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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (1477) Last page : (1482)
Article doi: : http://dx.doi.org/10.18782/2320-7051.6247

Heterosis and Inbreeding Depression for Morpho-Physiological Traits in Rice [Oryza sativa L.]

R. R. Makwana¹*, V. P. Patel², M. M. Pandya¹ and B. A. Chaudhary^1
1Dept. of Genetics & Plant Breeding1, N.A.U., Navsari-396  450
²Associate Research Scientist2, Regional Rice Research Station, N.A.U., Vyara-396 450
*Corresponding Author E-mail: mrakesh034@gmail.com
Received: 12.02.2018  |  Revised: 26.03.2018   |  Accepted: 2.04.2018  

 ABSTRACT

Highly significant and positive heterosis over mid parent and better parent was recorded for grain yield per plant and its related traits in crosses viz., GURJARI x IR-28, NAUR-1 x DANTESHWARI and GAR-13 x RP BIO- 226. Crosses which depicted significant and positive heterosis for grains yield per plant also exhibited significant and positive heterosis for its components traits like grains per panicle, panicle length and test weight, which indicated that heterotic effect for grain yield per plant was mainly due to manifestation of heterosis in yield components. The crosses which exhibited heterosis for grain yield per plant, yield contributing traits and physiological traits also depicted significant inbreeding depression which revealed association between heterotic effects and inbreeding depression.

Key words: Heterosis, Inbreeding depression, Rice

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

Cite this article: Makwana, R.R., Patel, V.P., Pandya, M.M. and Chaudhary, B.A., Heterosis and Inbreeding Depression for Morpho-Physiological Traits in Rice [Oryza sativa L.], Int. J. Pure App. Biosci.6(2): 1477-1482 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6247