author(s)
AB Bhosale and TA More

abstract

Desirable transgressive segregation was observed for ten characters in both crosses for F₂ and F₃ generations. The highest proportion of desirable transgressive segregation were observed for fruit length, node at which first female flower appeared (31.33%), followed by fruit length, yield per vine (29.33%), rind thickness (23.33%) in cross C₁ of F₂ generation whereas for fruit length (30.67%), node at which first female flower appeared (26.67%), fruit diameter (20.00%), yield per vine (17.00%) in cross C₁ of F₃ generation.

The highest transgressive segregation were found in vine length (39.00%), rind thickness (35.66%), yield per vine (22.33%), No. of seeds per fruit (18.00%), Fruit Weight (15.33%) in cross C₂ of F₂ generation whereas for vine length (32.33%), rind thickness (27.33%), No. of seeds per fruit (16.67%), yield per vine (13.00%), in C₂ of F₂ generation.

In most of the segregation of two crosses in both generation (F₂ and F₃) the yield per plant of better parent was found to be trans greed simultaneously with transgression of one or more other yield contributing character.

Thus all the characters were improved beyond capacity of their parental genotypes on the basis of high values of transgressive segregation. It was concluded that, when desired intensity (i.e. percent improvement) of a character is not available in the parent, transgressive breeding may be successfully used to extend the limit of expression of character in a particular cross combination