When the cross-pollination of two orchids occurs, and the genes of the pollinating parent are mixed with those of the pod plant, a new set of genes is created. The result is unique individuals that have not previously occurred and are ttffilidyto occur changes will take place each time crossfertilization occurs, thus making each seedling, or clone, from one capsule a "one off' with its own set of genes.
Oversterilizing will kill the seed, so take care. Immerse the seed in a solution of Milton's sterilizing fluid or a very diluted form of hydrochloric acid; this will sterilize the seed without harming the embryo inside. Unscrew each jar and spread the seed carefully on the surface of the jelly using either a pipette or a platinum loop, then close the jar immediately.
Even in the most hygienic conditions some contamination will occur at this stage. Fortunately, the orchid is generous with the amount of seed it has provided, so you can afford a 10 per cent failure rate.
In the wild, the pollination of orchids is mostly carried out by insects and occasionally hummingbird produce large quantities of blooms, all opening at the same time, to ensure successful cross-pollination within the species. Each seed capsule contains hundreds of thousands of minute seeds. It requires only a few of these to germinate for the species to be perpetuated and the cycle of life to continue. The best results for vigorous seedling growth are obtained from the cross-pollination of two separate clones, although many orchids are self-fertile, whereby the same pollen can be used on the one flower.
Without the tetraploids the great advances made in hybridizing would not have been achieved.
Its viability is checked by sowing a small amount of seed every few years. What the end result will be is difficult to predict, but it will be interesting to see if the seed is still fertile after long-term storage.
While, in the past, divisions of the best plants were sometimes available at high prices, now the very best orchids were within the reach of everyone at affordable prices. Meristemmed plants are produced by removing a small cluster of cells found at the centre, or meristem tip, of a new growth. This is achieved with the aid of a microscope.
Orchids with uneven numbers of Chromosomes will not breed. These can often be converted by treating at a very eirly stage with Colchicine, an extract iom the crocus. This will react by dunging the chromosome count in both seed- and tissue-cultured plants. This technique requires some laborawry experience in handling such very szriall amounts of plant material.
Oversterilizing will kill the seed, so take care. Immerse the seed in a solution of Milton's sterilizing fluid or a very diluted form of hydrochloric acid; this will sterilize the seed without harming the embryo inside. Unscrew each jar and spread the seed carefully on the surface of the jelly using either a pipette or a platinum loop, then close the jar immediately.
Even in the most hygienic conditions some contamination will occur at this stage. Fortunately, the orchid is generous with the amount of seed it has provided, so you can afford a 10 per cent failure rate.
In the wild, the pollination of orchids is mostly carried out by insects and occasionally hummingbird produce large quantities of blooms, all opening at the same time, to ensure successful cross-pollination within the species. Each seed capsule contains hundreds of thousands of minute seeds. It requires only a few of these to germinate for the species to be perpetuated and the cycle of life to continue. The best results for vigorous seedling growth are obtained from the cross-pollination of two separate clones, although many orchids are self-fertile, whereby the same pollen can be used on the one flower.
Without the tetraploids the great advances made in hybridizing would not have been achieved.
Its viability is checked by sowing a small amount of seed every few years. What the end result will be is difficult to predict, but it will be interesting to see if the seed is still fertile after long-term storage.
While, in the past, divisions of the best plants were sometimes available at high prices, now the very best orchids were within the reach of everyone at affordable prices. Meristemmed plants are produced by removing a small cluster of cells found at the centre, or meristem tip, of a new growth. This is achieved with the aid of a microscope.
Orchids with uneven numbers of Chromosomes will not breed. These can often be converted by treating at a very eirly stage with Colchicine, an extract iom the crocus. This will react by dunging the chromosome count in both seed- and tissue-cultured plants. This technique requires some laborawry experience in handling such very szriall amounts of plant material.
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