茨城県内におけるパラコート抵抗性ハルジオンの分布

概要

論文の詳細を見る
Resistance to paraquat of the leaves of Erigeron philadelphicus which were collected from 64 sites in 30 cities, towns and villages in Ibaraki Prefecture was surveyed after soaking leaf disks in 4×10^<-5> M paraquat solution for 20-24 hours at 25℃ at a light intensity of about 10klx. Paraquat-resistant biotypes were detected in 13 sites out of 64 and showed a comparatively uniform distribution in the areas surveyed (Fig. 2) . Paraquat-resistant biotypes were found in orchards, mulberry and tea fields, parks, shrine gardens and gardens of houses, but were not found in the periphery of orchards, mulberry and tea fields, and in upland fields and periphery, periphery of paddy fields, roadsides, bamboo groves and estate groves(Table 2). These facts indicate that the existence of resistant biotypes is closely related to the type of land use.
日本雑草学会の論文
1989-05-30