دورية أكاديمية
The interplay between ovule number, pollination and resources as determinants of seed set in a modular plant
| العنوان: | The interplay between ovule number, pollination and resources as determinants of seed set in a modular plant |
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| المؤلفون: | Marina M. Strelin, Marcelo A. Aizen |
| المصدر: | PeerJ, Vol 6, p e5384 (2018) |
| بيانات النشر: | PeerJ Inc. |
| سنة النشر: | 2018 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | Limits to plant reproduction, Ovule number, Physiological modularity, Pollination, Raspberry, Resources, Medicine, Biology (General), QH301-705.5 |
| الوصف: | Background A classical dichotomous perspective proposes that either pollination or plant resources limit seed production. However, ovule number could also be limiting when pollination results in complete ovule fertilization and there are more plant resources available than needed to develop seeds. Moreover, this dichotomous view assumes that all flowers of a plant have equal access to a shared pool of resources, although these are frequently compartmentalized within plant modules, for example, inflorescences. How ovule number, pollination and resources affect seed production in physiologically-compartmentalized rather than physiologically-integrated plants has yet to be explored. We used raspberry (Rubus idaeus) to address this question. Methods We first assessed if ovule number affected the fraction of ovules that develop into seed (i.e., seed set) and whether this effect related to the extent of physiological integration among flowers within plants. This was achieved by statistically testing predictions on the sign and level of plant organization (i.e., among flowers within inflorescences, among inflorescences within ramets, and among ramets) of the relation between ovule number and seed set given different degrees of physiological integration. We then explored whether the relation between ovule number and seed set was affected by plant age (used here as a surrogate of resource availability) and pollination intensity (open-pollination vs. exclusion). Results Within inflorescences, flowers with more ovules set a larger fraction of seeds. On the other hand, seed set at the inflorescence level was negatively related to the average number of ovules per flower. Seed set increased with ovule number and open-pollination, and decreased with ramet age. However, ovule number explained more variation in seed set than ramet age and pollination treatment. Ramet age affected the strength of the relation of seed set to ovule number, which was stronger in old than young ramets. Pollination did not alter the strength of this ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2167-8359 |
| العلاقة: | https://peerj.com/articles/5384.pdfTest; https://peerj.com/articles/5384Test/; https://doaj.org/toc/2167-8359Test; https://doaj.org/article/935633ba5e864656917799763d6e3250Test |
| DOI: | 10.7717/peerj.5384 |
| الإتاحة: | https://doi.org/10.7717/peerj.5384Test https://doaj.org/article/935633ba5e864656917799763d6e3250Test |
| رقم الانضمام: | edsbas.47BCB746 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 21678359 |
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| DOI: | 10.7717/peerj.5384 |