Palynological and cytological observations in SpanishSonchus(Asteraceae)
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چکیده
منابع مشابه
Botanical aspects of Heteropterys umbellata (Malpighiaceae): a cytological and palynological approach.
The genus Heteropterys is one of the major genera in Malpighiaceae. However, few cytological and palynological studies were reported. The present work described for the first time the chromosome number, heterochromatin pattern, meiotic behavior, pollen viability and palynological aspects of Heteropterys ubellata, a very spread species. One large Brazilian population was evaluated using conventi...
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During the course of an experimental, fine structural study of Blepharisma, certain aspects of the normal anatomy of the cell came to our attention. Although Blepharisma is the subject of two recent reports (9, 10), these features have, to our knowledge, hitherto been neglected in the literature. Furthermore, we feel that the present report may serve to clarify some of the recent work on the cl...
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Cytological studies on the sporulation process of Clostridium perfringens have been limited by the fact that the organism sporulates very poorly on most laboratory media. Attempts to promote extensive sporulation of this organism have met with little success in the past (Simmonds, 1915; Adamson, 1918; Jahlons, 1920; Headlee, 1931; Bethge, 1947). Some investigators (Hobbs et al., 1953) have had ...
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ژورنال
عنوان ژورنال: Grana
سال: 1993
ISSN: 0017-3134,1651-2049
DOI: 10.1080/00173139309428962