International Scientific Journal on Reforestation, Afforestation and Tree Reproduction
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Douglas-fir seedling quality in biochar-amended peat substrates

Maximizing seed germination in five species of the genus Acacia (Fabaceae Mimosaceae)

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Physio-biochemical characterization of two acacia species (A. karroo Hayn and A. saligna Labill.) under saline conditions

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9

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Maximizing seed germination in five species of the genus Acacia (Fabaceae Mimosaceae)

Abdenour Kheloufi Orcid logo ,
Abdenour Kheloufi
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Faiza Zineb Boukhatem ,
Faiza Zineb Boukhatem
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Lahouaria Mounia Mansouri ,
Lahouaria Mounia Mansouri
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Mohamed Djelilate
Mohamed Djelilate
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Published: 28.06.2019.

Volume 4, Issue 1 (2019)

pp. 15-23;

https://doi.org/10.21750/refor.7.02.64

Abstract

Seeds of many tree-species possess a hard seed coat which is impervious to water. These seeds often take a long time to germinate, resulting in heterogeneity and a delay in seedlings development which is an inconvenience for reforestation success. The aim of the present work was to determine the possibilities to improve the germination of five leguminous trees of the genus Acacia that have been recorded in the arid and the desert region of Algeria using sulphuric acid. A duration of 30 min of immersion in sulphuric acid improved the seed germination up to 97.5% and 99% for A. albida and A. laeta, respectively. Increasing the time of immersion (from 30 to 90 min) improved the germination percentages for A. ehrenbergiana and A. seyal seeds to 92.5% and 93.7%, respectively. Increasing this duration to 120 min had a positive effect on A. tortilis seed germination, improving the final germination rate up to 97%. Understanding of seed Germination Requirements is very important for regeneration and successful tree establishment in forest nurseries as well as for direct plantation in arid and semi-arid lands.

Keywords

Acacia,

Germination,

Seed coat,

Sulphuric acid,

Reforestation,

Trees

References

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