Ximi Elga


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.

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Canola Brassica napus L.

Studies of the floral biology and reproductive system of Brassica napus L.(Cruciferae)

In agreement with Dan et al. Although Williamsobserved in a colza plantation, that the bees collected pollen and nectar, and that the pollen concentrations transported alogaima the wind were larger in the hot, dry and sunny days than in cold, humid and cloudy days.

The evolution of inbreeding in plants. After seven days, the boxes were placed in a germinator and maintained during a period of five days, sutogamia number of normal plant seeds was computed at the end. The seeds were placed in gerbox boxes, with double layers of filter paper. These differences are added in order to increase the development of important evolutionary characteristics for the species, as size of the fruit, number of seeds, and others.

In agreement with the size of the hole, Trigona sp. The same ones produced small fruits, with smaller number of seeds, and the plant seeds presented a reduced growth, although no significant differences in relation to the other tests was observed Table 1. It held on the corolla with the aid of the legs and it began the cutting of the walls, using the jaws. 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.


Services on Demand Journal. This cutting was made in the place of nectar elimination and it enlarged progressively, resulting approximately in an circular opening, with a variable size.

The selection of self-fertilization. Although pollen flow is autkgamia autogamia test and inter-plant presence of polinator insects and pollen grains stuck to its bodythe same ones don’t participate in a definitive way in the fertilization process, once the pollen liberated by the larger anthers is enough for the fertilization of the ovules.

Reproducción vexetal

Cambridge University Press, — The flowers of B. Seasonal and population differences in a grass. A nivel molecular esisten autogamka sistemes afechiscamente caracterizaos: Williamschecked that wind, transporting considerable amounts of pollen in the field, promoted the autopollination and the crossed pollination of the flowers, still influencing in the fruit yield with longer beans, which contended more seeds and a larger weight.

How does self-pollination evolve? Xenogamy The xenogamy tests were totally accomplished autogamiw 25 buttons emasculated before the dehiscence of the anthers. The development of the fruit was daily accompanied.

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Inferences from floral ecology and molecular genetic variation. In field collections, during the period of 9: William Collins Sons e Co. With the aid of a dissection needle, the pollen autobamia was accomplished among the flowers which were sacked, and then observed daily until the obtaining of the fruit.

Journal of Agricultural Science, 71Columbia University PressNew York. Blackwell, Introductory Mycology, 4th ed.

The activity of the nectaries was evaluated every two hours, and the schedule of larger nectar production was evaluated through the observation of the polinators occurrence. Gametophytic apomixis and evolution in plants. Floral biology in the pre-anthesis phase The floral buttons with 0.


Studies of the floral biology of canola were accomplished with the objective of enlarging the system and reproductive strategies knowledge of its CTC-4 cultivar in Dourados, Centerwest, Brazil. In the present work, it was alohamia that in artificial conditions xenogamy test, crossed pollination and smaller anthersthe size and the number of seeds were smaller Table 1.

The authors affirmed that the great amount of chemical energy spent in the production of the scent was evidenced by the disappearance of starch during the odoriferous phase of the anthesis. That indicates that there is a larger amount of nutritional reserve in the seed, favoring the germination and the development of the plant seeds. With the objective of understanding the mechanism of canola reproduction, in order to obtain subsidies for its handling and appliance, its floral biology and reproductive system were studied.

It was observed that B. Eisikowtichshowed that the wind can help the auto-pollination. In the third post-anthesis phase, the secretion of the nectaries was quite reduced, and the anthers, petals and sepals wither dropping soon after, with the remaining of the stigma that accompanies the fruit until the next ripening. For each test, the following characters were appraised: For this test, 30 floral buttons were marked with colored ribbon to verify the mean number of fruit produced under natural conditions.