Effects of ovule position on seed maturation and seed weight in Ulex europaeus and U. gallii (Fabaceae).

Gutierrez, David and Menendez Martinez, Maria Rosa and Obeso, Jose Ramon (1996) Effects of ovule position on seed maturation and seed weight in Ulex europaeus and U. gallii (Fabaceae). Canadian Journal of Botany, 74 (6). pp. 848-853. ISSN 0008-4026

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Abstract

We examined the effect of ovule position within the pod on the probability of seed maturation and on seed weight in two woody legumes, Ulex europaeus and Ulex gallii. Results showed that ovule position had a significant effect on the probability of seed maturation in both species. Ovules in a central position were found to have a higher probability of maturation in U. europaeus, whereas those in a stylar position were favored in U. gallii. Ulex europaeus showed no effect of position on seed weight. The smallest seed within the pod was more frequently at stylar positions in U. gallii. These results might be explained by several non-exclusive hypotheses: time of fertilization, constraints on seed development (e.g., fruit shape and access to maternal resources), and genetic quality. The effects of seed weight on progeny performance estimated as probability of germination and seedling weight were tested in a laboratory experiment. Neither U. europaeus nor U. gallii exhibited any effect of seed weight on the probability of germination. However, seedling weight was dependent on seed weight in both species.

Item Type: Journal Article
Journal or Publication Title: Canadian Journal of Botany
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/1100/1110
Subjects:
Departments: Faculty of Science and Technology > Lancaster Environment Centre
ID Code: 88651
Deposited By: ep_importer_pure
Deposited On: 13 Nov 2017 10:04
Refereed?: Yes
Published?: Published
Last Modified: 14 Aug 2019 03:01
URI: https://eprints.lancs.ac.uk/id/eprint/88651

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