ISSN : 2320-7051

  • No. 772, Basant Vihar, Kota

    Rajasthan-324009 India

  • Call Us On

    +91 9784677044


International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (1488) Last page : (1493)
Article doi: :

Inferences on Magnitude and Nature of Gene Effects for Morpho-Physiological Traits in Rice [Oryza Sativa L.]

R. R. Makwana1*, V. P. Patel2, M. M. Pandya3 and B. A. Chaudhari1
1Dept. of Genetics & Plant Breeding, N.A.U., Navsari-396 450
2Associate Research Scientist, Regional Rice Research Station, N.A.U., Vyara-396 450
3Assistant Research Scientist, Hill Millet Research Station, A.A.U., Muvaliya Farm, Dahod-389 151
*Corresponding Author E-mail:
Received: 25.08.2017 | Revised: 28.09.2017 | Accepted: 6.10.2017  



The gene effects for grain yield and its components including grain yield and its contributing characters were studied using parental, F1, F2, BC1 and BC2 generations in four crosses of rice. The estimates of gene effects in cross I (GURJARI x IR-28) showed that additive, dominance and all interactions (additive x additive, additive x dominance and dominance x dominance) were important for inheritance of grain breadth; additive and additive x dominance for plant height, additive, dominance, and additive x additive for 100 seed weight, grain yield per plant and chlorophyll content at flowering stage; gene effects dominance and epistatic (additive x additive and dominance x dominance) for harvest index and chlorophyll content at panicle initiation stage; and additive, dominance, additive x additive and additive x dominance for photosynthetic rate at panicle initiation stage were found significant and important for inheritance. Additive-dominance model was found inadequate in cross II (NAUR-1 x DANTESHWARI) for all the characters. Inadequate estimates of additive-dominance model were recorded in cross IV (GAR-13 x PUSA SUGANDHA-5) for all the characters. In general, both additive and non-additive gene action were important for the expression of almost all characters studied. Biparental mating, recurrent selection and diallel selective mating system could be used to obtain desirable recombination like early plants with higher yield.

Key words: Gene action, Gene effects, Morpho-Physisological traits, rice.

Full Text : PDF; Journal doi :

Cite this article: Makwana, R. R., Patel, V. P., Pandya, M. M. and Chaudhari, B.A., Inferences on Magnitude and Nature of Gene Effects for Morpho-Physiological Traits in Rice [Oryza Sativa L.], Int. J. Pure App. Biosci.6(2): 1488-1493 (2018). doi: