Breeding by seed
Breeding sexually (by seed) is practiced, especially in most annual and biennial plants and perennial plants sometimes, especially in crop selection to obtain new varieties, due to the possibilities of cross-pollinated plants, which easily crosses and the cross-fertilized, such as Zinnia, Tagetes Viola, Phlox, Petunia, etc., which is necessary for maintaining soil purity isolation seed plants.
Drawback of this system is that breeding is not always quite accurately convey the characters of a given variety. The great advantage is to get from one plant a lot of seeds. In addition, seeds occupy a small area for storage during the winter, while keeping care affordable and long life maintenance of germination.
The flowers produce seeds to obtain high quality plants must be selected locations suitable rainfall during maturation and harvest, good sunny and medium soils recover. Also, provision of seeds of species and varieties are made of authentic cultures made ??on separate lots, suitable land, well crafted and maintained, applying the necessary treatments against various pathogens, fertilization time, depending on the stage of development of plant.
Besides the above mentioned works, all in order to obtain quality seed, the plant is necessary to retain a small number of flower buds reducing unnecessary or even certain branches bearing flowers to make the central stem pinching and so on, because fruits and seeds are well fed. Soil grown plants that do not comply will be removed during the vegetation period.
In the case of plants grown in greenhouses, where pollination can not be normal because insects are lacking, recourse to artificial pollination as appropriate to: Calceolaria, Cyclamen, Begonia, Sinning, Primula etc. or a number of plants whose reproductive organs defects (Freesia, Petunia hybrida superbissima and others).
Pollination is done in beautiful sunny days, warm and drier, and in greenhouses, it is drier atmosphere, because pollen germinate well at higher temperatures and where there is moisture. Best time for pollination is morning at around 9. Plants are suitable for this task when stigma and pollen reached maturity, and the pistil is usually seen sticky liquid. Application of pollen on the stigma of flowers is done by dabbing with pollen from anthers open directly (from plants of the family Liliaceae and Amaryllidaceae) or with a brush or cotton swab to soften after the pollen is applied to the stigma or pollen shaking thumbnail and then touching the stigma so great. For successful pollination is good to repeat this operation several times.
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