Results 141 to 150 of about 1,547 (181)

Substructure in negatively stained flagella of Pteridium spermatozoids

Journal of Ultrastructure Research, 1967
Phosphotungstate negative staining applied to disintegrated flagella from Pteridium sperm cells revealed that each subfiber in the “nine plus two” pattern was composed of about twelve cylindrically arranged protofibrils. Individual protofibrils were about 35 A across and with a center-to-center spacing of 50 A between adjacent units.
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Evolutionary studies of the chloroplast genome in Pteridium

Plant Science, 1991
Abstract Although bracken ferns of the genus Pteridium are abundant, world-wide in distribution and of economic importance in agriculture and forestry as well as in animal and human health, taxonomic and evolutionary studies of the genus have previously lacked an adequate objective basis.
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Phylloplane mycoflora of bracken, Pteridium aquilinum

Transactions of the British Mycological Society, 1974
The phylloplane mycoflora on the fronds of bracken, Pteridium aquilinum , was followed during two seasons and was shown to be similar to that on angiosperm leaves. The succession involved Aureobasidium pullulans, Botrytis cinerea and Clado-sporium herbarum followed by Alternaria alternata and Epicoccum purpurascens .
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Au sujet de Pteridium aquilinum

Bulletin mensuel de la Société linnéenne de Lyon, 1965
Combes F. Au sujet de Pteridium aquilinum. In: Bulletin mensuel de la Société linnéenne de Lyon, 34ᵉ année, n°8, octobre 1965. p. 340.
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A new species of Pteridiaceae-Pteridium Dachingshanense

Journal of Palaeosciences, 1983
A new fossil species, Pteridium dachingshanense, is described from the Early Cretaceous strata in Dachingshan Range of Neimonggol Autonomous Region (Inner Mongol), China. The species shows some characteristics of Pteridium, such as the continuous marginal sorus and a true scarious indusium. It differs from the living bracken fern Pteridium aquilinum in
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INDUCED APOGAMY IN DIPLOID GAMETOPHYTES OF PTERIDIUM

Canadian Journal of Botany, 1966
Diploid gametophytes were produced via self-fertilization and apospory from a strain of haploid gametophytes which underwent apogamy in sterile culture. These diploid gametophytes of the fern, Pteridium, demonstrated quantitative differences from the haploid prothalli.
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Pteridium

2020
H.J. Beentje, S.A.L. Smith, B. Verdcourt
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Flavonol glycosides from Pteridium aquilinum

Phytochemistry, 1995
Abstract Two new flavonol glycosides from aerial parts of Pteridium aquilinum were identified as quercetin 3- O - β -laminaribioside and isorhamnetin 3- o - β -laminaribioside by chemical and spectroscopic methods.
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Pteridium aquilinum (bracken)

PlantwisePlus Knowledge Bank, 2022
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Allelochemicals From Pteridium arachnoideum

2023
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