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2 Parents Usually 2-4 (6 4-10 Two to many Random, open Open pollinated in triple cross) 3 Pollination Controlled pollinated 4 General combining Tested Tested Usually not tested More Less than hybrid and Less than hybrid ability (GCA) 5 Heterosis composite 6 Seed used F1 F1 to F4 F1 to F4 7 Seed cost More Less than composite Less than hybrid and hybrid 8 Seed replacement Annual After 3-4 years After 3-4 years 9 Varietal maintenance Di cult Easy Easy 10 Re-construction Possible Possible Not possible Differences between Autopolyploid and allopolyploids Character 1) Chromosome Autopolyploid Allopolyploid Multiple of one genome.
The first is plants that are found to be insect pollinated, these include lemon balm (Melissa officinali), common rue (Ruta graveolens), meadow rue (Thalictrum aquilegifolium), hydrangea (Hydrangea arborescens), spirea (Spirea japonica), forget-me-not (Myosotis scorpioides), blue star grass (Sisyrinchium augustifolium),6 common rue (Ruta graveolens) and meadow rue (Thalictrum aquilegifolium).
Gardening for Pollinators Gosling Pollinator Gardens lph lph pollinators.
This is usually done 3-4 weeks prior to the date the target plants are ready to be pollinated.