Plant–Herbivore and Plant–Pollinator Interactions of the Developing Perennial Oilseed Crop, Silphium integrifolium
| Autor: | Steven R. Larson, D. L. Van Tassel, Brent S. Hulke, Rachel E. Mallinger, Jarrad R. Prasifka |
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| Rok vydání: | 2017 |
| Předmět: |
Crops
Agricultural 0106 biological sciences Food Chain Insecta Pollination Asteraceae medicine.disease_cause 010603 evolutionary biology 01 natural sciences Silphium integrifolium Pollinator Pollen medicine Animals Herbivory Lygus Ecology Evolution Behavior and Systematics Ecology biology Kansas biology.organism_classification Miridae 010602 entomology Agronomy North Dakota Insect Science PEST analysis Tarnished plant bug |
| Zdroj: | Environmental Entomology. 46:1339-1345 |
| ISSN: | 1938-2936 0046-225X |
| Popis: | Sampling in Kansas and North Dakota documented the plant-herbivore and plant-pollinator interactions of the developing perennial oilseed crop, Silphium integrifolium Michx. The larva of the tortricid moth, Eucosma giganteana (Riley), was the most damaging floret- and seed-feeding pest in Kansas, with infested heads producing ≈85% (2015) or ≈45% (2016) fewer seeds than apparently undamaged heads. Necrosis of apical meristems caused stunting and delayed bloom in Kansas; though the source of the necrosis is not known, observations of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois; Hemiptera: Miridae), in S. integrifolium terminals suggest a possible cause. In North Dakota, E. giganteana larvae were not found, but pupae of Neotephritis finalis (Loew; Diptera: Tephritidae), a minor pest of cultivated sunflower, were common in the heads of S. integrifolium. Bees appeared highly attracted to S. integrifolium, and in all but one observation, bees were seen actively collecting pollen. The most common bees included large apids (Apis mellifera L., Svastra obliqua [Say], Melissodes spp.) and small-bodied halictids (Lasioglossum [Dialictus] spp.). Controlled pollination experiments demonstrated that S. integrifolium is pollinator dependent, due to both mechanical barriers (imperfect florets and protogyny) and genetic self-incompatibility. Subsequent greenhouse tests and AFLP confirmation of putative self-progeny show that a low ( |
| Databáze: | OpenAIRE |
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