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Scanning Electron Microscopic (Sem) Studies On Range Grasses And Their Resistance To Black Grass Bugs, Yun-Hwa Ling
Scanning Electron Microscopic (Sem) Studies On Range Grasses And Their Resistance To Black Grass Bugs, Yun-Hwa Ling
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Large populations of black grass bugs, Labops hesperius Uhler, have been observed on extensive acreages of range lands. These bugs cause severe damage to the range grasses, lowering their palatability and productivity. This study was to determine whether morphological differences among breeding lines of grass species or interspecific hybrids could be correlated with the feeding behavior of black grass bugs. If so, plant breeders should be able to develop resistant cultivars. To explore this possibility, cultivars and synthetics of range grasses, representing the genera, Agropyron, Dactylis, Phalaris and Poa, were exposed to different instar stages (II and …