Über die Entstehung der generativen Zelle bei Scirpus uniglumis Link durch „freie Zellbildung”

Piech, Karolina

doi:10.1007/bf01915868

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Second Pollen Mitosis1

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1932

2009

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Cited by 12 publications

(1 citation statement)

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“…Often, however, they are observed near the vegetative nucleus. Their cell walls are difficult to observe, and according to PIECH (1924PIECH ( b, 1928 the sperm nuclei are surrounded by real cell membranes in palustris, but are naked in uniglumis.…”

Section: Second Pollen Mitosismentioning

confidence: 99%

Chromosome Studies in Eleocharis, Subser. Palustres

Strandhede¹

2009

Hereditas

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Section: Second Pollen Mitosismentioning

confidence: 99%

Chromosome Studies in Eleocharis, Subser. Palustres

Strandhede¹

2009

Hereditas

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Systematic significance of pollen arrangement in MICROSPORANGIA OF POACEAE AND Cyperaceaei REVIEW AND OBSERVATIONS ON REPRESENTATIVE TAX A

Kirpes

Clark

Lersten

1996

American J of Botany

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An anatomical survey of anthers of the Poaceae and Cyperaceae and two related families, the Restionaceae and Flagellariaceae, was conducted to determine the taxonomic distribution and possible phylogenetic significance of pollen arrangement. An unusual pollen arrangement was known from a small number of taxa in the Poaceae and Cyperaceae, in which a single, uniseriate cylinder of pollen grains is arranged in the anther locule such that each grain is in contact with the tapetum (termed here “peripheral” pollen). This contrasts with the prevailing arrangement in other angiosperms in which the locule contains a relatively large number of pollen grains in no special configuration, with many interior grains that never touch the tapetum (termed here “central” pollen). A total of 48 species in these four families was examined in this study, and observations on pollen arrangement for numerous additional species in these families were gleaned from the literature. We confirm that the peripheral arrangement is predominant in Poaceae and Cyperaceae, although both families also include species with central pollen, whereas only central pollen is found in Restionaceae and Flagellariaceae. In the peripheral arrangement, the pore of the pollen grain or pseudomonad, when observed, is in contact with the tapetum, but it has not been definitively demonstrated that this is always the case. Peripheral pollen in the Poaceae and Cyperaceae is nonhomologous because of the presence of pseudomonads in the latter family. It remains unexplained why peripherally arranged pollen or pseudomonads, with the attendant reduction in the number of pollen grains, should be associated with anemophily in these two families.

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Anatomische Grundlagen des Wachstums

Thielke¹

1961

Growth and Growth Substances / Wachstum Und Wuchsstoffe

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Über die Entstehung der generativen Zelle bei Scirpus uniglumis Link durch „freie Zellbildung”

Cited by 12 publications

References 16 publications

Chromosome Studies in Eleocharis, Subser. Palustres

Chromosome Studies in Eleocharis, Subser. Palustres

Systematic significance of pollen arrangement in MICROSPORANGIA OF POACEAE AND Cyperaceaei REVIEW AND OBSERVATIONS ON REPRESENTATIVE TAX A

Anatomische Grundlagen des Wachstums

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