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Reproductive biology of Anthyllis vulneraria subsp. vulgaris (Fabaceae) in northwestern Iberian Peninsula / Luis Navarro (1999)
Titre : Reproductive biology of Anthyllis vulneraria subsp. vulgaris (Fabaceae) in northwestern Iberian Peninsula Type de document : Tiré à part de revue Auteurs : Luis Navarro Année de publication : 1999 Importance : 281-288 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Stratégie de production de semences (fécondité)
[CBNPMP-Thèmes] Système de reproductionMots-clés : Anthyllis vulneraria L. ssp. vulgaris (Koch) Corb. Résumé : In spite of being widely distributed throughout Europe, populations of Anthyllis vulneraria are very isolated genetically. As a consequence of processes of independent evolution, some isolated populations have developed characteristics that separate them from the rest. The scope of this study was to investigate whether or not this isolation has affected the reproductive biology. The reproductive biology of an isolated population of A. vulneraria subsp. vulgaris (Koch) Willk. in northwest Spain was studied, and compared with French populations. In the studied population, insect pollination was necessary for fruit production. Autogamy was precluded by protandry, although geitonogamous pollen transfer might occur. Supplementary pollination did not lead to any increase in fruit-set level, seed-pod weight or seed weight. Mean pollen/ovule ratio (3080) was within the normal range for xenogamous taxa. The first open flowers in capitula lived more than twice as long as later flowers did. During the floral life-span, corolla colour gradually changed from white to partially pink to pink and the nectar production rate appeared to differ between colour stages. Fruit set level in the studied population differed between the four years of study. The breeding system found in this Spanish population differs from French populations. I suggest that classification of this taxon in northwest Iberian Peninsula should be reconsidered, taking into account its breeding system. Lien pérenne : DOI : 10.1111/j.1756-1051.1999.tb01113.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130315 Navarro, L. 1999. Reproductive biology of Anthyllis vulneraria subsp. vulgaris (Fabaceae) in northwestern Iberian Peninsula. Nordic journal of botany, 19(3) : 281-288.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 8430 Navarro L. Tiré à part Centre de documentation Tirés à part Consultable Fruit-set and seed weight variation in Anthyllis vulneraria subsp. vulgaris (Fabaceae) / Luis Navarro (1996)
Titre : Fruit-set and seed weight variation in Anthyllis vulneraria subsp. vulgaris (Fabaceae) Type de document : Tiré à part de revue Auteurs : Luis Navarro Année de publication : 1996 Importance : 139-148 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Stratégie de production de semences (fécondité) Mots-clés : Anthyllis vulneraria L. ssp. vulgaris (Koch) Corb. Résumé : Fruit-set and seed weight variation was studied in a population ofAnthyllis vulneraria subsp.vulgaris (Fabaceae) in northwestern Spain. The plants produce several shoots, each bearing two to four inflorescences that open one at a time from bottom to top. Fruit-set, seed-pod weight and seed weight were found to be significantly higher in proximal inflorescences than in distal inflorescences of the same shoot; mean seed weight was up to three times higher in proximal than in distal inflorescences. By contrast, none of the three variables varied significantly among plants or among shoots of the same plant. Similarly, none of the three variables differed significantly between early- and late-flowering plants, or between plants monitored in 1993 and in 1994. These results are compatible with the view that shoots function as semiautonomous units as regards resource allocation, and that within the shoot resources are preferentially allocated to proximal (= early-opening) inflorescences. In the plants studied, the ratio of seed-pod weight to seed weight was fairly constant, suggesting that the pod is important for seed success. Lien pérenne : DOI : 10.1007/BF00989057 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130316 Navarro, L. 1996. Fruit-set and seed weight variation in Anthyllis vulneraria subsp. vulgaris (Fabaceae). Plant systematics and evolution, 201 : 139-148.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 8431 Navarro L. Tiré à part Centre de documentation Tirés à part Consultable