Effects of Plant Age and Quality on Gratiana
- Slides: 17
Effects of Plant Age and Quality on Gratiana boliviana Performance on Tropical Soda Apple by Divina Amalin Jined Lamata Luis Bradshaw Amy Roda Catharine Mannion
OBJECTIVES • to evaluate the feeding and reproductive performance of G. boliviana on different ages of TSA plant • to determine the plant quality in different ages of TSA plant and its relation to G. boliviana performance
METHODOLOGY • • • Plant ages (2, 3, 3+ month old) Leaf categories ( young, middle, old) Plant in bugdorm 10 adults (5 ♀: 5 ♂) 3 replications Data gathered (leaf consumption, # eggs laid, leaf nutrient)
METHODOLOGY………………continued • Leaf consumption - Image-Pro MC® • Insect fecundity – eggs counted • Leaf nutritional analysis - Vario Max Elemental Analyzer
Category I before after
Category II before after
Category III before after
Feeding performance and reproductive performance of G. boliviana
Reproductive performance of G. boliviana
Plant age and leaf age category interaction on feeding performances and reproductive performance of G. boliviana A B I II III Leaf Category
Result of nutrient leaf analysis a a ab b
CONCLUSION • G. boliviana preferred younger plants but more so younger leaves • Nutrient level in different ages of TSA plant and age of the leaves seems to have an effect on the insect preference
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