maize 1297
  • References 1308
  • Xliii Biological Aspects of the Quantum Theory of Radiation Absorptions in Tissues 1311
  • References 1326
  • Subject Index 1331
  • Alphabetical List of Contributors 1343
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