Estimation of various types of Heterosis 1. Average heterosis | AGRI QUIZZES

Estimation of various types of Heterosis

1. Average heterosis:

It is the heterosis where F1 is superior to mid parent value. In otherwords superior to average of two parents.

F1 - MP
-------------- x 100
MP

Where F1 = Mean of hybrid
MP = Mid parental value.
I.e (P1 + P2) /2

This type of heterosis is of no use in agriculture since the superiority is below the better parent value

2. Heterobeltiosis:

Superiority of F1 over the better parent.

F1 - BP
------------- x 100
BP

Where BP = Mean of Better Parent.

3. Economic heterosis:

Superiority of the F1 compared to the high yielding commercial variety in a particular crop.

F1 - CV
--------- x 100
CV

Where CV = Mean of Commercial Variety.

4. Negative heterosis:

Performance of F1 inferior to better parent / mid parent value. - e.g. Duration.

Source

#facts

#numerical

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