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Volume 67, Issue 793-794
Displaying 1-8 of 8 articles from this issue
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Egbert H. WALKER1954 Volume 67 Issue 793-794 Pages 155-162
Published: 1954
Released on J-STAGE: December 05, 2006
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Hideo KASAKI1954 Volume 67 Issue 793-794 Pages 163-166
Published: 1954
Released on J-STAGE: December 05, 2006
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Noriwo TAKAKI1954 Volume 67 Issue 793-794 Pages 167-171
Published: 1954
Released on J-STAGE: December 05, 2006
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Haruo OKUNO1954 Volume 67 Issue 793-794 Pages 172-177
Published: 1954
Released on J-STAGE: December 05, 2006
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“Agarography”, the Salting out in Agaragar ColumnYoshihide MOMOTANI, Masaru SOGAMI1954 Volume 67 Issue 793-794 Pages 178-183
Published: 1954
Released on J-STAGE: December 05, 2006
JOURNAL FREE ACCESSThe process of salting out of protein in the agaragar column was observed using turbidimetry, the column which had contained protein homogeneously being put in the water bath in which a concentration gradient of ammonium sulfate was established by diffusion (Fig. 1-1),
The distribution of turbidity along the column changed with time from P1 to p2, and eventually to P3, which represents the formation of coagulation bands (Fig. 1-2, i, ii and v). These bands correspond to the number of kinds of protein which had been mixed in the agaragar column. The number can be also by the curve obtained by differentiating the curve P1 (Fig. 1-2, iv and v).
Some experiments, quantitative titration of protein solution by ammonium sulfate solution etc. (Fig. 3-9), were made in order to confirm the conclusion and to explain the phenomena. But adequate explanation for the formation of coagulation bands awaits further studies.
The coagulation band formation can be conveniently used for determining the number of components in a protein mixture. The author has tried to analyse the protein fraction from the seeds of Brassica species (Fig. 2). The method may be called the agarography.
The coagulation bands obtained are preservable, at least for months.View full abstractDownload PDF (822K) -
Yukio HUZIWARA1954 Volume 67 Issue 793-794 Pages 184-189
Published: 1954
Released on J-STAGE: December 05, 2006
JOURNAL FREE ACCESS1. The karyotypes of 4 species and 2 subspecies of Aster are reported.
2. The karyotype formulae are as follows; Aster tataricus L. K(2n)=54=2csAsm+2csBsm1+2Bst2+2Bsm3+10Bsm4+4Csm1+4Csm2+2Cm3+2Dst1+4Dsm2+6Dsm3+4Esm1+2Em2+6Fsm+2Gsm A. ageratoides subsp. angustifolius Kitamura K(2n) =36=2csAsm+2Bsm+2Csm+4Dsm+2Esm+4Fm+2Gsm+2Hsm+8Ism+6Jsm+2Km A. spathulifolius Maxim. K(2n)=18=2csAsm+2Bst1+2Bm2+8Csm+2Dsm1+2Dm2 A. pseudo-Asa-Grayi Makino K(2n)=36=2csAsm1+2csAsm2+2Bst1+2Bsm2+2Cst1+6Csm2+2Dsm1+8Dsm2+4Esm1+4Em2+2Fsm A. dubius subsp. glabratus Kitamura et Hara K(2n)=18=2Ast+2Bst1+2Bsm2+2Cst+2Dst+4Esm1+2Em2+2Fsm A. Tripolium L.
K(2n)=18=2Asm+2Bsm+6Cm+2Dsm+4Esm+2csFsmView full abstractDownload PDF (558K) -
On the Mitotic Division in the Antheridium of Sargassum Horneri (TURN.) AG. (Preliminary note)Mikisaburo HIROE1954 Volume 67 Issue 793-794 Pages 190-192
Published: 1954
Released on J-STAGE: December 05, 2006
JOURNAL FREE ACCESS1. In the antheridium of Sargassum Horneri, the nuclear divisions are repeated six times, resulting in 64 spermatozoids.
2. This plant has 32 chromosomes in the haploid phase.
3. This plant has centrosome-like bodies at the both poles of the spindle.View full abstractDownload PDF (1666K) -
The Relation of Daily Illuminating Period to Germination RateSigeo ISIKAWA, Tuyosi OOHUSA1954 Volume 67 Issue 793-794 Pages 193-197
Published: 1954
Released on J-STAGE: December 05, 2006
JOURNAL FREE ACCESSIn the writer's previous work1), it was reported that the spores of Athyrium niponicum showed evidently in their germination behaviors a typical character of “Long Day Plant”. presenting the highest rate under continuous exposure to light. Then, by using spores of 15 species of Japanese-grown ferns, the writers investigated whether the tendency of “Long Day Plant” observed in the germination of Athyrium spores applies, as a general tendency, to the germination behaviors of many other species of ferns.
First, under small intensity of light (10Lux), most of the experimented species were confirmed to belong to a type of “Long Day Plant”. Namely, as illuminating duration was lengthened, germination percentages went up progressively and reached the highest figure under continuous exposure to light. (Fig. 1). Secondly, the spores having a tendency of “Long Day Plant” were exposed to higher intensity of light (100 and 1000Lux). As a result, the following three tendencies were recognized in their germination behaviors. (1). Many species represented by Dryopteris showed a tendency that the higher germination percentage was obtained by a low intensity to light (10lux) than by larger intensities (100Lux and 1000Lux). (Fig. 3). (2). In Spicantopsis and Asplenium, the germination behaviors were not affected by light intensity, but promoted exclusively by the length of illuminating period. (Fig. 4). (3). In Pyrrosia, the germination behavior was the reverse to the tendency of Dryopteris.View full abstractDownload PDF (518K)
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