Download - Seed Concerns – Self-Pollinated Species Harold Bockelman National Small Grains Collection
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Seed Concerns – Self-Pollinated Species
Harold Bockelman
National Small Grains Collection
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The National Small Grains Collection•Predominantly self-pollinated
•More than 95% of the 128,855 accessions are self-pollinated
•Exceptions are Secale (rye), Aegilops, and some Hordeum species
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NSGC Regeneration Locations
Aberdeen, ID spring planting spring habit: barley oat wheat triticale rye
fall planting winter habit: wheat triticale rye
Parlier, CA fall planting winter habit: barley
facultative, mixed, and unknown habits
Stuttgart, AR spring planting rice (up to 130 days to maturity)
Puerto Rico winter planting rice (>130 days – daylength sensitive types)
Greenhouses winter planting wild species; critical inventory and viability
summer planting Oryza species
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NSGC Field Design
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Maintaining the Integrity of Accessions
•Heterogeneous Accessions
•Population Size
•Seed Viability
•Good descriptor data
•Field design
•Quality control at all stages
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What about a predominantly self-pollinating species that exhibits 5% outcrossing?
•Distance
•Placement
•Bagging