Reference Report for IND85057067
| Title: | Ovipositional sites of the potato leafhopper (Homoptera: Cicadellidae) on vegetative stage soybean plants. |
| Authors: | Simmons, A.M., Godfrey, L.D., Yeargan, K.V. |
| Source: | Environ. Entomol. 1985, 14(2):165-169 |
| Abstract: | Oviposition site selection of the typhlocybid Empoasca fabae was studied on 5 early vegetative growth stages of soyabeans variety Essex. In a greenhouse study, plants were exposed to females of E. fabae for 24 h, whereas a natural population was allowed to oviposit on the plants in a field study. After oviposition, plants were divided into predetermined morphological parts, and eggs were counted utilizing a staining technique. The results from the greenhouse study indicated that oviposition in the stems predominates in stages VC and V1 and contrasts with primarily leaf oviposition in stages V2, V3 and V4. The total number of eggs per plant generally was greater in older than in younger plants. Among the stem sections, that portion between the cotyledon and unifoliolates was preferred for oviposition. Among the leaf parts, the petioles and midribs were preferred for oviposition with the petiolules and other veins less preferred. Within a growth stage, whether leaf or stem tissue, the newest (i.e., apical) part was preferred over older tissue. |
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