Genetic variability in CMS lines of rice (Oryza sativa L.) genotypes that influence outcrossing rate percentage

¹Department of Plant Breeding and Genetics, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai -625 104, India.

ABSTRACT

Eight CMS lines were evaluated for morphological characteristics that influence outcrossing rate in hybrid rice under wetland condition. There was a marked variation in out crossing rate (OCR) of CMS lines ranging from 6% to 13 % under uniform weather conditions for all the CMS lines. Variation in plant height, number of panicle per plant and panicle length appeared to have an influence on outcrossing rate. Phenotypic acceptability, plant height (cm), days to 50% flowering, Panicles per plant, stability for pollen sterility, panicle exertion rate (PER) and out crossing rate (OCR) here assessed. Among them, IR 58025 A, IR 68888 A, IR 68897 A , TNAU CMS 2A and COMS 24 A recorded significant mean values for some characters and exploited for heterosis breeding since they possess critical outcrossing traits such as panicles per plant and panicle length. Plant height, panicle per plant and plant length, had moderate heritability with low genetic advance expected in the subsequent generation revealed role of additive gene action. The GCV and PCV somewhat varied from each other for most of the characters studied showed, there is no environmental influence on these traits. Genotypic correlation coefficient were higher than strong relation to phenotypic correlation coefficient, indicated high relation among the studied character.

KEYWORDS

REFERENCES

Abeysekera, S. W. Abeysiriwardana, D. S. and Dehideniyz, E. ( 2003 ) Characteristics associated with outcrossing rate of cytoplasmic male sterile CMS lines in rice under local conditions. Annals of the Sri Lanka Department of Agriculture 5: 1-6.
AthwaI, D.S. and Virmani, S.S. (1972) Cytoplasmic male sterility and hybrid breeding in rice. In: Rice Breeding.IRRI, Manila, Philippines, pp. 615-620.
Burton, G.W. and Devane, E.M. (1953). Genetic variability, correlation and path coefficient analysis in rice. Agron. J., 45: 478-481.
Chakraborty, S. and. Hajarika, M. H. (1972) Estimation of various genetic parameters of yield and yield components of rice. Oryza 31: 226-227.
Dhanraj, A. Jagadish, C.A. Vigay, U. (1987) Studies on character association in the F2 generation on ten selected crosses in rice (Oryza sativa L.). J Res, APAU. 15(1):64-65.
Hanson, C.H. M.H. Hazratali,M. and Julfiquar, A.W (1956). Variability studies in cytoplasmic male sterile lines (CMS) of rice (Oryza sativa L.) Agron. J., 48: 268-272.
Hasan, M.J. Ummakuisum, D. Rahman, M.H. Hazratali,M. and Julfiquar, A.W.( 2011) Genetic variability of some cytoplasmic male sterile lines (CMS) of rice (Oryza sativa L.) genotypes .Bangladesh J.Agril.Res 36 :263-270.
Kihupi, A. N. and Doto, A. L. (1989) Genotypic and environmental variability in selected rice characters. Oryza
26: 129-134.
Lin,S.C. and Yuan, L.P. (1980) Hybrid rice breeding in China. In Innovative Approaches to Rice Breeding. Int. Rice Res. Inst. Manila, Philippines. pp. 35-51.
Luat,V. Hoang,T.M. and Nguyen,V.S.(1994) Hybrid rice research in Vietnam In: Hybrid Rice Technology: New Developments and Future Prospects. Int. Rice Res. Inst., Manila, Philippines. pp. 187-193.
Maurya, D.M., Singh, S. K and Singh, R. S. ( 1986). Genetic variability in 48 low land rice cultivars of Uttar Pradesh, India. Int. Rice Res. Newsletter 11(4): 13.
Robinson, H.F. Akkaya, M.S. Bhagwat, A.A. Lavi V. and Cregan P.B. (1951). Estimation of genetic variability, heritability and genetic advance in “new plant type” tropical japonica rice under upland environment.. Agron. J., 43: 262-267.
Sharma, H.L. ( 1995) Practice of hybrid rice production technology paper submitted at the hybrid rice seed production training course. International Rice Research Institute, Philippines.
Sheeba, A. Vivekanandan.P and Ibrahim,S.M.(2006) Genetic variability for floral traits influencing out crossing in the CMS lines of rice. Indian J.Agric.Res 40(4):272-276.
Virmani,S.S.(1994) Heterosis and hybrid rice breeding. Out crossing mechanisms and hybrid seed production practices in rice. Int. Rice Res Institute, Manila, Philippines., pp 79 -96.
Virmani, S.S. Prasad M.N. and Kumar J. (1989). Breaking the yield barrier of rice through exploitation of heterosis. In: Murlidharan K, Siddiq EA, editors. New frontiers in rice research. Hyderabad (India): Directorate of Rice Research. P 76-85.
Yuan, L. P. Virmani,S.S. S iddiq, E.A. and Muralidharan, K.(1996) Hybrid rice breeding in China. Advances in hybrid rice technology. Proceedings of the 3rd International Symposium on Hybrid Rice, 14-16 November, 1996. Hyderabad, India. Manila (Philippines): International Rice Research Institutepp 27-33.
Yuan L P. (1998). Hybrid rice breeding in China. In: Virmani SS, Siddiq EA, Muralidharan K. (editors). Advances in h brid rice technology. Proceedings of the 3rd International Symposium on Hybrid Rice, 14-16 November 1996. Hyderabad, India. Manila (Philippines): International Rice Research Institute. p 27-33.

Disclaimer :

All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.

Copyright :

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Genetic variability in CMS lines of rice (Oryza sativa L.) genotypes that influence outcrossing rate percentage

ABSTRACT

KEYWORDS

REFERENCES

In this Article

APC

Publish With US

Become a Reviewer/Member

Open Access

Products and Services

Support and Policies

Editorial Board