Browsing by Author "ARCE, P"

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    FINE-STRUCTURE OF ACTINORHIZA OF THE RHAMNACEAE GROWING IN CHILE .1. TALGUENEA-QUINQUENERVIA (GILL-ET-HOOK)
    (1988) BALBOA, O; AVILA, G; ARCE, P
    Root nodules Talguenea quinquenervia Gill et Hook (Rhamnaceae) are restricted to the middle region of the root cortex. The root endophyte possesses hyphae which are septate and vesicles. The vesicles are spherical and are continuous with that of the hyphae. The endophyte fine structure is similar to other Frankia-induced root nodules.
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    SEASONALITY IN ROOTING OF PROSOPIS-CHILENSIS CUTTINGS AND INVITRO MICROPROPAGATION
    (1991) ARCE, P; BALBOA, O
    Seasonality in rooting of cuttings and its relationship with some environmental conditions and growth parameters of Prosopis chilensis (Mol. Stunz) were studied. It was observed that rooting could be induced in cuttings taken from field collections only during the dry season, the period corresponding to the highest vegetative growth and reproductive activity (September to March); however, percentages did not exceed 15%. The rooting response does not occur during the dormant period (May to September). When using cuttings from clonal material growing in the glasshouse, rootings exceeding 80% were obtained in liquid aerated media.