We evaluated ten poplar clones （G-3, G-48, L-50/88, L- 154/84, L-156/89, S7C8, S7C15 WSL-22, WSL-29 and Uday） for ovi- positional preference and larval performance of Clostera restitura. Fe- male moths did not show ...We evaluated ten poplar clones （G-3, G-48, L-50/88, L- 154/84, L-156/89, S7C8, S7C15 WSL-22, WSL-29 and Uday） for ovi- positional preference and larval performance of Clostera restitura. Fe- male moths did not show any preference with respect to clones for ovi- position. Significant differences were observed for number of eggs laid on different plant parts. C. restitura laid eggs in clusters, preferably on upper surface of leaf and size of the egg cluster varied from 15 to 167 eggs. Clones varied for their relative resistance and susceptibility to C. restitura. L-50/88; L-156/89 were identified as most resistant clone based on minimum leaf consumption, whereas S7C15 was found to be most susceptible clone to C. restitura. In multiple choice experiments, no feeding preference by C. restitura larvae was detected amongst different poplar clones. After initial settlement of larvae on a particular clone, the larvae remained confined to that clone and negligible inter-clonal move- ment was noticed subsequently. The fresh pupal weight was correlated negatively （r = -0.37） with percentage surface leaf area eaten and positively （r = 0.47） with length of larval period, measured on different clones. Relationship between percentage leaf area eaten and length of larval period was negative （r = -0.23）. Owing to relative resistance of L- 50/88 and L-156/89 against C. restitura, these clones can be recom- mended for plantation in defoliator prone areas in north-western India.展开更多
文摘We evaluated ten poplar clones （G-3, G-48, L-50/88, L- 154/84, L-156/89, S7C8, S7C15 WSL-22, WSL-29 and Uday） for ovi- positional preference and larval performance of Clostera restitura. Fe- male moths did not show any preference with respect to clones for ovi- position. Significant differences were observed for number of eggs laid on different plant parts. C. restitura laid eggs in clusters, preferably on upper surface of leaf and size of the egg cluster varied from 15 to 167 eggs. Clones varied for their relative resistance and susceptibility to C. restitura. L-50/88; L-156/89 were identified as most resistant clone based on minimum leaf consumption, whereas S7C15 was found to be most susceptible clone to C. restitura. In multiple choice experiments, no feeding preference by C. restitura larvae was detected amongst different poplar clones. After initial settlement of larvae on a particular clone, the larvae remained confined to that clone and negligible inter-clonal move- ment was noticed subsequently. The fresh pupal weight was correlated negatively （r = -0.37） with percentage surface leaf area eaten and positively （r = 0.47） with length of larval period, measured on different clones. Relationship between percentage leaf area eaten and length of larval period was negative （r = -0.23）. Owing to relative resistance of L- 50/88 and L-156/89 against C. restitura, these clones can be recom- mended for plantation in defoliator prone areas in north-western India.
