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In this practice, we are going to carry out some experiments on extraction and cleaning

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of seeds.

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Let's begin.

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The main task of the nursery is the production of new plants.

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This is commonly known as plant propagation.

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One of the methods we have for doing this is through sexual reproduction, which means

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propagating plants from their seeds.

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The process begins with collecting the seed, which we take from only or several parent

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plants, depending on the objective we have.

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In most cases, what we collect is the fruit, and subsequently extract the seed.

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We must collect the seed only from healthy, vigorous, and mature specimens that are growing

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in the same way or even more than those in the area where it is located.

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To carry out this practice of seed extraction and cleaning, we have proposed to experimental

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the students, one involving the pulp rem of aloe of the strawberry tree fruit, and another

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one involving the opening of legume pods, in the case of several leguminous species.

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In the first case of removing pulp from a fleshy fruit, we must first collect the seed.

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In our case, we have done this with arbutus anado, the strawberry tree, because it is

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a very abundant species in the school, and due to the uniqueness of the extraction.

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We carry out these initial tasks in a precise way, because it is essential to ensure later

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proper conservation and a successful production.

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We have collected a good quantity of ripe fruits from different strawberry tree specimens

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to ensure that we will have enough seeds later.

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The students have selected the best plants.

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The objective is to extract the seed from the fruit, remove all contaminants, and let it dry.

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Although it is very important to remove the highest percentage of contaminants possible

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to ensure better germination, by sowing only what is seed.

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In the case of strawberry trees, this task is difficult, as the seed is easily confused

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with the fruit pulp.

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The strawberry tree is a fleshy fruit, and it is high in moist.

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Its pulp has a fleshy consistency, and cleaning is done in the following phases.

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We must macerate these strawberry tree fruits in water, crush them, and mix them to separate

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the pulp from the seed.

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Maceration in water can help the subsequent germintone of the seed.

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We extract the seed throughout a cantation.

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The seed weighs more than contaminants and sinks, so we keep doing successive washes,

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removing all contaminants float in the water.

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We have performed this operation about 10 times for each batch.

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To try to remove Thagreatus number of contaminants, and keep only the seed, once extracted, we

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will let it air dry.

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We need to wait until it looses as much moisture as possible.

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If it is going to be stored, since the strawberry tree has an orthodox seed, like many other

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fleshy fruits, it can be dritto a moisture content of up to 5% and stored at low temperatures.

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In the second practice we have carried out, we have collected three different types of

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legume pods, Cercis silicoastrum, Glendytsia triacanthos, and Robinia pseudoicacea.

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They have selected the healthiest and most vigorous specimens, and collected seeds from

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various different plants.

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In the laboratory, they have opened the pods, removed the seeds, bagged the seeds, and stored

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them, and labeled them for storage.

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Once the seeds are dry, in the case of Arbutus and Ado, and directly in the case of legumes,

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we can package them, and label them with the information that helps us identify them, and

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know their origin.

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On the label, the batch number or code should be stated, indicating the date, the species,

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the number of seeds or weight, and the place of collection.

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In the case of strawberry tree seeds, in addition, we have planted them in spring, so that students

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can observe complete reproductive cycle.

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For more information, visit www.ncbi.nlm.nih.gov