Studies on Heterosis and Inbreeding Depression for Yield and Yield Related Traits in Bottle gourd (Lagenaria siceraria (Mol.) Standl.)

Author: B. Chandramouli, R.V.S.K. Reddy, Balakrishna B., M. Paratpara Rao and K. Umakrishna

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Abstract

Different fruit types preferred in different parts of India and development of these phenotypes is challenging in bottle gourd as complex inheritance pattern of fruit related characters. Hence, the present experiment in bottle gourd was conducted during kharif, 2020 at College of Horticulture, Venkataramannagudem, Dr. YSR Horticultural University, Andhra Pradesh, India. Traits, node number at which first male flower appeared, node number at which first female flower appeared, fruit diameter and vitamin-C content recorded significant and negative average and better parent heterosis. Average heterosis and heterobeltiosis in favourable direction was observed for fruit length, fruit yield/vine, fruit yield/plot, fruit yield/hectare, number of seeds per fruit and total sugar content. Economically important traits like fruit yield per vine and fruit yield per plot exhibited negative heterosis and inbreeding depression in Pusa Naveen × Pusa Santhusti. This cross can be handled through pedigree method of plant breeding for development of pureline varieties in bottle gourd.

Keywords

Bottle gourd, F2 populations, Heterosis, Inbreeding depression, Yield traits

Conclusion

The present investigation revealed that cross combinations viz., Pusa Sandesh × Arka Bahar and Pusa Naveen × Local Round are promising for increasing fruit yield and its contributing attributes. The hybrid, Pusa Sandesh × Punjab Bahar was found superior for earliness for exploitation of heterosis. Significant heterosis coupled with significant inbreeding depression was observed for most of the traits in majority of the cross combinations indicate non-additive gene action in the inheritance of these traits. Hence, methods like recurrent selection, heterosis breeding and pure line selection can be used for genetic improvement of bottle gourd.

References

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How to cite this article

B. Chandramouli, R.V.S.K. Reddy, Balakrishna B., M. Paratpara Rao and K. Umakrishna (2023). Studies on Heterosis and Inbreeding Depression for Yield and Yield Related Traits in Bottle gourd (Lagenaria siceraria (Mol.) Standl.). Biological Forum – An International Journal, 15(6): 395-398.