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Volume 1, Issue 3
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Naoji Suematsu, Kikuji Kuwatsuka1920 Volume 1 Issue 3 Pages 1-12
Published: July 15, 1920
Released on J-STAGE: April 03, 2009
JOURNAL FREE ACCESS1. Important peach varieties are inoculated with the fungus Gloeosporium laeticolor Berk.
2. No variety proved immune, as far as the experiment is concerned.
3. Peach varieties showed various degrees of susceptibility.
4. Two varieties, Tachibanawase and Jitsugetsutô proved resistance and have good qualities and early ripening character.
5. Most species belonging to Chinese race are resistant, while those belonging to Persian race are generally susceptible.
6. There seems to be no biologic form among the strains of Gloeosporium laetecolor Berk.
7. Adaptations of fungi can not be accepted in this experiment.View full abstractDownload PDF (928K) -
TAKEWO HEMMI1920 Volume 1 Issue 3 Pages 13-21
Published: July 15, 1920
Released on J-STAGE: April 03, 2009
JOURNAL FREE ACCESS -
YOSHIHIKO TOCHINAI1920 Volume 1 Issue 3 Pages 22-33
Published: July 15, 1920
Released on J-STAGE: February 19, 2009
JOURNAL FREE ACCESS1. Inulin and glucose are the most suitable carbohydrates for the carbon souros for this fungus, and lactose is the worst of all.
2. Polysaccharides are generally favorable carbon source for this fungus.
3. Organic acids as carbon cources are unfavorable to this fungus, and it can develop only in low percentages as 0.1%.
4. Maleic acid and fumaric acid have in some respect an unequal nutritive value to this fungus notwithstanding they are different only in stereocheinical construction of molecule.
5. In the nutrient solution which contains racemic acid as the carbon source, this fungus seems to assimilates d-tartaric acid better than 1-tartaric acid.
6. Of these acids succinic acid is the most favorable carbon source.
7. Mannite is a suitable carbon source.
8. Phenol derivatives check the development of the fungus in many cases.
9. Organic nitrogen compounds are better than inorganic nitrogen salts as the nitrogen source for this fungus.
10. Ammonia nitrogen and nitrate nitrogen are equal in their nutritive value to this fungus, but nitrite is unsuitable.
11. Amides are generally good nitrogen source for this fungus, and asparagine is the best of all.View full abstractDownload PDF (441K) -
UMENOJO BOKURA1920 Volume 1 Issue 3 Pages 34-55
Published: July 15, 1920
Released on J-STAGE: April 03, 2009
JOURNAL FREE ACCESS1. The symptom of a new Bacterial disease, the Nankwabyo, of Gypsy-moth caterpillars (Lymanthria Dispar, L.) resembles very much to that of the Nankwabyo, a kind of flacherie, of silkworms. The disease generally appears at the time, when the worm has reached its fourth or fifth moulting skin.
2. The disease is very infectious and is widely spread in our couutry. As a natural enemy to the Gypsy-moth caterpillar, it is togather with a parasiteic Hemiptera plaing the most importsnt role in the checking of the spread of this injurious insert in Japan, where as a consequence it is seldom to see such a devastation from the ravages of the worm as in America.
3. The disease is caused by a new species of bacteria, -Bacillus Disparis Hori et Bokura. It is medium-sized, rod-shapid, 1-1.3 0.7-0.8 microns, with 6 to 8 peritri chiate flagella. Endspores not formed. By the Gram's method, not decolorized. Konjak-media not liquified. Fermentation is readily set up in dextrose, laevulese, saccharose, maltose and galactose. Optimum temperature is 30° to 32°C. When fed to Gypsy-moth caterpillars they die readily in one to eight days; but it is ineff ctive when fed to silk-worms as well as to Anomala rufocuprea Motsch., Pieris rapae L, Aphis sp. on a lily and Hemerophla atrilineata, Butl. on mulberry.
4. To make a practical use of this bacteria for the extermination of Gypsy-moth caterpillars, spray on plants the worms are feeding, sterilizel Water in which the bouillon or soy-bean cake decoction culture of Bacillus Disparis is thoroughly mixed up. or it is more economical and convenient to make use of thk body fluid of the diseased or dead caterpillars instead of the pure cultures for the spraying purpose.View full abstractDownload PDF (1866K)
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