alogamia entre dos variedades de frijol común en Fraijanes y Alajuela, localidades del Valle Central de Costa Rica. La parcela experimental consistió en tres. compatible clones CCN51, and the self-incompatible clones TSH clones, were made studies of . autogamia facultativa (39,,9); alogamia facultativa. Rosilda Mara MussuryI* and Wedson Desidério FernandesII para realização de alogamia, como por exemplo pólen abundante, néctar e odor. de vigor inferior, quando comparadas aos testes de autogamia, polinização natural e cruzada.
|Published (Last):||19 May 2016|
|PDF File Size:||9.84 Mb|
|ePub File Size:||13.70 Mb|
|Price:||Free* [*Free Regsitration Required]|
Self-Incompatibility in Flowering Plants. Possibly, the competition for photo-assimilation is the main reason for the general position of fruits in the sub terminal area of the inflorescence, due to insufficient translocation of food for the terminal area of the inflorescence, generating the miscarrying of a great number of floral buttons and flowers. In reason of the asynchronism and intermittence during the opening of their flowers, the floral activity during one day, stays intense, promoting a constant flow of reward to the insects visitors.
This cutting was made in the place of nectar elimination and it enlarged progressively, resulting approximately in an circular opening, with a variable size. In agreement with the size of the hole, Trigona sp.
It held on the corolla with the aid of the legs and it began the cutting of the walls, using the jaws. Both the buttons were artificially pollinated, as those from where the pollen was removed, they were protected with thin fabric sacks in order to avoid the contamination with pollen of other flowers.
Pollination mechanisms, reproduction, and zutogamia breeding. The selection of self-fertilization. It was observed that B. Diversity and alogamka biology of tropical flowers Cambridge tropical biology series. Vistes Lleer Editar Editar la fonte Ver historial.
Pueden granar cuando hai mugor, inclusive n’ausencia de nutrientes. The bees reach easily the intra-floral nectaries, without needing, however, to move away the floral pieces that were open.
La autogamia ta bien espublizada ente les malecesles plantes pioneres y les especies insulares, que auhogamia que los individuos aisllaos fructifiquen y produzan granes. This fact was confirmed through the sacking of the floral button and posterior transformation in fruit. When the insects visited the flowers in search of nectar, the pollen grains were stuck to their bodies, mainly in the ventral part and they were taken to the stigma of other flowers.
The seed germination test was accomplished with five repetitions of ten seeds, except for autogamy where three repetitions were accomplished. William Collins Sons e Co.
Reproducción vexetal – Wikipedia
With slogamia aid of a dissection needle, the pollen transfer alogsmia accomplished among the flowers which were sacked, and then observed daily until the obtaining of the fruit. November 23, ; Revised: The pollen put down the stigma with high concentration of starch, which represented a primary source of energy for the polinators.
Gametophytic apomixis and evolution in plants. Blackwell, Introductory Mycology, 4th ed. Floral biology in the pre-anthesis phase The floral buttons with 0. The anthers present longitudinal dehiscence.
Les espores haploides granen formando un protonemaque ye o bien una masa de filamentos o un talloide planu. A study developed by Williamsconfirmed that colza flowers produced nectar and pollen in abundance and auutogamia were extremely attractive to the bees. Tese Mestrado Rio de Janeiro.
Embryology of Angiosperms, B. Apomixis in higher plants. Inthe studies of floral biology were accomplished in the period from July to October in stonemasons measuring 1. N’otros proyeutos Wikimedia Commons. The activity of the nectaries allogamia evaluated every two hours, and the schedule of larger nectar production was evaluated through the observation of the polinators occurrence.
Germination test The seed germination test was accomplished with five repetitions of ten seeds, except for autogamy where three repetitions were accomplished. In spite of these favorable characteristics for crop periods, few researches have been developed in Mato Grosso do Sul, although this species represents a great alternative for the State.
Studies of the floral biology and reproductive system of Brassica napus L.(Cruciferae)
Evolution above the Species Level. A detailed knowledge of biological aspects, as the floral biology and the reproductive system of Canola, are very important for a safe introduction of this species in Mato Grosso do Sul, as well as for the development of techniques adapted for the handling of this species.
Immediately after the anthesis, the flowers were pollinated. There are nectaries located in the center of the flower, two between the ovary and the short stamens and two between the long stamens and the petals Fig 1. In agreement with Williams and Eisikowtich alogzmia, the flowers of Autogamja. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.
Brassica napus is self pollinated, presenting however, many resources for the allogamy accomplishment, e.