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Volume 81, Issue 966
Displaying 1-5 of 5 articles from this issue
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Cobalt in the Stylar TissueYoshio YAMADA, Seikichi CHO1968 Volume 81 Issue 966 Pages 567-574
Published: 1968
Released on J-STAGE: October 31, 2006
JOURNAL FREE ACCESSThe cobalt, copper and nickel contents of various floral tissues of Lilium longiflorum were determined polarographically at consecutive three stages. The cobalt content of the pistillate tissues, except for the ovary, of young flower bud was apparently different from the corresponding values obtained with mature flower bud and with pollinated flower. As differentiation of the flower bud proceeds, there was a marked increase in the amount of cobalt in both the stigma and the style; on the contrary, no significant change of copper and nickel contents in either the stigma or the style was found. However, the style of pollinated flower exhibited a significant decrease in cobalt when compared with that of mature one. The cobalt content in the style from pollinated flower was about half of the value found in the style from mature one. In the case of ovary, the contents of cobalt, copper and nickel remained constant and almost unchanged during the growth and the subsequent pollination periods. On the other hand, the cobalt content of the pollen grains was far less than those of the stigma and style. In some cases, the amount of this metal of the pollen grains was about one-eighth of the value for the mature style. It is suggested that the cobalt may bear a functional relationship to the stylar metabolism and the growth of pollen tubes.View full abstractDownload PDF (1402K) -
Singo NAKAZAWA1968 Volume 81 Issue 966 Pages 575-581
Published: 1968
Released on J-STAGE: October 31, 2006
JOURNAL FREE ACCESSSpores of Equisetum arvense, Osmunda japonica, Pteris vittata, andDryopteris varia were sown in Knop's solutions containing β-mercaptoethanol, cysteine, bal, reduced glutathione, oxidized glutathione, cystine, dithiodiglycolic acid, and colchicine, and were incubated under constant illumination of white light at 1, 200lux. The results were as follows. (1) Elongation of the rhizoid was variously inhibited by mercaptoethanol, bal and by reduced glutathione, but not by cystine, oxidized glutathione and by dithiodiglycolic acid. Protonema cells were scarcely affected by any of these agents. Effect of colchicine was not very remarkable for rhizoids. (2) Protonema cell was hypertrophied with colchicine, but not or scarcely by SH- or SS-containing agents so far as tested. (3) Judging from the experiments, it seems that the cellular polarity is based on SS-linkage of proteins both in the rhizoid and in the protonema. So that, it is obstructed by SH groups or by colchicine, while not affected by SS groups. The specific protein or the state of protein may be different in rhizoid from in protonema, as the former seems to be affected by SH groups but scarcely by colchicine, while the latter by colchicine but scarcely by SH groups.View full abstractDownload PDF (1080K) -
Studies on sunflower pollen by immuno-electrophoresisYOZO IWANAMI1968 Volume 81 Issue 966 Pages 582-589
Published: 1968
Released on J-STAGE: October 31, 2006
JOURNAL FREE ACCESSThe difference of the pollen of 6 kinds of sunflower A-F was studied by the method of immuno-electrophoresis.
Between the extracts of these pollen and the antiserum taken from the pollen of sunflower B, fifteen precipitation lines appeared in agar gel plate and there is a little difference between one and another. The breed names of unknown sunflowers could be assumed by seeing the charactristic precipitation lines.
The number of the line produced by immuno-electrophoresis between antiserum prepared from sunflower and antigen from Coreopsis pollen was five in all, and only one line could be observed between the antiserum from sunflower pollen and the antigen from Tulipa pollen or between the antiserum from Tulipa pollen and the antigen from sunflower pollen.View full abstractDownload PDF (784K) -
The Karyotype Analysis in Genus TricyrtisTakuzo NAKAMURA1968 Volume 81 Issue 966 Pages 590-599
Published: 1968
Released on J-STAGE: October 31, 2006
JOURNAL FREE ACCESSThe chromosome numbers and karyotypes were studied in eight species of the genus Tricyrtis of the family Liliaceae. The numbers of somatic chromosomes were counted in T. macropoda, T. nana macropoda and T. flava subsp. ohsumiensis for the first time. The basic number of chromosomes was found to be 13 in the genus Tricyrtis. All the members studied are diploid forms. Karyological similarities are found in T. nana, T flava and T. flava subsp. ohsumiensis. The karyological and geographical considerations are given in the genusTricyrtisView full abstractDownload PDF (1586K) -
Chihiro TAKAHASHI1968 Volume 81 Issue 966 Pages 600-602
Published: 1968
Released on J-STAGE: October 31, 2006
JOURNAL FREE ACCESSDownload PDF (277K)
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