[article]
| Titre : |
Pollen limitation of reproductive success in two sympatic alpine willows (Salicaceae) with contrasting pollination strategies |
| Type de document : |
Imprimé |
| Auteurs : |
Ørjan Totland (1968-) ; Matteo Sottocornola |
| Année de publication : |
2001 |
| Article en page(s) : |
1011-1015 |
| Langues : |
Anglais (eng) |
| Catégories : |
[CBNPMP-Thématique] Biologie de la reproduction
|
| Mots-clés : |
Salix lapponum L. |
| Résumé : |
We compared the extent of pollen limitation on female reproductive success of Salix lanata L., an entirely insect-pollinated willow, and S. lapponum L., which is 50 : 50% insect : wind pollinated (ambophilous). Supplemental hand-pollination significantly increased seed number per fruit by nearly 50% in the insect-pollinated willow, but had no significant impact on seed number in the dually pollinated species. Fruit set was not affected by the treatment in either of the species. These results demonstrate that pollen limitation on reproductive success is most pronounced in the species that depends entirely on insects for pollination. In general, pollinator visitation was highest to S. lapponum, but bumble bees were only observed on S. lanata, suggesting that the quantity and quality of pollinator visitation differed between the species. Our results empirically support the hypothesis that a dual pollination strategy is most effective in alpine environments with low and infrequent pollinator activity and high wind speeds. |
| Lien pérenne : |
DOI : 10.2307/2657082  |
| Permalink : |
https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137421 |
in American Journal of Botany > 88 (6) (2001) . - 1011-1015
Totland, Ørjan (1968-), Sottocornola, Matteo
2001
Pollen limitation of reproductive success in two sympatic alpine willows (Salicaceae) with contrasting pollination strategies.
American Journal of Botany, 88(6): 1011-1015.
|
Affiner la recherchePollen limitation of reproductive success in two sympatic alpine willows (Salicaceae) with contrasting pollination strategies in American Journal of Botany, 88 (6) (2001)
