Ultrastructure and function of the nectaries of New Zealand bracken (Pteridium esculentum(Forst. f.) Cockayne)
نویسندگان
چکیده
منابع مشابه
An ecological and historical review of bracken (Pteridium esculentum) in New Zealand, and its cultural significance
New Zealand bracken (Pteridium esculentum) belongs to a group of closely related fern species of near global extent. Pteridium species worldwide are aggressive, highly productive, seral plants, functionally more akin to shrubs than ferns. Their deeply buried starch-rich rhizomes allow them to survive repeated fire and their efficient nutrient uptake permits exploitation of a wide range of soils...
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15 صفحه اولa comparative analysis of the marginal microleakages of two pit and fissure sealans, conseal-f and conseal clear
چکیده ندارد.
15 صفحه اولBracken (Pteridium aquilinum); the effect of steaming on the nutritive value of bracken hay.
The bracken fern (Pteridium aquilinum) has been known for a long time to be poisonous to cattle (Penberthy, 1893) and horses (Muller, 1897) under farm conditions. Field cases of bracken poisoning in sheep are almost unknown; the more selective feeding habits of sheep may be responsible for their apparent immunity. Bracken poisoning has been experimentally produced in cattle (Almond, I 894), hor...
متن کاملGlobal chloroplast phylogeny and biogeography of bracken (Pteridium; Dennstaedtiaceae).
Bracken ferns (genus Pteridium) represent an ancient species complex with a natural worldwide distribution. Pteridium has historically been treated as comprising a single species, but recent treatments have recognized several related species. Phenotypic plasticity, geographically structured morphological variation, and geographically biased sampling have all contributed to taxonomic confusion i...
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ژورنال
عنوان ژورنال: New Zealand Journal of Botany
سال: 1994
ISSN: 0028-825X,1175-8643
DOI: 10.1080/0028825x.1994.10412935