Growing Seed Crops Russell T Nagata College of

Growing Seed Crops Russell T. Nagata College of Tropical Agri. and Human Resources Komohana Research and Education Center Hilo, Hawaii russelln@hawaii. edu Hawai’i Public Seed Initiative Seed Saving and Production Basics

Reasons for Self Seed Production Ø Ø Ø Heirloom Varieties Cheaper? Sustainability/Independence Change Variety Makeup Opportunity Hawai’i Public Seed Initiative Seed Saving and Production Basics

What to Save From? Ø Ø Ø Heirlooms Self Pollinated Crops Annuals Open Pollinated Varieties No Hybrids Unless… Hawai’i Public Seed Initiative Seed Saving and Production Basics

Maintaining Genetic Diversity Ø How Many Plants to Keep Ø Mating Biology Ø Genetic Drift Ø Available Space Ø More Plants or More Seeds Ø Seed Yield Ratio Ø Seed Quantity Needed Hawai’i Public Seed Initiative Seed Saving and Production Basics

Maintaining Genetic Diversity Ø How Many Plants to Keep Ø Plant Selection Ø Reason For Selection Ø Eliminated Undesirables Ø Move in New Direction Ø New Possibility Hawai’i Public Seed Initiative Seed Saving and Production Basics

Maintaining Genetic Diversity Ø How Many Plants to Keep Ø Plant Selection Ø Population Makeup Ø Population Uniformity Ø Narrow Genetic Base Ø Open Pollinated Hawai’i Public Seed Initiative Seed Saving and Production Basics

Maintaining Genetic Diversity Ø Ø How Many Plants to Keep Plant Selection Population Makeup Pollination Biology Ø mating behavior Ø pollen transfer Hawai’i Public Seed Initiative Seed Saving and Production Basics

Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Dependent on Starting Material Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Dependent on Starting Material Ø Selection and Rouging Procedures Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Dependent on Starting Material Ø Selection and Rouging Procedures Ø Cleanliness Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Ø Dependent on Starting Material Selection and Rouging Procedures Cleanliness Proper Labeling – Seed to Seed Ø Variety Name Ø Common or Scientific Name Ø Date Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Ø Ø Dependent on Starting Material Selection and Rouging Procedures Cleanliness Proper Labeling – Seed to Seed Saving Goals and Objectives Hawai’i Public Seed Initiative Seed Saving and Production Basics

Seed Purity Ø Ø Ø Dependent on Starting Material Selection and Rouging Procedures Cleanliness Proper Labeling – Seed to Seed Saving Goals and Objectives Pollen Flow Control Ø Start to Finish Hawai’i Public Seed Initiative Seed Saving and Production Basics

Isolation Distances Ø Crop Specific Ø Pollination Biology Ø Self Pollination Ø Cleistogamy Ø Wind Pollinated Ø Insect Pollinated Ø Animal Pollinated Hawai’i Public Seed Initiative Seed Saving and Production Basics

Isolation Distances Ø Crop Specific Ø Location Specific Ø In Geographic Space Ø In Time Ø Exclusion of Pollinators Hawai’i Public Seed Initiative Seed Saving and Production Basics

Hawai’i Public Seed Initiative Seed Saving and Production Basics