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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
1-2
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
3-5
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
5-8
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
8-11
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
12-13
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
1974 Volume 20 Pages
14-15
Published: September 10, 1974
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Jûtarô HIRAO
1974 Volume 20 Pages
15-17
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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A survey of airborne planthoppers was conducted in relation to their transoceanic migration to Japan on the East China Sea during June 18-30, 1973. The vessel sailed continuously at a speed of 8 knots an hour. Three tow nets, 1 m in diameter, were set at the mast of the vessel, about 8 m above sea level, and inspected every 3 hours. Planthoppers were caught at the point of 28°30'-29°N and 122°30'-123°E only on June 21 during the navigation period. The total number of planthoppers caught by 3 nets was 179 Sogatella furcifera, 20 Nilaparvata lugens, 8S. longifurcifera, 7 Laodelphax striatellus, and 1 leafhopper, Nephotettix virescens, during the daytime of that day, when the vessel was located to the south of the front line soon after crossing it. It was windy, foggy or cloudy.
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[in Japanese]
1974 Volume 20 Pages
18-20
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
20-21
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
22-23
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
23-25
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
25-26
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Osamu SETOKUCHI
1974 Volume 20 Pages
26-27
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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The sexuals of Longiunguis sacchari (ZEHENTNER) on sorghums appear in autumn, and the oviparous females deposit the overwintering eggs on the host plants in a field. In this paper, oviposition of the oviparous female was reported. The average ovipositing period was 7 days, and the average number of eggs per female was 5.7, being deposited within a few days for the most part after the beginning of oviposition. The oviparous females were reared on the mature leaves of sorghum Sorghum vulgare) in the laboratory (mean temperature 17.7°C) and began to deposit within 2 days after mating. Eggs were usually deposited on the underside of leaf blade or leaf sheaths in the lower parts of plants in the field.
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[in Japanese]
1974 Volume 20 Pages
28-30
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
31-32
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
32-34
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
35-37
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Tadatora OKADA
1974 Volume 20 Pages
37-39
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Spodoptera litura nuclear polyhedrosis virus was sprayed in mixtures of each of 17 materials on Colocasia leaves to examine the degree of persistence of viral activity under outdoor conditions. It turned out, in some occasions, that an, addition of egg albumine, egg yolk, an artificial diet, feces of the Spodoptera larvae, and lima bean powder was equally or more, but not extremely, effective in protecting the virus from inactivation by sun light, compared with the effect of gelatin. And it was revealed that activity of the virus sprayed was decreased more rapidly in summer than in fall. The decreasing virus-activity after spray could be shown by a linear regression taking percent infection as probit [y] and time (days) elapsed after spray as log (n+1) [x]. When sprayed with gelatin, high correlation was found between the degree of virus-inactivation (=coefficient of the regression line) and either the average of daily temperature or the average of daily possible insolation during the test period. Amount of rain fall and average duration of sunshine were not shown to be highly correlated to the degree.
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Yoshinobu ARATAKE, Tsuruo KAYAMURA
1974 Volume 20 Pages
39-42
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Cross-transmission tests of a cytoplasmic-polyhedrosis virus (CPV) of the pine caterpillar, Dendrolimus spectabilis, to other lepidopterous insect species were carried out in the present study. Dendrolimus CPV was infective to Scopelodes contracta, Clostera anastmosis orientalis, Malacosoma neustria testacea, Euproctis similis, Lymantria dispar japonica, and Dictyoploca japonica, whereas it was not infective to Spilarctia subcarnea, Pryeria sinica, Artona funeralis, Mamestra illoba, Spodoptera litura, Arcte coerulea, and Glyphodes pyloalis. The Dendrolimus CPV passed through Clostera larvae still retained the infectivity to the original host.
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Yoshinobu ARATAKE, Tsuruo KAYAMURA
1974 Volume 20 Pages
42-44
Published: September 10, 1974
Released on J-STAGE: December 09, 2009
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Lymantria dispar japonica larvae are known to be a polyphagous insect. In the present study, effects of different food plants on the susceptibility of the Lymantria larvae to a cytoplasmic-polyhedrosis virus(CPV) of the silkworm, Bombyx mori, were investigated. The larvae fed on Quercus acutissima leaves alone, several days before and after the virus inoculation, were shown to be more susceptible to Bombyx CPV than the larvae reared with Rosa multiflora leaves only. When three food plants, Q. acutissima, R. multiflora, and Prunus yedoensis, were fed by Lymantria larvae in differebt times, such as several days before or after the virus inoculation, the susceptibility of the larvae to Bombyx CPV was varied mainly with the difference in leaves fed on after the virus inoculation: the feeding of P. yedoensis most enhanced the larval susceptibility, while the feeding of Q. acutissima gave the least effect.
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
44-46
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
1974 Volume 20 Pages
46-48
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
48-49
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
49-51
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
52-53
Published: September 10, 1974
Released on J-STAGE: December 09, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
53-56
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
56-57
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
58-60
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
60-62
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Norisato GAMO, Takayuki YAMAGUCHI, Sadao KIMURA
1974 Volume 20 Pages
62-65
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Population of Xanthomonas oryzae phage in water of irrigation channels and paddy fields was investigated periodically during the rice growing period in diseased area of Odayama and Ogame districts, Obama Town, Nagasaki Prefecture. Detection of natural phage was made by use of the phage type A strain of X. oryzae. There was a positive correlation approximately between the disease grade and the phage density. The time of first disease occurrence could be forecasted by first detectable time and following increase trend of phage population.
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
65-68
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
68-69
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
69-72
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Shohei MATSUMOTO
1974 Volume 20 Pages
72-74
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Reiho, possessing rice blast disease resistant gene Pi-ta
2 which was derived from Tadukan, was attacked severely after four years from releasing to the extension. Causal pathogenic race is differentiated as T-2', which is well resemble to T-2 except for unstable reaction on Homare-nishiki, Ginga, Norin 22 and Norin 20 among Japanese differential varieties.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
74-76
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
76-78
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
78-81
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
82-84
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
84-87
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
87-88
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Kinji TANAKA, Fukuji NONAKA
1974 Volume 20 Pages
88-90
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Aspergillus sp. and Fusarium sp. were isolated with high frequency from onion bulbs rotted during storage. The both fungi had no pathogenicity to non-wounded scales, whereas showed the ability to rot the wounded ones. It seemed to be true that the isolates of Aspergillus sp. was probably concerned in rot of onion bulbs preserved in summer.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
91-92
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
93-94
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
95-96
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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Fukuji NONAKA, Syogo YAMAGUCHI, Takahiko OTA
1974 Volume 20 Pages
97-99
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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An antifungal compound, a phytoalexin-like substance, was isolated from the lesions of Sour orange leaves infected with Xanthomonas citri DOWSON, causal bacterium of citrus canker. Absorbance maximum and minimum were observed at 288 and 268 nm, respectively, in the ultraviolet absorption spectrum of the antifungal compound refined by thin layer chromatography. The purified substance inhibited severely spore germ-tube growth.
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Fukuji NONAKA, Takayoshi NOJIMA, Heiichi HASHIMOTO
1974 Volume 20 Pages
99-101
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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A number of perithecia was produced by the culture of Cylindrocladium sp., conidial stage of Calonectria, isolated from Acacia melanoxylon R. Br. on potato sucrose agar. Perithecia were superficial, globose to obovate, 298-530 μ in height, 289-482 μ'in diameter, orange to red in color. Asci were hyaline, clavate, 8-spored, 144-240×14-29 μ. Ascospore was hyaline, fusoid, slightly curved, 1 or 3 septate, 39-44×5 μ. Conidia were hyaline, cylindric, straight, obtuse at the ends, 1 septate, 31-53×3-5 (aver. 44×4) μ. The present fungus was identified as Calonectria kyotensis TERASHITA by these morphological observations on the fruit bodies.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
101-102
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese]
1974 Volume 20 Pages
103-105
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese]
1974 Volume 20 Pages
105-107
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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[in Japanese], [in Japanese], [in Japanese]
1974 Volume 20 Pages
107-108
Published: September 10, 1974
Released on J-STAGE: May 22, 2009
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