Follow
International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2019) [Effective from January 1, 2019]For more details click here

Login as a Reviewer

Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2018: 95.39
For more details click here

See Guidelines to Authors
Current Issues

Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2018.7(1): 3031-3041
DOI: https://doi.org/10.20546/ijcmas.2018.701.360


Studies on Magnitude of Genetic Variability and Estimates of Combining Ability for Yield and its Contributing Traits among Improved Lines of Castor (Ricinus communis L.)
Bindu Priya1*, M.V. Nagesh Kumar2, V. Gouri Shankar3, G. Seshu1,Anuradha1 and M. Venkata Ramana1
1Regional Agricultural Research Station, Palem-509215, PJTSAU, India
2Seed Research and Technology Centre, PJTSAU, Rajendranagar, India
3College of Agriculture, PJTSAU, Rajendranagar, India
*Corresponding author
Abstract:

Thirty castor hybrids were developed by crossing three pistillate lines with ten male parents in a line × tester mating design during rabi, 2016-17. The hybrids along parents were evaluated during kharif, 2017-18 for variability and combining ability. The analysis of variance for nine economically important characters indicated significant differences among the genotypes, implying presence of wide diversity in the material studied. High heritability (broad sense) estimates were observed for all the traits under study which showed that the variability in phenotypic expression reflects the genotypic ability to transmit the genes to their offspring. The character seed yield recorded high heritability coupled with high genetic advance as per cent of mean signifying that improvement of seed yield can be achieved by adopting simple selection procedures through which additive genes can be pyramided. Relative magnitude of general and specific combining ability variances indicated that additive genetic action was predominant in governing the traits days to maturity and 100 seed weight. Non-additive gene action was predominant for the traits days to 50 per cent flowering, number of nodes up to primary spike, plant height, primary spike length, number of spikes per plant, seed yield per plant and oil content. Four lines viz., DPC-9, PCS-124, SKI-215 and JC-12 were observed to be good combiners as indicated by their significant positive gca effects for many characters. Four hybrid combinations viz., DPC-9 x PCS-124, DPC-9 x SKI-215, DPC-9 x PCS-106 and DPC-9 x JC-12 were identified as promising based on their sca estimates and per se performance.


Keywords: Castor, Combining ability, Variability, Heritability, Selection, Crop improvement
Download this article as Download

How to cite this article:

Bindu Priya, P., M.V. Nagesh Kumar, V. Gouri Shankar, G. Seshu, G. Anuradha and Venkata Ramana, M. 2018. Studies on Magnitude of Genetic Variability and Estimates of Combining Ability for Yield and its Contributing Traits among Improved Lines of Castor (Ricinus communis L.).Int.J.Curr.Microbiol.App.Sci. 7(1): 3031-3041. doi: https://doi.org/10.20546/ijcmas.2018.701.360