Dewinging dipterocarp seeds


Citation

Marzalina M., . and Wan Tarmeze W. A., . and Staines H., . Dewinging dipterocarp seeds. pp. 377-383. ISSN 0128-1283

Abstract

When mass flowering season occurs every three to eight years in the tropics seeds ofmany forest species tend to mature at about the same time. They include the majority ofdipterocarp seeds that are winged and classified as recalcitrant. In order to secure as many planting materials as possible harvested seeds must be planted immediately. Previous studies indicated thatdewinging facilitates seed germination and is advantageous when sowing space is limited. Usually seed dewinging is processed manually which is labourintensive. time consumingbutcnticalinretainingthe qualityofrecalcitrantseeds. An experiment was carried out to reduce processing time using a prototype machine namely seed dewinger machine produced by the Forest Research Institute Malaysia. Mechanical dewinging of four dipterocarp species significantly reduced the processing time without affecting seed viability. The process ofdewinging was longer for seeds with greater wing length smaller wing waist and which were heavier. The best-fit model for the duration of processing was determined as time 0.65548 0.0297 (length) -0.379 (waist) 0.134 (weight).


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Abstract

When mass flowering season occurs every three to eight years in the tropics seeds ofmany forest species tend to mature at about the same time. They include the majority ofdipterocarp seeds that are winged and classified as recalcitrant. In order to secure as many planting materials as possible harvested seeds must be planted immediately. Previous studies indicated thatdewinging facilitates seed germination and is advantageous when sowing space is limited. Usually seed dewinging is processed manually which is labourintensive. time consumingbutcnticalinretainingthe qualityofrecalcitrantseeds. An experiment was carried out to reduce processing time using a prototype machine namely seed dewinger machine produced by the Forest Research Institute Malaysia. Mechanical dewinging of four dipterocarp species significantly reduced the processing time without affecting seed viability. The process ofdewinging was longer for seeds with greater wing length smaller wing waist and which were heavier. The best-fit model for the duration of processing was determined as time 0.65548 0.0297 (length) -0.379 (waist) 0.134 (weight).

Additional Metadata

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Item Type: Article
AGROVOC Term: Flowering
AGROVOC Term: Dipterocarps
AGROVOC Term: Seeds
AGROVOC Term: Tropics
AGROVOC Term: Forest range
AGROVOC Term: Seed harvesters
AGROVOC Term: Seed quality
AGROVOC Term: Seed germination
AGROVOC Term: Seed moisture content
AGROVOC Term: Germination
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:27
URI: http://webagris.upm.edu.my/id/eprint/22207

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