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levando a planta à alogamia. Em plantas alógamas, é desejável que um grande número de grãos de pólen (GP) sejam hábeis à fertilização, pois cada um leva. alogamia entre dos variedades de frijol común en Fraijanes y Alajuela todas las plantas de PAN 68 en las cinco hileras próximas al bloque central. ALOGAMIA.- Cruzamiento natural en las plantas, que origina la formación de las poblaciones heterocigóticas y panmícticas debido a la polinización al azar.

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Sexual Plant Reproduction, v. Biological Journal of the Linnean Society On the contrary, while G. One result of autogamy is that pollination limitation may be reduced depending on the degree to which the pollen of a single fower can fertilize all potential ovules or absent and the evolution of self-fertilization under these conditions might follow the Reproductive Assurance Hypothesis of Hagerup and Jain but see Eckert et al.

Contrasting breeding systems, foral displays, and fruit sets reported in this narrow-scaled study certainly encourage further investigations concerning reproductive wlogamia in orchids of southern South America.

Soybean gene flow in the Western Region of Paraná

Gavilea araucana A and G. Flowering and fruiting occur from November to January in G. Self-compatibility and heterosis in white clover Trifolium repens L. Self-incompatibility systems in angiosperms.

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Only the breeding system of G. Delayed selfng, which occurs without the need of pollinator service, should confer the greatest advantage for reproductive assurance in species like G. Inferences from floral ecology and molecular genetic variation. Genetic control of specificty and activity of the S antigen in plants.

Reprodución das plantas – Wikipedia, a enciclopedia libre

Each aoogamia species was assessed independently. Characterization and breakdown of self-incompatibility in field bindweed Convolvulus arvensis L. Reproductive biology aspects of two species of the genus Gavilea Orchidaceae, Chloraeinae in populations from Central Chile. Incompatibility and incongruity in wild and cultivated plants.

Transgenic crop in natural habitats. Iowa State University, All analyses were performed using the Statistica software package v.

The dynamics of fowering and fruit production in two eastern North American terretrial orchids, Tipularia discolor and Liparis lilifolia. Theoretical and Applied Geneticsv. We considered a fruit when the ovary was distinctively swollen prior to seed dispersal period.

Arquivado dende o orixinal o 13 de maio de In fact, fruiting success attained by G. Bud autogamy in some northern orchids. International Journal of Plant Science Floral display, assessed as the total number of fowers per individual plant, was estimated by inconspicuously tagging plants at the vegetative stage and counting the total number of fowers produced by such plants at the end of the fowering season.

Self- and cross-fertilization in plants. Pollination of Geoblasta pennicillata Orchidaceae by Campsomeris bistrimacula Hymenoptera, Scoliidae. American Society of Agronomy, Hereditas, v 52, p. Crop Sciencev. Noutras palabras, a autogamia nestas especies coexiste coa alogamia nun equilibrio adaptativo. We evaluated the putative breeding system, foral display, and natural pollination in two Southern Cone of South American orchids, Gavilea araucana and G.

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Reprodución das plantas

The degree of dependency of plants on pollinators for outcross pollen transportation is a key issue in plant reproductive ecology because it may constrain the evolutionary trajectories of plants and their pollinators. Pollination biology of the Chilean endemic orchid Chloraea lamellata.

Academia Mexicana de Ciencias. Relationships between foral plaantas, in terms of fower number per plant, and female reproductive success of Gavilea araucana and G. Canadian Journal of Plant Sciencev. Proceedings of the Royal Society of London Bv. Visualization of the Brassica self-incompatibility S-locus on identified oilseed rape chromosomes.

The Journal of Heredity, v.

Reproductive assurance and plantad evolution of uniparental reproduction in fowering plants. Molecular analysis of genetic relatedness among alfalfa clones differing in levels of self-incompatibility. Certainly, determining whether this trait contribute to an increase in reproductive success in other reproductive seasons would clarify the adaptive value of this feature.

We thank Javier A.