Mango is one of the popular fruits in the world due to its attractive color, delicious taste and excellent nutritional properties. Known for its sweet fragrance and flavor, the mango has delighted the senses for more than 4000 years. A celebrated fruit, mango, now produced in most of the tropical parts of the globe.

Sunday, February 7, 2010

Inheritance pattern

Inheritance pattern
The mango is not a convenient plant for genetical analysis due to its long life cycle, cross pollination and high degree of heterozygocity, lack of detail information on its inheritance pattern, intricate arrangement of sexes in the panicle and excessive fruit drop.

However the inheritance of some characteristics has been worked out which are readily analyzed.

Some of the more desired characters like upright tree habit is dominant over spreading and spreading is dominant over dwarfness.

There exists a strong linkage between bearing and fruit quality. Biennial bearing is dominant over regular bearing.

Precocity and regularity of bearing are governed by recessive genes.

Fruit bearing in bunches gas been observed to be dominant over single fruit bearing.

The genetics of fruit color has not been studied in detail but available combinations resulting in different colors.

The inheritance of duration of the juvenile period is yet to be examined critically. Totapari Red Small has been found to have a very short juvenile phase and thus it can be used as a male parent in hybridization programme to reduce the length of the juvenile phase.

This is because no effect of the female parent has been found on the distribution of the juvenile period or fertility.

Resistance to floral malformation is controlled by recessive gens. Spongy tissue, a physiological disorder of fruits has also been found to be governed by recessive genes.

Susceptibly to bacteria canker is transmitted through cytoplasmic inheritance.
Inheritance pattern
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