IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Nectar production dynamics and sugar composition in two
Autor/es:
AGOSTINI, K.; SAZIMA, M.; GALETTO, L.
Revista:
NATURWISSENSCHAFTEN
Editorial:
SPRINGER
Referencias:
Año: 2011 vol. 98 p. 933 - 942
ISSN:
0028-1042
Resumen:
Nectar is secreted in particular rhythms throughout
the lifespan of a flower, which allows determining the
nectar production dynamics. This paper compares nectar
features in Mucuna japira and Mucuna urens describing:
dynamics of nectar production, floral response to nectar
removal, resorption, nectar sugar composition, and variation
in nectar sugar composition. M. japira inflorescence
bears 1221 yellow flowers, which are in anthesis for
7 days, whereas M. urens inflorescence bears 3654
greenish flowers, but only 13 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forMucuna japira and Mucuna urens describing:
dynamics of nectar production, floral response to nectar
removal, resorption, nectar sugar composition, and variation
in nectar sugar composition. M. japira inflorescence
bears 1221 yellow flowers, which are in anthesis for
7 days, whereas M. urens inflorescence bears 3654
greenish flowers, but only 13 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forM. japira inflorescence
bears 1221 yellow flowers, which are in anthesis for
7 days, whereas M. urens inflorescence bears 3654
greenish flowers, but only 13 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower for21 yellow flowers, which are in anthesis for
7 days, whereas M. urens inflorescence bears 3654
greenish flowers, but only 13 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forM. urens inflorescence bears 3654
greenish flowers, but only 13 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower for3 flowers are in anthesis
simultaneously that last one night. Nectar volume and sugar
concentration were measured, and the amount of sugar was
estimated. Qualitative and quantitative nectar sugar
composition was determined. Both species had a constant
nectar sugar concentration (ca. 10% for M. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forM. japira and ca.
16% for M. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forM. urens) and secreted high volumes of nectar (ca.
340 ìl per flower for M. japira and 310 ìl per flower forìl per flower for M. japira and 310 ìl per flower for
M. urens), during 5 days for M. japira and 6 h for M.
urens, but after the first removal, i.e., when flower
opening mechanism is triggered, nectar production stops
immediately. Nectar resorption occurred in both species.
Nectar sugar composition showed some similarities between
the species. Variation in nectar sugar composition
occurred in both species. The Mucuna species are
dependent on their pollinators to produce fruits and seeds,
and they have different strategies to promote the necessary
interaction with birds or bats, especially related to nectar
and flower characteristics.), during 5 days for M. japira and 6 h for M.
urens, but after the first removal, i.e., when flower
opening mechanism is triggered, nectar production stops
immediately. Nectar resorption occurred in both species.
Nectar sugar composition showed some similarities between
the species. Variation in nectar sugar composition
occurred in both species. The Mucuna species are
dependent on their pollinators to produce fruits and seeds,
and they have different strategies to promote the necessary
interaction with birds or bats, especially related to nectar
and flower characteristics., but after the first removal, i.e., when flower
opening mechanism is triggered, nectar production stops
immediately. Nectar resorption occurred in both species.
Nectar sugar composition showed some similarities between
the species. Variation in nectar sugar composition
occurred in both species. The Mucuna species are
dependent on their pollinators to produce fruits and seeds,
and they have different strategies to promote the necessary
interaction with birds or bats, especially related to nectar
and flower characteristics.Mucuna species are
dependent on their pollinators to produce fruits and seeds,
and they have different strategies to promote the necessary
interaction with birds or bats, especially related to nectar
and flower characteristics.