Effects of Plant Age and Quality on Gratiana

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Effects of Plant Age and Quality on Gratiana boliviana Performance on Tropical Soda Apple

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

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 (

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 •

METHODOLOGY………………continued • Leaf consumption - Image-Pro MC® • Insect fecundity – eggs counted • Leaf nutritional analysis - Vario Max Elemental Analyzer

Category I before after

Category I before after

Category II before after

Category II before after

Category III before after

Category III before after

Feeding performance and reproductive performance of G. boliviana

Feeding performance and reproductive performance of G. boliviana

Reproductive performance of G. boliviana

Reproductive performance of G. boliviana

Plant age and leaf age category interaction on feeding performances and reproductive performance of

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

Result of nutrient leaf analysis a a ab b

CONCLUSION • G. boliviana preferred younger plants but more so younger leaves • Nutrient

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