Managed Bumblebees Outperform Honeybees in Increasing Peach Fruit Set in China: Different Limiting Processes with Different Pollinators
Fig 4
Pollen germination and pollen tube growth in peach flowers pollinated by A. mellifera and B. patagiatus under greenhouse conditions.
Peach flower visited by (A) B. patagiatus and (B) A. mellifera. Pollen grain germination on peach stigma of flower pollinated by (C) B. patagiatus and (D) A. mellifera. Pollen tubes (white arrowheads) growth in style of peach flower pollinated by (E) B. patagiatus and (F) A. mellifera. (G) pollen tube (white arrowhead) penetrating ovule of peach flower 7 days after pollination by B. patagiatus. (H) ovule of peach flower 7 days after pollination by A. mellifera. All scale bars = 50 μm.