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Published yearly: 

4 Issues


ISSN: 2320-964X (Online) 

ISSN: 2320-7817  (Print)



Dr. Santosh Pawar 




Int. Journal of Life Sciences, 2016; 4(4):517- 528   |    Available online, February 01, 2017

Heterosis and gene action studies involving aromatic lines for grain quality traits in rice



Gonya Nayak P, Sreedhar M, Surender Raju Ch, and Vanisree S


Department of Genetics and Plant Breeding, College of Agriculture, Acharya N.G. Ranga Agriculture University, Rajendranagar, Hyderabad.


Received: 23.11.2016   |      Accepted: 29.12.2016       |         Published : 01.02.2017

Sixteen crosses developed from four aromatic lines and four non scented testers were evaluated for various grain quality traits to assess the heterosis of the crosses and to identify best combinations. The estimates of heterosis, heterobeltiosis and standard heterosis were variable among the crosses. Heterosis in desirable direction was recorded for  important quality attributes viz., head rice recovery ( 22.16%), kernel length (10.28%), L/B ratio (12.84%), kernel elongation ratio (14.17%),  volume expansion ratio (22.10%), aroma (35.21%), alkali spreading value (45.32) and Protein (19.95). Some of these heterotic crosses have turned out to be best specific crosses and exhibited desirable per se. Among the heterotic crosses Yamini/MTU1010(Milling Recovery), Pusa1121/BM-71(Kernel Length), Ranbir Basmati/BM71(Kernel Breadth, L/B ratio), Pusa 1121/MTU1081(Kernel Length after Cooking), RNR2354/BM71(Kernel Elongation Ratio), Yamini/Sye632003(Aroma, Alkali spreading value) and Pusa1121/BM71(Protein) were found to be superior, expressing heterosis, heterobeltiosis and standard heterosis in desirable direction. Quality attributes viz., milling recovery, head rice recovery, kernel length after cooking, kernel breadth after cooking,  kernel elongation ratio and aroma exhibit non-additive gene action. The results of the present study indicated the potential of these parental lines in the improvement of grain  quality of rice hybrids.   


Key words: Heterosis , Kernel Length,  L/B ratio, Aroma, Protein



Editor: Dr. Arvind Chavhan


Cite this article as:

Gonya Nayak P, Sreedhar M, Surender Raju Ch, and Vanisree S (2016) Heterosis and gene action studies involving aromatic lines for grain quality traits in rice, International J. of Life Sciences, 4 (4): 517-528.




Authors are thankful to prof. K.K. Sharma former dean of science and Head department of zoology for his guidance and encouragement during this research.


Conflicts of interest: The authors stated that no conflicts of interest.



Copyright: © 2016 | Author(s), This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial - No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.


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