| 1. |
Der Eigenartige Verlauf der I. Meiotischen Prophase vonRhinanthus, die Riesenchromosomen und das Besondere Verhalten der Kurzen Chromosomen in Mitose, Meiose und Hochendopolyploiden Kernen |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 135-152
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摘要:
Rhinanthus alectorolophus, minor, serotinusundaristatusvon Fundorten in Niederösterreich bzw. Tirol besitzen durchwegs im haploiden Chromosomensatz 7 relativ grosse ungleichschenkelige (L-) und 4 kleine gleichschenkelige (K-) Chromosomen. Die ersteren sind zu einem grossen Teil heterochromatisch, die letzteren praktisch rein euchromatisch. Der Formwechsel der K-Chromosomen ist in der Mitose und Meiose gegenüber dem der L-Chromosomen verschoben.
ISSN:0008-7114
DOI:10.1080/00087114.1967.10796253
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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| 2. |
The DNA Content of Nuclei in the Embryo of Dry Seeds ofPinus PineaandLactuca Sativa |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 153-161
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摘要:
The DNA content of nuclei in the embryo of dry seeds ofPinus pineaandLactuca sativawas determined by means of a Deeley type cytophotometer. It was found that in the root apex, shoot apex and cotyledon inPinusand in the root apex and cotyledon inLactucaall nuclei measured were 2C. Only in the root apex of one embryo (probably an immature seed) ofLactucawere both 2C and 4C nuclei found.
ISSN:0008-7114
DOI:10.1080/00087114.1967.10796254
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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| 3. |
Chromosome Evolution in the GenusCrinum |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 163-179
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摘要:
The somatic chromosomes of 28 accessions ofCrinumhave been studies. Ten of these were polyploid (3x, 4x, 6x, 8x) and the remainder diploid. B chromosomes were present in seven plants. Aneusomatic variation does not occur to any significant extent.
ISSN:0008-7114
DOI:10.1080/00087114.1967.10796255
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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| 4. |
A Second Example of Normal Coincident Endopolyploidy and Polyteny in Salivary Gland Nuclei |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 181-186
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摘要:
A second example of normally occurring coincident endopolyploidy and polyteny is reported from the larval salivary gland nuclei of an unidentified Cecidomyid species (possiblyLestodiplosis pisi). Two endopolyploid nuclei were found near the anterior end of each salivary gland in « super-giant » cells. These appear to develop from ordinary « diploid » polytene nuclei by progressive splitting.
ISSN:0008-7114
DOI:10.1080/00087114.1967.10796256
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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| 5. |
Cytological Observations on Tumor Tissue of the HybridNicotiana Suaveolens×N. Langsdorffiiin Vivo and in Vitro |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 187-190
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ISSN:0008-7114
DOI:10.1080/00087114.1967.10796257
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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| 6. |
Osservazioni Sulla Ultrastruttura dei Dotti Escretori Delle Ghiandole Salivari diHelix AspersaMüller (Mollusca Gastropoda Pulmonata) |
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Caryologia,
Volume 20,
Issue 2,
1967,
Page 191-206
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摘要:
Le cellule secernenti delle ghiandole salivari diHelix aspersaMüller presentano vari aspetti ultrastrutturali. Esse possono però venir riportate a due soli tipi cellulari funzionalmente diversi: mucociti e zimociti. I condotti escretori di calibro maggiore sono tappezzati da un epitelio ricco di microvilli e di introflessioni della membrana cellulare. Queste ultime emanano dalla regione basale delle cellule, si spingono fino in prossimità della regione apicale e dividono il citoplasma in tanti minuscoli compartimenti, soprattutto occupati da un gran numero di mitocondri. Il quadro ricorda, in complesso, quello di un tipico epitelio bacillare, quale si riscontra, ad esempio, nei tubuli del rene dei Vertebrati.
ISSN:0008-7114
DOI:10.1080/00087114.1967.10796258
出版商:Taylor & Francis
年代:1967
数据来源: Taylor
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