Seed Protocol

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Seed protocol Marie-Pierre L. Gauthier, May 14, 2014 Harvesting: • Wait until the capsules are dry but not opened yet. • Put one capsule per 1.5ml eppendorf tube with the tag number in the tube. • Store at room temperature. (I left my samples in my desk drawer.) Getting the seeds: • Carefully remove the brittle husk from the capsule • Make sure no seeds are attached to the husk inspecting the debris under the dissecting scope. • Put a round filter paper in the cover of a petris dish (it should fit perfectly) • Wet the paper with diH2O • Put the seed capsule on the wet paper. • Using small forceps split the capsule open in two half by gently pressing on the capsule seam. • Put two halves seeds side down on the paper and wait 5 min for them to get wet. • With the forceps, under the dissecting scope scrape the seeds out of the capsule onto the paper. • Under the scope remove all plant debris leaving only the seeds on the wet filter. • Using a squirt bottle use some water to spread the seeds around the paper filter. • Cover the petri dish with the bottom half left (the final product will be and upside down petris dish) Counting the seeds: • Put the closed petris dish on the colony counter. • With a sharpie count the seeds by marking on the lid of the dish. Germination: • Put the petris dishes in the growth chamber for a week • Water every day as needed Germination count: • Open the petris dish and remove excess of water with kim wipes. • Put the opened petris dish on the colony counter • Using a sharpie on the filter paper count the seedlings. Seeds count proxy: • Carefully remove the husk from the capsule. • Carefully remove the peduncle from the capsule. • Using a micro scale weigh the capsule. • A range of small to big capsule should have their seed manually counted to build the standard curve. • Example of results: Capsules weight vs total seed number 0.05 0.045 0.04 R² = 0.8495 0.035 0.03 0.025 0.02 0.015 Capsule Weight (g) Weight Capsule 0.01 0.005 0 0 50 100 150 200 250 300 350 400 Total number of seeds .

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