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Lisa Evans

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    Lisa Evans Lisa Evans Presentation Transcript

    • The New Zealand Institute for Plant & Food Research Limited Avocado – Fruit set Mark Goodwin, Lisa Evans and Heather McBrydie
    • Aim: To see if we can determine which flowers will set fruit. The New Zealand Institute for Plant & Food Research Limited
    • Introduction: • Morphology • Pollinators • Fruit set • Summary The New Zealand Institute for Plant & Food Research Limited
    • Female phase Male phase The New Zealand Institute for Plant & Food Research Limited
    • The New Zealand Institute for Plant & Food Research Limited
    • Morning - Female Day 1 Morning – Male Closed Afternoon – Female Day 2 Morning - Male The New Zealand Institute for Plant & Food Research Limited
    • Morning - Female Day 1 Morning – Male Closed Afternoon – Female Day 2 Afternoon - Male The New Zealand Institute for Plant & Food Research Limited
    • Afternoon - Female Day 1 Morning – Female Closed Afternoon – Male Day 2 Morning - Male
    • The New Zealand Institute for Plant & Food Research Limited
    • The New Zealand Institute for Plant & Food Research Limited
    • The New Zealand Institute for Plant & Food Research Limited
    • Determinate vs. indeterminate Treatment No. of No. of flowers No. of fruit Average % trees (19/02/09) fruit set Determinate Indeterminate The New Zealand Institute for Plant & Food Research Limited
    • Determinate vs. indeterminate Treatment No. of No. of flowers No. of fruit Average % trees (19/02/09) fruit set Determinate 20 Indeterminate 20 The New Zealand Institute for Plant & Food Research Limited
    • Determinate vs. indeterminate Treatment No. of No. of flowers No. of fruit Average % trees (19/02/09) fruit set Determinate 20 29865 Indeterminate 20 23793 The New Zealand Institute for Plant & Food Research Limited
    • Determinate vs. indeterminate Treatment No. of No. of flowers No. of fruit Average % trees (19/02/09) fruit set Determinate 20 29865 56 Indeterminate 20 23793 40 The New Zealand Institute for Plant & Food Research Limited
    • Determinate vs. indeterminate Treatment No. of No. of flowers No. of fruit Average % trees (19/02/09) fruit set Determinate 20 29865 56 0.18 Indeterminate 20 23793 40 0.24 The New Zealand Institute for Plant & Food Research Limited
    • 0.7 0.6 0.5 Percent fruit set 0.4 0.3 0.2 0.1 0.0 2 4 6 8 10 12 14 16 18 20 Inflorescence The New Zealand Institute for Plant & Food Research Limited
    • Inflorescence removal Treatment No. of trees No. of fruit (19/02/09) Average % set Tip 20 Base 20 Control 20 The New Zealand Institute for Plant & Food Research Limited
    • Inflorescence removal Treatment No. of trees No. of fruit (19/02/09) Average % set Tip 20 Base 20 Control 20 The New Zealand Institute for Plant & Food Research Limited
    • Inflorescence removal Treatment No. of trees No. of fruit (19/02/09) Average % set Tip 20 32 0.398 Base 20 7 0.087 Control 20 35 0.225 The New Zealand Institute for Plant & Food Research Limited
    • Hand pollination Treatment No. of No. of No. of No. of Average trees replicates flowers fruit % fruit set (19/02/09) Determinate 11 14 277 Indeterminate 11 14 287 The New Zealand Institute for Plant & Food Research Limited
    • Hand pollination Treatment No. of No. of No. of No. of Average trees replicates flowers fruit % fruit set (19/02/09) Determinate 11 14 277 16 5.7 Indeterminate 11 14 287 13 4.6 The New Zealand Institute for Plant & Food Research Limited
    • 8 6 Percent fruit set 4 2 0 0 1 2 3 Control Hand pollinated The New Zealand Institute for Plant & Food Research Limited
    • Summary • No determinate/indeterminate effect • Base tip effect 5X • Pollen added effect 30x • Suggests pollination limiting The New Zealand Institute for Plant & Food Research Limited
    • Conclusion We can increase fruit set by adding pollen The New Zealand Institute for Plant & Food Research Limited
    • Next season Repeat last season Distribution of fruit on trees relative to pollinizers Repeat pollinations - 5 Flowers per inflorescence Check hand pollinations Possibly look at bee movements The New Zealand Institute for Plant & Food Research Limited
    • The New Zealand Institute for Plant & Food Research Limited www.plantandfood.com mark.goodwin@plantandfood.co.nz