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The Scientific World Journal
Volume 2013 (2013), Article ID 935981, 6 pages
http://dx.doi.org/10.1155/2013/935981
Research Article

Combining Ability for Germination Traits in Jatropha curcas L.

1Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
2Department of Mechanical and Material Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia
3Faculty of Plantation and Agrotechnology, Universiti Technology Mara (UiTM), 40450 Shah Alam, Selangor, Malaysia

Received 26 June 2013; Accepted 4 September 2013

Academic Editors: D. W. Archer, O. K. Douro Kpindou, and T. Nakazaki

Copyright © 2013 A. K. M. Aminul Islam et al. 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.

Abstract

Six parents of Jatropha curcas were crossed in half diallel fashion, and the s were evaluated to determine the combining ability for nine germination parameters. The ratio between general combining ability (GCA) and specific combining ability (SCA) variances indicated preponderance of additive gene action for all the characters except germination percentage, time of 50% germination, seedling length, and seedling vigor index. The parents and were the best general combiner for most of the characters studied. The cross was the best specific combiner for speed of emergence, germination percentage, germination energy, germination index, and seedling vigor index, the cross for mean germination time, time of 50% germination, and seedling length, and the cross for number of days to first germination. The germination percentage varied from 58.06 to 92.76% among the parents and 53.43 to 98.96% among the hybrids. The highest germination (98.96%) was observed in hybrid , and none of the hybrids or parents showed 100% germination. The highest germination index (GI) and seedling vigor index (SVI) were found in hybrid and , respectively. The results of this study provide clue for the improvement of Jatropha variety through breeding program.