TRIPSACUM DACTYLOIDES (GRAMINEAE) SEEDLINGS FOR HOST-PLANT RESISTANCE TO THE WESTERN CORN-ROOTWORM (COLEOPTERA, CHRYSOMELIDAE)

被引：12

作者：

MOELLENBECK, DJ ^{[1
]}

BARRY, BD ^{[1
]}

DARRAH, LL ^{[1
]}

机构：

[1] UNIV MISSOURI,USDA ARS,PLANT GENET RES UNIT,COLUMBIA,MO 65211

来源：

JOURNAL OF ECONOMIC ENTOMOLOGY | 1995年 / 88卷 / 06期

关键词：

DIABROTICA; MAIZE; EASTERN GAMAGRASS;

D O I：

10.1093/jee/88.6.1801

中图分类号：

Q96 [昆虫学];

学科分类号：

摘要：

Mature plants and cuttings of Tripsacum dactyloides (L.) have shown resistance to western corn rootworm, Diabrotica virgifera virgifera LeConte, larvae. The purpose of our study was to evaluate seedling-stage ?: dactyloides for resistance to western corn rootworm larvae. Two evaluations were conducted using 50- to 56-d-old T. dactyloides seedlings and maize, Zea malls L., checks. In the Ist evaluation, rootworm larvae, 4, 5, and 6 wk after infestation, weighed significantly less than feeding on T. dactyloides when compared with larvae feeding on the maize checks. In the 2nd evaluation, only 3 larvae were found on a total of 20 T. dactyloides seedlings, whereas the susceptible maize controls averaged >1 larva per plant. These results indicate the presence of corn rootworm resistance in T. dactyloides seedlings that may be transferable into commercial maize.

引用

页码：1801 / 1803

页数：3