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CIFOR-ICRAF s’attaque aux défis et aux opportunités locales tout en apportant des solutions aux problèmes mondiaux concernant les forêts, les paysages, les populations et la planète.

Nous fournissons des preuves et des solutions concrètes pour transformer l’utilisation des terres et la production alimentaire : conserver et restaurer les écosystèmes, répondre aux crises mondiales du climat, de la malnutrition, de la biodiversité et de la désertification. En bref, nous améliorons la vie des populations.

CIFOR–ICRAF publishes over 750 publications every year on agroforestry, forests and climate change, landscape restoration, rights, forest policy and much more – in multiple languages.

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Germination of woodland mahogany (Trichilia emetica) following manual seed coat scarification and potassium nitrate treatments

Exporter la citation

. Experiments were carried out in the laboratory and nursery to study the effect of manual seed coat scarification and soaking in potassium nitrate (KNO3) on the germination of seeds of woodland mahogany (Trichilia emetica). Seeds without treatment attained a total germination of 28 % in the laboratory and 33 % in the nursery. Seeds with complete removal of aril alone or complete removal of aril associated with partial removal of seed coat at the radicular end without soaking in KNO 3 gave 88/99 % germination in the laboratory and 77/93 % in the nursery. Trends in germination value were similar to cumulative germination percentages. Germination times were shortest (13 days) in seeds where aril removal was associated with partial removal of the seed coat and longest (31 days) in unscarified seeds. Application of KNO 3 produced a slight adverse effect of germination. The main cause of poor germination was due to the impermeability of the aril to water. It is recommended that aril alone should be completely removed before sowing seeds of T. emetica.
    Année de publication

    1993

    Auteurs

    Msanga H P; Magembe J A

    Langue

    English

    Mots clés

    scarification, germination, multipurpose trees

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