volume 38 issue 1 (march 2004) : 69 - 72
HETEROSIS AND INBREEDING DEPRESSION IN LOWLAND RICE CROSSES
1Division of Crop Improvement,
Central Rice Research Institute, Cuttack - 753 006, India
Published In
Indian Journal of Agricultural Research
Article Metrics
0
Views
0
Citations
Reviewed By
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
volume 38 issue 1 (march 2004) : 69 - 72
HETEROSIS AND INBREEDING DEPRESSION IN LOWLAND RICE CROSSES
1Division of Crop Improvement,
Central Rice Research Institute, Cuttack - 753 006, India
ABSTRACT
Heterosis and inbreeding depression (10) were studied in 28 crosses involving eight dillerse parents of lowland rice for grain yield and its component traits under normal (E1) and late (E2) planting situations. Highly significant and positive heterosis for grain yield was observed in 15 and 9 crosses under E1 and E2, respectively. Among the different characters grain yield/plant recorded highest heterosis (97.0%) folloWed by biolcigical yield/plant (84.4%), no. of panicles/plant (84.0%) and no. of filled grains/panicle (81.0%) under normal planting. Similar magnitude of heterosis was observed for grain yield/plant under late planting also. In most of the crosses high heterosis for grain yield and its components was invariably accompanied by high inbreeding depression in F 2 generation. Under normal planting no, of panicles/plant exhibited highest 10 (56.8%) followed by grain yield/plant (54.5%) and biological yield/plant (52.3%). Among the different crosses four combinations viz., CN 1035–59/CN 718-8-21-10, Gayatri/Lunisree, Gayatri/Manoharsali and Lunisree/OR 1334-8 which shoWed significant positive heterosis for grain yield and some of its components under normal and late planting situations are suggested for commercial exploitation to improve grain yield in lowland rice
KEYWORDS
REFERENCES
- Anandakumar, c':n.and Sreerangasamy, S.R. (1986). Oryza., 23: 96-101.
- Grafius, J. (1959). Agron. J., 51: 551-554.
- Kempthorne, D. (i957). An Introouction to Genetic Statistics. John Wiley and Sons Inc., New York.
- Pandey, M.P. et. al (1995). fndianJ. Genet., 55: 438-445.
- Paramasivan, K.S. and Sreetangasamy, SR (1987). O!Ja'a., 24: 206-214.
- Singh, Mamta and Maurya, D.M. (1999). O!Ja'a., 36: 24-27.
- Si~gh, S.K. and Haque, M.F. (1999). fndianJ. Genet., 59: 237-238.
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.
In this Article
APC
APC cover the cost of turning a manuscript into a published manuscript through peer-review process, editorial work as well as the cost of hosting, distributing, indexing and promoting the manuscript.
Publish With US
Submit your manuscript through user friendly platform and acquire the maximum impact for your research by publishing with ARCC Journals.
Become a Reviewer/Member
Join our esteemed reviewers panel and become an editorial board member with international experts in the domain of numerous specializations.
Open Access
Filling the gap between research and communication ARCC provide Open Access of all journals which empower research community in all the ways which is accessible to all.
Products and Services
We provide prime quality of services to assist you select right product of your requirement.
Support and Policies
Finest policies are designed to ensure world class support to our authors, members and readers. Our efficient team provides best possible support for you.
Published In
Indian Journal of Agricultural Research