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TAREA 4 ACCESIBILIDAD JUAN GIL - Contenido educativo

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Subido el 18 de julio de 2023 por Juan G.

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In this practice, we are going to carry out some experiments on extraction and cleaning 00:00:00
of seeds. 00:00:26
Let's begin. 00:00:28
The main task of the nursery is the production of new plants. 00:00:30
This is commonly known as plant propagation. 00:00:35
One of the methods we have for doing this is through sexual reproduction, which means 00:00:39
propagating plants from their seeds. 00:00:45
The process begins with collecting the seed, which we take from only or several parent 00:00:50
plants, depending on the objective we have. 00:00:55
In most cases, what we collect is the fruit, and subsequently extract the seed. 00:01:00
We must collect the seed only from healthy, vigorous, and mature specimens that are growing 00:01:08
in the same way or even more than those in the area where it is located. 00:01:16
To carry out this practice of seed extraction and cleaning, we have proposed to experimental 00:01:22
the students, one involving the pulp rem of aloe of the strawberry tree fruit, and another 00:01:28
one involving the opening of legume pods, in the case of several leguminous species. 00:01:35
In the first case of removing pulp from a fleshy fruit, we must first collect the seed. 00:01:42
In our case, we have done this with arbutus anado, the strawberry tree, because it is 00:01:49
a very abundant species in the school, and due to the uniqueness of the extraction. 00:01:55
We carry out these initial tasks in a precise way, because it is essential to ensure later 00:02:01
proper conservation and a successful production. 00:02:09
We have collected a good quantity of ripe fruits from different strawberry tree specimens 00:02:15
to ensure that we will have enough seeds later. 00:02:21
The students have selected the best plants. 00:02:27
The objective is to extract the seed from the fruit, remove all contaminants, and let it dry. 00:02:32
Although it is very important to remove the highest percentage of contaminants possible 00:02:41
to ensure better germination, by sowing only what is seed. 00:02:46
In the case of strawberry trees, this task is difficult, as the seed is easily confused 00:02:52
with the fruit pulp. 00:02:57
The strawberry tree is a fleshy fruit, and it is high in moist. 00:03:02
Its pulp has a fleshy consistency, and cleaning is done in the following phases. 00:03:07
We must macerate these strawberry tree fruits in water, crush them, and mix them to separate 00:03:15
the pulp from the seed. 00:03:21
Maceration in water can help the subsequent germintone of the seed. 00:03:25
We extract the seed throughout a cantation. 00:03:34
The seed weighs more than contaminants and sinks, so we keep doing successive washes, 00:03:38
removing all contaminants float in the water. 00:03:45
We have performed this operation about 10 times for each batch. 00:03:49
To try to remove Thagreatus number of contaminants, and keep only the seed, once extracted, we 00:03:54
will let it air dry. 00:04:02
We need to wait until it looses as much moisture as possible. 00:04:04
If it is going to be stored, since the strawberry tree has an orthodox seed, like many other 00:04:09
fleshy fruits, it can be dritto a moisture content of up to 5% and stored at low temperatures. 00:04:15
In the second practice we have carried out, we have collected three different types of 00:04:29
legume pods, Cercis silicoastrum, Glendytsia triacanthos, and Robinia pseudoicacea. 00:04:33
They have selected the healthiest and most vigorous specimens, and collected seeds from 00:04:45
various different plants. 00:04:50
In the laboratory, they have opened the pods, removed the seeds, bagged the seeds, and stored 00:04:54
them, and labeled them for storage. 00:05:03
Once the seeds are dry, in the case of Arbutus and Ado, and directly in the case of legumes, 00:05:10
we can package them, and label them with the information that helps us identify them, and 00:05:18
know their origin. 00:05:23
On the label, the batch number or code should be stated, indicating the date, the species, 00:05:25
the number of seeds or weight, and the place of collection. 00:05:34
In the case of strawberry tree seeds, in addition, we have planted them in spring, so that students 00:05:39
can observe complete reproductive cycle. 00:05:45
For more information, visit www.ncbi.nlm.nih.gov 00:05:55
Subido por:
Juan G.
Licencia:
Dominio público
Visualizaciones:
5
Fecha:
18 de julio de 2023 - 20:54
Visibilidad:
Clave
Centro:
IES EL ESCORIAL
Duración:
06′ 02″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
550.95 MBytes

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