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Plant Breeding

Breeding Method in Asexually Propagated Crop – Hybridization

Hybridization

Crops which are propagated asexually or by vegetative means are known as asexually propagated or vegetatively propagated or clonal crops. There are some agricultural (Sugarcane, Potato, Sweet Potato, etc) and horticultural (Banana, mango, citrus, pears, peaches, litchi, etc) crops that propagates by asexual means. The main reasons of asexual reproduction …

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Breeding Methods in Cross Pollinated Crops

Breeding Methods in Cross Pollinated Crops

Breeding Methods in Cross Pollinated Crops Breeding Methods in Cross Pollinated Crops The most important methods of breeding cross-pollinated species are (1) mass selection; (2) development of hybrid varieties; and (3) development of synthetic varieties. Since cross-pollinated species are naturally hybrid (heterozygous) for many traits and lose vigour as they …

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Breeding Methods in Self Pollinated Crops

Mass selection In mass selection, seeds are collected from (usually a few dozen to a few hundred) desirable appearing individuals in a population, and the next generation is sown from the stock of mixed seed. This procedure, sometimes referred to as phenotypic selection, is based on how each individual looks. …

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DNA Structure and Function

DNA Structure and Function

DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found …

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Genetic code

Genetic code

Genetic code, the sequence of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid(RNA) that determines the amino acid sequence of proteins. Though the linear sequence of nucleotides in DNA contains the information for protein sequences, proteins are not made directly from DNA. Instead, a messenger RNA (mRNA) molecule is synthesized from the DNA and directs the formation of the protein. RNA …

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