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Volume 17, Issue 4
Displaying 1-11 of 11 articles from this issue
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Shigeo TANAKA1974 Volume 17 Issue 4 Pages 231-236
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSThe present paper reported the morphological studies on Dioscorea opposita Thunb. and D. alata L. which belong to the section Enantiophyllum in Dioscorea.
In the anatomical form of the stem and tuber, there were a close resemblance between D. opposita and D. alata. In this paper the auther made clear that their stem had transformed collateral vascular bundles, and that their tuber had any vascular bundles but radial ones.
Futhermore the tuber in D. alata could be apparently divided into two parts— the first and second swelling of the tuber. The first swelling of the tuber had many roots. Then the author observed above two parts of the tuber. The first swelling of the tuber was divided into two thick layers bordered by a thin chlorophyll containing layer. Starch grains and vascular bundles were only observed in the inner layer. But, there was no layer structure in the lower end of the tuber, and the starch grains and vascular bundles were observed over the whole tissue. From the result of this observation the author presumed that the inner layer in the first swelling of the tuber was an extension of the stem, from which the lower end of the tuber swelled. And from the morphological succession among the above-ground stem, the first and second swelling of the tuber, it could be suggested that the tuber was a simple swelling product of the stem, and it contained no element of the rhizome.View full abstractDownload PDF (6189K) -
I. On the possibility of mechanized farmingTadashi MATSUNO1974 Volume 17 Issue 4 Pages 237-244
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
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III. Relations between germination of immature seed and seed dormancy, and growth inhibitors in riceMitsuru HAYASHI, Masami HIMENO1974 Volume 17 Issue 4 Pages 245-249
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSEndogenous growth substances in rice seeds were assayed with Avena straight growth test at various stages during the term from immaturing to maturing stages, in order to make clear mechanism of germination in immature seed and of dormancy in rice seed which would be controlled by several growth substances.
Growth substances of acidic fraction of extract in immature seed were confirmed as the same in quality among all varieties used, and these substances were ascertained to be composed of two growth inhibitors and one growth promotor.
Germination of immature seed seemed to be regulated by growth inhibitor found in Rf 0.7-0.8 zone which found to have abscisic acid activity. That is, decrease in amount of the inhibitor took place suddenly in early stage of ripening in non-dormant seed, and germination of seed was activated by this decrease in amount of the inhibitor. On the other hand, decrease in amount of the inhibitor in dormant seed was hardly recognized during ripening period, and amount of the inhibitor in seed was gradually decreased during the period after the complete maturity. There was parallel relationship between activation of germination and decrease in amount of the inhibitor in non-dormant and dormant seeds.
Basing on this result, it was concluded that amount of inhibitor in seed of dormant seed differed clearly from that of non-dormant seeds at complete maturation, and it may be satisfactorily considered that variation and varietal difference of germination and period of dormancy were primarily determined by the speed of decrease of the inhibitor.View full abstractDownload PDF (618K) -
III. The effects of temperature and humidity on the growth of Duboisia myoporoides R. BR.Toshihiro IKENAGA, Hiromu OHASHI1974 Volume 17 Issue 4 Pages 250-256
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSD, myoporoides R. BR. were cultivated from June to October (1972) on the following conditions: (A) high temperature and high humidity; (B) high temperature and low humidity; (C) low temperature and low humidity.
1) More plants died under the first condition (A), while almost none of them died under the other two conditions.
2) Under the condition (A) and (B), the stems grew tall and the leaves increased in number. Under the condition (C), however, this was not true.
3) On the three conditions noted above the yield of stems and roots was almost the same. Although the yield of leaves was almost the same under the condition (A) and (B), it was very small in quantity under the condition (C) .
4) The weight of the unit leaf area was more under the condition (C) than under the other conditions, and the weight was almost the same under the condition (A) and (B) .
5) The total alkaloid percentage in the leaves showed almost no difference under the three conditions, but under the condition (A) it had a tendency to decrease.
6) The scopolamine content of the alkaloid hardly showed any difference under the three conditions but under the condition (A) it did tend to increase somewhat.
7) The yield of the total alkaloid and scopolamine content in the plant depended on the amount of leaves.View full abstractDownload PDF (2393K) -
I. Determination of blood constituents and the differential leukocyte countJinzo OBARA, Min SOE, Maung MAUNG SA, Khin MAUNG NYUNT1974 Volume 17 Issue 4 Pages 257-260
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSTen items of blood constituents of Burmese buffaloes and cattle, compsising each 23 and 28 animals were determined. The blood samples used were mainly those collected from the Rangoon slaughter house.
Mean values with standard deviation and range of both animals were shown in Table 1. It was found that when compared with values seen in the literature, RBC count and Hb were nearly the minimum limitation of the normal range in both animals. On the other hand, WBC count and blood sugar were beyond the normal and NPN and urea nitropen were near the maximum of the range in buffaloes. Calcium was below or near the minimum in both animals and phosphorus within the normal range. Making a comparison between buffaloes and cattle, RBC count was less in buffaloes than cattle, while WBC count, Ca and inorganic P were less in cattle than buffaloes, the difference being statistically significant.
Differential leukocyte count carried out with another 87 buffaloes indicated an average value of 57.5% in lymphocytes, 28.8% in neutrophis, 0.9% in monocytes and 12.9% in eosinophils.View full abstractDownload PDF (412K) -
II. Electrophoresis of the serum proteinJinzo OBARA, Toshi WATANABE, Maung MAUNG SA, Min SOE1974 Volume 17 Issue 4 Pages 261-264
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSRandomly collected serum samples of 57 buffaloes and 18 cattle from the Rangoon slaughter house were subjected for the electrophoresis. An extremely low value of albumin fraction and accordingly a decrease of A/G ratio were observed in both animals especially in buffaloes. Possible reasons were discussed and a severe parasite infestation observed in the animal was considered as the most reasonable one. The value would, therefore, be a practial representation of serum protein fractions of Burmese buffaloes and cattle.View full abstractDownload PDF (327K) -
[in Japanese]1974 Volume 17 Issue 4 Pages 265
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
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[in Japanese]1974 Volume 17 Issue 4 Pages 265a-269
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
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[in Japanese]1974 Volume 17 Issue 4 Pages 269-272
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (624K) -
1974 Volume 17 Issue 4 Pages 272-273
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (241K) -
[in Japanese]1974 Volume 17 Issue 4 Pages 274-277
Published: March 25, 1974
Released on J-STAGE: March 19, 2010
JOURNAL FREE ACCESSDownload PDF (635K)
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