Maternal plant responses to high pollen loads
2007 (English)In: International journal of plant sciences, ISSN 1058-5893, Vol. 168, no 7, 1013-1019 p.Article in journal (Refereed) Published
Maternal plant responses to different levels of pollination vary and are of importance for the total fitness of the plant. We studied how varying pollen load affects late flowering, reproduction, and growth of maternal plants. Raphanus raphanistrum, Sinapis arvensis, and Brassica napus were used as study species. We conducted hand‐pollination experiments with different pollen loads for early flowers in the inflorescence and measured responses on vegetative traits, floral traits of late flowers, and seed production. There were no effects on vegetative traits, but floral traits were affected by treatments in two of the study species. The high pollen load treatment in S. arvensis resulted in longer petals on late flowers compared with the low pollen load treatment. In R. raphanistrum, the high pollen load treatment resulted in a higher number of flowers, with narrower petals, than the low pollen load treatment. Total seed production was similar in both treatments in all species. Our results suggest that plants that received a high pollen load were able to allocate resources to high seed production of early flowers and to increased pollen dispersal of late flowers, thereby achieving higher total fitness than plants that received a lower pollen load.
Place, publisher, year, edition, pages
2007. Vol. 168, no 7, 1013-1019 p.
pollination, pollen load, maternal plant responses, resource allocation, Brassicaceae.
IdentifiersURN: urn:nbn:se:su:diva-24165DOI: 10.1086/518869ISI: 000249073400004OAI: oai:DiVA.org:su-24165DiVA: diva2:196912
Part of urn:nbn:se:su:diva-67092007-03-082007-03-022012-12-10Bibliographically approved