Topic
Convolvulus
About: Convolvulus is a research topic. Over the lifetime, 452 publications have been published within this topic receiving 4785 citations. The topic is also known as: Bindweed.
Papers published on a yearly basis
1 / 2
Papers
TL;DR: The patterns of colonization into Macaronesia demonstrated by Convolvulus and also by other multiple colonizing genera conform to either a pattern of phylogenetic distinctiveness or a checkerboard distribution of island lineages, consistent with the hypothesis that niche preemption is responsible for the limited number of colonizations into the region.
Abstract: A molecular phylogenetic analysis of the Macaronesian endemic species of Convolvulus was undertaken using data from the nuclear ribosomal internal transcribed spacer (ITS) regions. The results of the analysis support two introductions into Macaronesia from distantly related clades within Convolvulus and a subsequent back-colonization to the continent from within one of the clades. Hypothesized relationships between Macaronesian species and New World taxa and between the Canarian endemic C. caput-medusae and the Moroccan C. trabutianus are refuted. Both Macaronesian clades are shown to have Mediterranean sister groups although one is predominantly western Mediterranean and the other predominantly eastern Mediterranean in distribution. The patterns of colonization into Macaronesia demonstrated by Convolvulus and also by other multiple colonizing genera conform to either a pattern of phylogenetic distinctiveness or a checkerboard distribution of island lineages. Both are consistent with the hypothesis that niche preemption is responsible for the limited number of colonizations into the region. A review of sister group relationships demonstrates that, in common with Convolvulus, most Macaronesian groups have sister groups distributed in the near-continent (i.e., western Mediterranean). Disjunct sister group relationships (including Eastern Mediterranean disjunctions) occur in only 18% of groups.
226 citations
TL;DR: Field bindweed, Canada thistle, and tall morningglory metabolized the parent glyphosate to aminomethylphosphonic acid to a limited extent and 14C applied to excised leaves had disappeared within 25 days.
Abstract: Summary:
The pattern and extent of 14C-glyphosate [N-(phosphonomethyl)glycine] translocation from the treated leaf and metabolism of 14C-glyphosate were studied in field bindweed (Convolvulus arvensis L.), hedge bindweed (Convolvulus sepium L.). Canada thistle [Cirsium arvense (L.) Scop.] tall morning glory [lpomoea purpurea (L.) Roth.] and wild buckwheat (Polygonum convolvulus L.). 14C was translocated throughout the plants within 3 days with accumulation in the meristematic tips of the roots and shoots evident. Cross and longitudinal sections of stems and roots showed that the 14C was localized in the phloem. Field bindweed translocated 3–5% of the applied 14C from the treated leaf, hedge bindweed 21.6%, Canada thistle 7.8%, tall morningglory 6.5%, and wild buckwheat 5%. Field bindweed, Canada thistle, and tall morningglory metabolized the parent glyphosate to aminomethylphosphonic acid to a limited extent. This metabolite made up less than 15% of the total 14C. Of the total 14C applied to excised leaves, 50% had disappeared within 25 days.
135 citations
TL;DR: The studies suggested that the variable control of field bindweed observed in the field may be due to the occurrence of biotypes within a given popula- tion of this weed which differ in their susceptibility to gly- phosate.
Abstract: Biotypes of field bindweed (Convolvulus arvensis L. #3 CONAR) identified in Indiana varied widely in suscepti- bility to glyphosate (N-(phosphonomethyl)glycine) but not to 2,4-D ((2,4-dichlorophenoxy)acetic acid) or bentazon (3 - isopropyl - 1H- 2,1,3 - benzothiadiazin - 4(3H) -one 2,2 -di- oxide) in field tests. Significant differences in injury to two of the biotypes occurred with glyphosate applied at 1.12 to 4.48 kg ai/ha in greenhouse tests. Differences of greater than 70% in injury rating, root and shoot dry weight, and shoot regrowth dry weight occurred between the two bio- types at 2.24 kg/ha glyphosate. The susceptibility of the tolerant biotype at 2.24 kg/ha glyphosate was decreased by 40% as it increased in age, while the susceptible biotype sustained complete foliar necrosis when treated at all plant ages tested. Susceptibility differences between the two bio- types could not be correlated to differences in leaf stomatal or epidermal cell number. These studies suggested that the variable control of field bindweed observed in the field may be due to the occurrence of biotypes within a given popula- tion of this weed which differ in their susceptibility to gly- phosate.
108 citations
TL;DR: Results agree with the determination of habitat temporal heterogeneity for light and moisture availability, and support the tenet of predominance of a generalist strategy in changing environments.
Abstract: Ecological theory predicts that a generalist strategy should be more favored in changing environments than in stable environments. I tested whether phenotypic plasticity is greater in plants from a temporally heterogeneous habitat than in plants from a more homogeneous habitat. In addition, I evaluated whether the environmental heterogeneity of the original habitat influences the relationship between environmental stress and phenotypic integration, i.e., the degree of correlation among phenotypic traits. The perennial weed Convolvulus arvensis L. was used as a model species. Plants were collected in agrestal (oat field) and ruderal (wasteland) populations located in the same area of central Chile. In situ measurements during the growing season determined that the agrestal habitat was heterogeneous and the ruderal habitat homogeneous for soil moisture, but both habitats were heterogeneous for light intensity. Phenotypic plasticity to light and moisture was evaluated in a common garden, with two light level...
97 citations
TL;DR: Convolvulus arvensis L., field bindweed, is an introduced weed which occurs in the agricultural regions of all provinces of Canada with the exception of Newfoundland and Prince Edward Island.
Abstract: Convolvulus arvensis L., field bindweed, is an introduced weed which occurs in the agricultural regions of all provinces of Canada with the exception of Newfoundland and Prince Edward Island. Its twining growth habit and extensive root and rhizome system make it exceptionally difficult to control. It spreads by both seeds and root or rhizome fragments. Details of its morphology, reproductive biology, response to parasites, and methods of control are presented.
96 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2026 | 1 |
| 2025 | 12 |
| 2024 | 33 |
| 2023 | 32 |
| 2022 | 69 |
| 2021 | 24 |