WordNet
- North American annual with small white flowers widely naturalized as a weed in South America and Europe (同)Veronica peregrina
- a plant of the family Portulacaceae having fleshy succulent obovate leaves often grown as a potherb or salad herb; a weed in some areas
PrepTutorEJDIC
- スベリヒユ(サラダなどに入れて食べる雑草)
English Journal
- Host Suitability of 32 Common Weeds to Meloidogyne hapla in Organic Soils of Southwestern Quebec.
- Bélair G, Benoit DL.AbstractThirty-two weeds commonly found in the organic soils of southwestern Quebec were evaluated for host suitability to a local isolate of the northern root-knot nematode Meloidogyne hapla under greenhouse conditions. Galls were observed on the roots of 21 species. Sixteen of the 21 had a reproduction factor (Pf/Pi = final number of M. hapla eggs and juveniles per initial number of M. hapla juveniles per pot) higher than carrot (Pf/Pi = 0.37), the major host crop in this agricultural area. Tomato cv. Rutgers was also included as a susceptible host and had the highest Pf/Pi value of 13.7. Bidens cernua, B. frondosa, B. vulgata, Erysimum cheiranthoides, Eupatorium maculatum, Matricaria matricarioides, Polygonum scabrum, Thalictrum pubescens, Veronica agrestis, and Sium suave are new host records for M. hapla. Bidens cernua, B. frondosa, B. wulgata, D. carota, M. matricarioides, Pasticana sativa, P. scabrum, S. suave, and Thlaspi arvense sustained moderate to high galling by M. hapla and supported high M. hapla production (12.4 </= Pf/Pi >/= 2.9). Capsella bursa-pastoris, Chrysanthemum leucanthemum, Gnaphalium uliginosum, Stellaria media, and Veronica agrestis sustained moderate galling and supported moderate M. hapla reproduction (2.8 </= Pf/Pi >/= 0.5). Chenopodium album, C. glaucum, E. cheiranthoides, P. convolvulus, Portulaca oleracea, and Rorippa islandica supported low reproduction (0.25 </= Pf/Pi >/= 0.02) and sustained low galling. Galling was observed on Senecio vulgaris but no eggs or juveniles; thus, S. vulgaris may be useful as a trap plant. Eupatorium maculatum, and T. pubescens harbored no distinct galling but supported low to moderate M. hapla reproduction, respectively. Amaranthus retroflexus, Ambrosia artemisiifolia, Echinochloa crusgalli, Erigeron canadensis, Oenothera parviflora, Panicum capillare, Setaria glauca, S. viridis, and Solidago canadensis were nonhosts. Our results demonstrate the importance of adequate weed control in an integrated program for the management of M. hapla in organic soil.
- Journal of nematology.J Nematol.1996 Dec;28(4S):643-7.
- Thirty-two weeds commonly found in the organic soils of southwestern Quebec were evaluated for host suitability to a local isolate of the northern root-knot nematode Meloidogyne hapla under greenhouse conditions. Galls were observed on the roots of 21 species. Sixteen of the 21 had a reproduction fa
- PMID 19277189
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- Thesaurus Antonyms Related Words Synonyms Legend: Noun 1. purslane speedwell - North American annual with small white flowers widely naturalized as a weed in South America and Europe Veronica peregrina speedwell, veronica - any plant of the genus Veronica
- Purslane Speedwell is a winter annual with ascending branched stems radiating from the base of the plant. Its reproduction is by seed. ... (Veronica peregrina) Purslane Speedwell, also known as Neckweed, is a winter annual broadleaf weed.