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Titre du document / Document title

Pollen tube growth and fertilization after different in vitro pollination techniques of Aechmea fasciata

Auteur(s) / Author(s)

VERVAEKE I. (1) ; PARTON E. (1) ; MAENE L. (1) ; DEROOSE R. (1) ; DE PROFT M. P. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Department of Applied Plant Sciences, Laboratory of Plant Culture, Catholic University of Leuven, W. De Croylaan 42, 3001 Heverlee, BELGIQUE

Résumé / Abstract

The effect of cut style and placental pollination on fertilization efficiency was studied for compatible Aechmea fasciata plants. These alternative in vitro pollination techniques resulted in lower penetration rates of the ovules by pollen tubes in comparison to pollination on the stigma. An explanation was found in the intervention of the normal pollination process, through which less pollen-pistil interactions were built up. After cut style pollination the percentage of ovule penetration by pollen tubes increased when a longer style part was left at the ovary. Probably fewer factors that control pollen tube growth are present in the lower style part. Pollen germinated on the ovules after placental pollination but only rarely penetration of the micropyle by a pollen tube occurred. Activation of the ovary, induced by in vivo prepollination for 6 hours, and pollination two days after anthesis did not increase the fertilization percentage. Grafting a style with active growing pollen tubes to ovules on the placenta (placental grafted style pollination) resulted in a higher fertilization percentage. Pollen tube growth through the style was essential for pollen tube guidance to the ovules and penetration of the micropyle.

Revue / Journal Title

Euphytica    ISSN  0014-2336   CODEN EUPHAA 

Source / Source

2002, vol. 124, no1, pp. 75-83 (30 ref.)

Langue / Language

Anglais

Editeur / Publisher

Springer, Dordrecht, PAYS-BAS  (1952) (Revue)

Mots-clés anglais / English Keywords

Flower

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Bromeliaceae

;

Ornamental crop

;

Floral biology

;

Style (pistil)

;

Micropyle

;

Treatment efficiency

;

Ovule

;

Penetration

;

Application method

;

Pollination

;

In vitro

;

Fecundation

;

Pollen

;

Pollen tube

;

Growth

;

Mots-clés français / French Keywords

Fleur

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Bromeliaceae

;

Plante ornementale

;

Biologie florale

;

Style pistil

;

Aechmea fasciata

;

Micropyle

;

Efficacité traitement

;

Ovule végétal

;

Pénétration

;

Modalité traitement

;

Pollinisation

;

In vitro

;

Fécondation

;

Pollen

;

Tube pollinique

;

Croissance

;

Mots-clés espagnols / Spanish Keywords

Flor

;

Spermatophyta

;

Angiospermae

;

Monocotyledones

;

Bromeliaceae

;

Planta ornamental

;

Biología floral

;

Micropilo

;

Eficacia tratamiento

;

Ovulo vegetal

;

Penetración

;

Modalidad tratamiento

;

Polinización

;

In vitro

;

Fecundación

;

Polen

;

Tubo polínico

;

Crecimiento

;

Localisation / Location

INIST-CNRS, Cote INIST : 8245, 35400010141795.0110

Nº notice refdoc (ud4) : 13687366



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