| [allelopathy of different plants on wheat, cucumber and radish seedlings]. | by means of bioassay in laboratory and field, this paper studied the allelopathy of 18 kinds of plants in gansu province on the seedlings of wheat, cucumber and radish. the results showed that the aqueous extract of the stems and leaves of artemisia annua, solanum nigrum and datura stramonium had the strongest allelopathy on test receptor plants, and their synthetic inhibitory effect (se) was 47.66%, 32.89% and 26.63%, respectively. the se of xanthium sibiricum, portulaca oleraca, cephalanoplos ... | 2005 | 16011179 |
| systematics and biology of some species of micrurapteryx spuler (lepidoptera, gracillariidae) from the holarctic region, with re-description of m. caraganella (hering) from siberia. | during a dna barcoding campaign of leaf-mining insects from siberia, a genetically divergent lineage of a gracillariid belonging to the genus micrurapteryx was discovered, whose larvae developed on caragana fabr. and medicago l. (fabaceae). specimens from siberia showed similar external morphology to the palearctic micrurapteryx gradatella and the nearctic parectopa occulta but differed in male genitalia, dna barcodes, and nuclear genes histone h3 and 28s. members of this lineage are re-describe ... | 2016 | 27110203 |