hi

ethods for Estimation of Heterosis

Heterosis is estimated in three different ways,

1) Mid parent heterosis

2) Better parent heterosis

3) Standard heterosis

1) Mid Parent Heterosis:

When the heterosis is estimated over the mid parent i.e. mean value or average of the two parents is known as mid parent heterosis. It is also known as average heterosis or relative heterosis and calculated by using formula.

                                          -      -

Mid Parent Heterosis = F1- MP

                                        -----------   X 100

                                             -                                         

                                           MP

            - 

Where F1 is mean of F1 and

MP is mean of two parent

2) Better Parent Heterosis:

When the heterosis is estimated over the better parent is known as better parent heterosis. It is also known as heterobeltiosis and calculated by using formula:

                                 -       -

Heterobeltiosis =   F1-   BP  

                                 --------- X 100

                                      -

             -                        BP

Where BP is mean of better parents.

The term heterobeltiosis was used by Bitzer et al (1968) to describe the improvement of heterozygote over the better parent of the cross.

3) Standard Heterosis:

It refers to the superiority of F1 over the standard commercial check variety. It is also called as economic heterosis or useful heterosis and calculated by using formula.

                                       -

Standard Heterosis = F1 – Check

                                    ------------------ X 100

                                          Check

 Heterosis leads to increase in yield, reproductive ability, adaptability, disease and insect resistance, general vigour, quality etc. For most of the characters, the desirable heterosis is positive. But for some characters like earliness, height in cereals and toxic substances are negative heterosis.

I agree with this answer

Thanks, but I need free software for calculation of heterosis, so as to make the work faster

I strongly agreed with the answer of Noor Edan Jarad . But kindly recommend any software for calculation of heterosis.

https://www.rdocumentation.org/packages/agricolae/versions/1.3-1/topics/heterosis

Hi AKINYOSOYE Solomon Tayo

Have you been able to obtain a software for the estimation of heterosis?

I have data I would like to estimation of heterosis on base {Standard heterosis (commercial)}

No. But I have been taught the manual method, which has been proven effective and reliable. I can help you to analyze your data based on agreement.

Thanks