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| 11. |
Cytological Studies inHeliotropiumfrom West Pakistan |
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Caryologia,
Volume 14,
Issue 2,
1961,
Page 313-318
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PDF (556KB)
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摘要:
1.- Seven species ofHeliotropiumfrom Karachi, West Pakistan, were studied cytologically to find out the possible trends of polyploid adaptation, as well as to provide data that could be used taxonomically.2.- Including previous cytological information, the genus showed a considerable variation in chromosome numbers. The haploid chromosome numbers were found to be n = 8, 12, 14, 16, 24 and 32. These aneuploids and polyploids occupy a different ecological condition than the diploid, extending apparently, to more recent habitats which are more severe.3.- Presence of multivalents as well as univalents inH. rariflorumwithn= 24 chromosomes indicates it to be a segmental allopolyploid.4.- The three morphologically similar speciesH. lignosum, H. tuberculosumandH. undulatum, possess a similar chromosome number ofn= 16. However,H. undulatumchromosomes differ in being smaller than the other two species
ISSN:0008-7114
DOI:10.1080/00087114.1961.10796035
出版商:Taylor & Francis
年代:1961
数据来源: Taylor
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| 12. |
Lo Sviluppo del Gametofito Femminile diHypochaeris Aetnensis L. |
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Caryologia,
Volume 14,
Issue 2,
1961,
Page 319-325
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PDF (916KB)
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摘要:
L'Autore studia il gametofito femminile diHypochaeris aetnensisL. (Asteraceae, Sez.Seriola), che risulta del tipo di sviluppo normale otto-nucleato.
ISSN:0008-7114
DOI:10.1080/00087114.1961.10796036
出版商:Taylor & Francis
年代:1961
数据来源: Taylor
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| 13. |
Notizie |
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Caryologia,
Volume 14,
Issue 2,
1961,
Page 327-328
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PDF (84KB)
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ISSN:0008-7114
DOI:10.1080/00087114.1961.10796037
出版商:Taylor & Francis
年代:1961
数据来源: Taylor
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