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Production of Rare Hybrids
Hybridization is a well established plant breeding procedure to obtain superior plants by combining useful characters distributed in different plants. However, cross-pollination does not always result in the formation of viable seeds. The cross may fail due to a pre-zygotic barrier to cross ability, which prevents fertilization, or the hybrid embryo may abort due to post-zygotic incompatibility. It is now possible to overcome both types of incompatibility barriers. Hybrid embryo normally aborts on account of the failure of endosperm development or due to embryo endosperm incompatibility, in such instances it can be excised from the young seed and cultured in-vitro. This technique was first used by Laibach to raise viable interspecific hybrids in Linum. Since then embryo culture also called embryo rescue has been successfully applied to several sexually incompatible crosses (e.g., Hordeum vulgare x H. bulbosum, Lycopersicon esculentum x L. Peruvianum)
Determine the concept of imitation in the learning process The concept of imitation in the learning process is also a key developmental concept for infants and young children
If the results of an experiment turn out differently then you expected, what does that mean? A. The experiment was a failure B. You did not follow scientific method C. You should e
Mention the two regulation systems of glycogen metabolism. There is a hormonal regulation system functioning in the muscle and liver which regulates the glycogen metabolism.
extracellular signals and their characteristics
One way that the cortex has been parcellated is based on fine-grained anatomical differences in the composition of the cortical layers: their thickness and types of neurons that ar
Q. What are the tissues that form the skin in vertebrates? The skin of vertebrates is made of epidermis is an external layer of epithelial tissue and dermis a layer of connecti
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Define Extra enterocyte transfer - non haem iron absorption? Extra enterocyte transfer: Little is known about iron transport across the baso- lateral membrane. After crossing t
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