Morphological characteristics and methods for breaking seed dormancy in Enterolobium contorsiliquum specimens from the Amazonian biome

Moura E. G., . and da Silva J. A., . and da Silva R. F., . and Gil R. L., . and de Sousa P. S., . and Andrade F. R., . and Nardis B. O., . Morphological characteristics and methods for breaking seed dormancy in Enterolobium contorsiliquum specimens from the Amazonian biome. pp. 160-172. ISSN 0128-1283

Characterisation and reproduction studies of Amazonian species are extremely important for the recovery and preservation of this biome. The objective of this study was to morphologically characterise the fruits and seeds of Enterolobium contortisiliquum as well as to verify the influence of seed mass and methods for breaking dormancy. Two evaluation periods consisting of 100 fruits and 500 seeds were analysed for morphological parameters. An experimental design of a complete randomised 2 3 3 factorial scheme was used to assess the effect of time in storage mass and breaking dormancy. The important factors consisted of two periods (one and five months after seed collection) three classes of seed mass ( 0.877 g 0.887“1.09 g and 1.09 g) and two methods for breaking dormancy (sulphuric acid and mechanical scarification control group) were identified. The evaluated parameters were germination germination speed index stem diameter average germination time radicle length seedling height and the fresh and dry weights of root shoot and total biomass. Mechanical scarification and sulphuric acid immersion promoted breaking dormancy in seeds of E. contortisiliquum while the medium and large seeds showed better initial development. Mechanical scarification is recommended for breaking the seed dormancy of this species.

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Abstract

Characterisation and reproduction studies of Amazonian species are extremely important for the recovery and preservation of this biome. The objective of this study was to morphologically characterise the fruits and seeds of Enterolobium contortisiliquum as well as to verify the influence of seed mass and methods for breaking dormancy. Two evaluation periods consisting of 100 fruits and 500 seeds were analysed for morphological parameters. An experimental design of a complete randomised 2 3 3 factorial scheme was used to assess the effect of time in storage mass and breaking dormancy. The important factors consisted of two periods (one and five months after seed collection) three classes of seed mass ( 0.877 g 0.887“1.09 g and 1.09 g) and two methods for breaking dormancy (sulphuric acid and mechanical scarification control group) were identified. The evaluated parameters were germination germination speed index stem diameter average germination time radicle length seedling height and the fresh and dry weights of root shoot and total biomass. Mechanical scarification and sulphuric acid immersion promoted breaking dormancy in seeds of E. contortisiliquum while the medium and large seeds showed better initial development. Mechanical scarification is recommended for breaking the seed dormancy of this species.

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Item Type:	Article
AGROVOC Term:	Enterolobium
AGROVOC Term:	Seed
AGROVOC Term:	Fruits
AGROVOC Term:	morphology
AGROVOC Term:	Statistical analysis
AGROVOC Term:	Experimental design
AGROVOC Term:	Seed germination
AGROVOC Term:	Seed storage
AGROVOC Term:	Seed dormancy
AGROVOC Term:	Land conservation
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9831

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