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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2020, Volume : 8, Issue : 4
First page : (522) Last page : (534)
Article doi: : http://dx.doi.org/10.18782/2582-2845.8271

Gene Action Study for Fruit Yield and Its Components in Bottle Gourd [Lagenaria siceraria (Mol.) Standl.] Through Genration Mean Analysis

Odedara Geeta* N. , Patel, J. B. and Odedara Manisha N.
Department of Genetics and Plant Breeding, College of Agriculture, Junagadh Gricultural University, Junagadh – 362 001, Gujarat, India
*Corresponding Author E-mail: odedarageeta33@gmail.com
Received: 5.07.2020  |  Revised: 13.08.2020   |  Accepted: 19.08.2020 

 ABSTRACT

In the present investigation, nature and magnitude of gene action was analyzed in six generations (P1, P2, F1, F2, BC1 and BC2) of two crosses [Pusa Naveen × DBG 6 (cross 1) and DBG 5 × DBG 6 (cross 2)] of bottle gourd. On the basis of individual scaling tests, additive-dominance model was adequate in cross Pusa Naveen x DBG 6 for number of node bearing first female flower; in cross Pusa Naveen x DBG 6 for number of fruits per plant; and in cross DBG 5 x DBG 6 for fruit yield per plant. For the remaining character-cross combinations, additive-dominance model was found inadequate for description of variation in generation means. The (h) and (l) components had opposite sign in all the crosses for all characters except fruit equatorial diameter in DBG 5 x DBG 6 and for fruit yield per plant Pusa Naveen x DBG 6. Thus, these cross presuming largely complementary type of epistasis. Remaining crosses for all traits presuming largely duplicate type of epistasis. It would be concluded from the present study that fruit yield per plant and its component traits studied in two bottle gourd crosses were governed by additive, dominance, digenic, epistasis and digenic epistasis gene effects along with duplicate type of gene action. When additive as well as non-additive gene effects are involved, a breeding scheme efficient in exploiting both types of gene effects should be employed. Bi-parental mating could be followed which would facilitate exploitation of both types of gene effects simultaneously for genetic improvement of fruit yield and its component traits in bottle gourd.

Keywords: Additive, Bottle gourd, Dominance, Epistasis, Generation mean analysis.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Geeta, O.N., Patel, J. B., & Manisha O.N. (2020). Gene Action Study for Fruit Yield and Its Components in Bottle Gourd [Lagenaria siceraria (Mol.) Standl.] Through Genration Mean Analysis, Ind. J. Pure App. Biosci. 8(4), 522-534. doi: http://dx.doi.org/10.18782/2582-2845.8271