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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (1000) Last page : (1009)
Article doi: http://dx.doi.org/10.18782/2320-7051.5154

Heterosis studies for yield and yield related traits over seasons in boro rice

Kumari Priyanka* and H. K. Jaiswal
Department of Genetics and Plant Breeding, Institute of Agricultural Sciences,
Banaras Hindu University, Varanasi – 221 005, Uttar Pradesh (India)
*Corresponding Author E-mail: kpriyanka.choudhary@gmail.com
Received: 6.07.2017  |  Revised: 11.08.2017   |  Accepted: 14.08.2017  


Thirty six crosses generated in diallel fashion from nine boro rice parental lines were evaluated to study the heterosis for yield and various yield related traits in rice (Oryza sativa L.) over three seasons i.e. Boro-2014, Kharif-2015 and Boro-2015. The findings suggested that the magnitude of heterosis differed from trait to trait and cross to cross over seasons. For yield per plant, standard heterosis ranged from -57.07% (HUR 36 x MTU 1010) to 34.60% (Jaya x Gautam) in boro-2014, -50.05% (HUR 36 x Gautam) to 39.66% (Krishna Hamsa x Gautam) in boro-2015 and -30.57% (IR 8 x IR 36) to 30.82% (IR 64 x Jaya) in kharif-2015. Jaya x Krishna Hamsa showed consistently significant standard heterosis over the three seasons i.e. 24.47% in boro-2014, 24.14% in boro-2015 and 28.50% in kharif-2015. Theses crosses may further be tested on larger scale for commercial exploitation.

Key words: Boro rice, Heterobeltiosis, Standard heterosis, Yield.

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

Cite this article: Priyanka, K. and Jaiswal H. K., Heterosis studies for yield and yield related traits over seasons in boro rice, Int. J. Pure App. Biosci.5(6): 1000-1009 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5154