PLANT BREEDING AND PROPAGATION ASSESSMENT- BIO 100 SELF ASSESSMENT PDF

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This is a self-assessment on plant breeding and propagation. This tackles micropropagation, advantages of different plant propagation such as sexual and asexual propagation....

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ISRAELEE PRAISE T ESLABON PLANT BREEDING AND PROPAGATION ASSESSMENT

A2A56-BIOLOGY

1. Describe the advantages and disadvantages of micro propagation (practice of rapidly multiplying stock plant material to produce many progeny plants using modern plant tissue culture methods) compared with making cuttings in a greenhouse. Compared with making cuttings in a greenhouse as a method for plant propagation that has advantages and disadvantages, micro propagation is the same thing. Here are the list of advantages and disadvantages of micro propagation: ADV ADVAN AN ANTAG TAG TAGE ES:  It takes shorter time to grow new plantlets.  Only a small amount of initial plant tissue is required.  The new plantlets and plants are more likely to be free of viruses and diseases.  The process is not dependant on the seasons and can be done throughout the year.  You need only a relatively small space to perform the process (ten times the plants in one-tenth of the space).  This process helps to supply the consumer market with new subspecies and variety. DISA DISADV DV DVAN AN ANTAG TAG TAGE ES:    

Tissue Culture can require more labour and cost more money. There is a chance that the propagated plants will be less resilient to diseases due to the type of environment they are grown in. Failure to pick up any abnormalities before culturing could lead to the new plants being infected. Success with the tissue culture is not a guarantee. There is still a chance that the process triggers a secondary metabolic chemical reaction, and the new explants or cells' growth gets stunted, or even die off.

2. What might be some advantages of having several varieties of fruits (such as apple and plum) on the same tree? Here are some of the advantages of growing multiple fruits in the same tree:  It is perfect for small gardens to save land space  It produces more fruit varieties in a single tree.  It shortens the time taken for first production of flowers or fruits by the scion, in some cases by many years.  It dwarf the scion, making both its height and shape more convenient for harvesting fruit, as with apples;

ISRAELEE PRAISE T ESLABON PLANT BREEDING AND PROPAGATION ASSESSMENT  

A2A56-BIOLOGY

It allows scion cultivars to retain their desirable leaf, floral, or fruit characters, without the risk of these being lost through sexual reproduction; and It provides the most economic use of scion material, in cases where there is some difficulty with stem cuttings producing roots.

3. Describe advantages and disadvantages of producing a crop potato plants using asexual (tuber) rather than sexual (true seed propagation). Adv Advant ant antages ages o off as asex ex exual ual rrepr epr eproduc oduc oductio tio tion n in pot potaato plant plants: s:  The main advantage of asexual method of reproduction is that the new potato plants contain the genetic material of the same parent, so they are essentially clones of the parent potato plant. This means that, once you have a potato plant with desirable traits, you can reproduce the same traits indefinitely, as long as the growing conditions remain similar.  Asexual reproduction of potato plants is especially important for commercial growers who want to reproduce the highest-quality potatoes at the same time ensuring consistency of a variety of potatoes for sale.  This can also help to maintain consistent quality and taste in products made from these potatoes.  With asexual reproduction, potato plants also bypass the immature seedling phase and therefore reach the mature phase sooner. This can save a lot of time and money for commercial potato plant production. Disadv Disadvanta anta antages ges o off sexu sexual al re reproduct product production ion in po potat tat tato o plant plants: s:  Offspring produced are genetically different to the parents. This genotypic variation is of little value to growers because a new potato plant could be totally different to the mother plant, thus not following uniformity.  Growing potato plants from seed would take even longer time in contrast to asexual reproduction.  The offspring is frail as the seedlings produced by sexual reproduction in other plants.  A potato plant cannot clone many copies of itself rapidly thus fewer produce.  Seeds produced by sexual reproduction can disperse to new locations and wait for favourable growing condition while asexual reproduction is not dependent on seasons....