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Huwebes, Oktubre 11, 2012
Miyerkules, Oktubre 3, 2012
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Seed Propagation
INTRODUCTION
I. METHODS OF PROPAGATION
A. SEEDS OR SEXUAL PROPAGATION
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- Strong and hardy trunk/bole
- Regularity in bearing fruits
- High yield
- Free from pests and diseases
- - excellent eating quality
- - skin that easily peels off and does not adhere to flesh
- - seeds that does not also adhere to flesh
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Healthy seedlings can be produced through proper procedures and technologies.
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- Viability test. This is done by germinating randomly sampled seeds using appropriate pre-germination treatment to determine how many will germinate.
- Seed health test.
Seed storage is a technique where seeds are kept under favorable environmental conditions to maintain seed viability. This is to keep excess viable seeds for future use when seeds are no longer available for collection.
(Refer to Annex B for moisture content determination)
- Treatment before germination
- breaking of hard seed coats
- cold water soak
- hot water soak
- alternate hot and cold water soak
- dry heat treatment
(Refer to Annex C for Seed Technology)
- Methods of sowing
- Sowing in seedboxes
- Direct sowing or sowing in seedbeds
- Preparation of potting materials
- apply chemical disinfectant (fungicide)
- pour boiling water
- Transplanting
- Seedlings from seedboxes or seedbeds
- Wildlings
- Seedlings from seedboxes or seedbeds
Instead of seeds, this method of propagating trees uses plant parts, such as stems, leaves, roots, twigs, single cells, and tissues as initial material. This is done especially in plants that do not fruit regularly (seed-off) or when earlier fruiting is desired.
(Pterocarpus indicus), Mahogany (Swietenia macrophylla), Yemane (Gmelina arborea), dipterocarp and bamboo species . Grafting, marcotting and budding are used for most fruit trees such as Pomelo (Citrus grandis), Santol (Sandoricum koetjape), and Mango (Mangifera indica).
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Grafting
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Marcotting
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Budding
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Tissue culture can produce a larger number of quality seedlings. This method however, is more expensive. |
- Sterilize young shoots using disinfectants.
Founded by Senator Loren Legarda - United Nations Environmental Program Awardee
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