Polygonum

About: Polygonum is a research topic. Over the lifetime, 1230 publications have been published within this topic receiving 12765 citations.

Studies on weed species of the genus polygonum vii. effect of nutrition and other factors on seed characteristics and germination behaviour of p. lapathifolium

Abstract: Summary. . Plants of Polygonum lapathifolium were grown either in a glasshouse or outside, at a high or a low level of mineral nutrition, and either with or without competition from barley. The viability and percentage emergence of seedlings from germinated seeds (planted in sterile compost) were higher with seed from glasshouse-grown plants. High nutrition increased plant weight, seed production and seed weight, and also increased seedling emergence. Competition reduced plant weight, but had only a small, non-significant, effect on seed production. Seed from plants grown with competition had a greater percentage seedling emergence from germinated seeds.

Uses of giant knotweed for preventing and treating insulin resistance and related metabolic diseases thereof

Abstract: The invention discloses Polygonum Cuspidatum (PC) and application of an extract thereof to preparing medicament for preventing and treating synalbumin resistant and correlative metabolic diseases, discloses a preparation method for the extract at the same time, and moreover, also discloses application of pharmaceutical composition comprising polygonum or (and) the extract of the polygonum as a medicament and a health-care product, in particular application to preparing the medicament and the health-care product for preventing and treating the synalbumin resistant and correlative metabolic diseases and the like.

Allelopathy of 5 associated species on Mikania micrantha H. B. K.

Abstract: Allelopathy of 5 associated species(Cyperus difformis,Polygonum hydropiper,Alternanthera philoxcroides,Bidens pilosa L.and Ipomoea batatas)on invasive plant Mikania micrantha H.B.K was studied.The bioactivity of aqueous extract from overground part of 5associated species was evaluated on the growth of Mikania micrantha H.B.K.seedling.The results showed that aqueous extract from 5 associated species inhibited growth of Mikania micrantha H.B.K.seedling and the inhibiting order was Alternanthera philoxcroidesCyperus difformisBidens pilosa L.,the Polygonum hydropiper and Ipomoea batatas had similar the inhibition rate but were obviously weak to others.The weight were inhibited more than stem and root.These results showed associated species had allelopathic to Mikania micrantha H.B.K.seedling and effects of alien populations were more than that of local species.

Molluscicidal Potency of Polygonum lanigerum Meisn on the Freshwater Snail, Bulinus globosus (Morelet)

Abstract: Casual observation reveals that the freshwater snail Bulinus globosus (Morelet), never preponderates in habitats that support the plant Polygonum lanigerum Meisn. An investigation on toxicity of aqueous extracts of the leaves and stem of this plant on Bulinus globosus in a 24 h static bioassay demonstrated toxicosis. The 24-h LC50 for the leaf and stem extracts were 29.9 and 35.8 mg/liter, respectively. The relative potency of the extracts from the two plant parts was not significantly different.