Effect of Gamma Irradiation on Morpho-Agronomic Characteristics of Groundnut (<i>Arachis hypogaea</i> L.)
- 1 Department of Genetics and Plant Breeding, Regional Nuclear Energy Centre, Kinshasa, DR-Congo;Faculty of Agronomy, Uni- versity of Kinshasa, Kinshasa, DR-Congo
- 2 Department of Genetics and Plant Breeding, Regional Nuclear Energy Centre, Kinshasa, DR-Congo; Faculty of Agronomy, Uni- versity of Kin-shasa, Kinshasa, DR-Congo
- 3 Department of Biological Sciences, Laurentian University, Sudbury, Canada
- 4 Faculty of Agronomy, Uni- versity of Kinshasa, Kinshasa, DR-Congo;National Institute for Research and Agronomic Studies (INERA), Kinshasa, DR-Congo
Abstract
Induced mutation in plant improvement has been used in several crops to generate new sources of genetic variations. A study was conducted to determine the effect of different doses of gamma irradiation on different morpho-agronomic characteristics. Agronomic traits that were analyzed included : grain yield, number of pods/plant, number of seeds/plant and weight of 100 seeds and numbers of days to 50% flowering. Morphometric characterisation of the descriptive data included plant height, stem diameter, number of leaves/plant, leaflet length, leaflet width and number of ramification/ plant. Groundnut seeds were treated with various doses of gamma rays (100, 200, 400 and 600 Gy). Among the various dose treatments, gamma rays treatment at 100 Gy resulted in a higher increase of grain yield and other morpho-agro nomic parameters especially for the JL24 variety. In fact the gamma irradiation at 100 Gy increased significantly grain yield by 14% for JL24, and 4 % for JL12. The number of pods per plant was increased by 2% for JL12 and 37% for JL24. For the number of seeds per plant, there was a significant increase of 8% for JL12, and 62% for JL24 at 100 Gy. A similar trend was observed for the JL24 at 200 Gy dose. Higher doses of gamma rays (400 and 600 Gy) reduced sig nificantly plant growth and grain yield. The usefulness of the mutants identified in a groundnut breeding program is discussed.
- A. O. Ojomo, O. Omueti, J. A. Raji and O. Omueti, “Studies in Induced Mutation in Cowpea, 5. The Variation in Protein Content Following Ionizing Radiation,” Journal of Applied Science, Vol. 21, 1979, pp. 61-64.
- Y. Takagi and T. Anai, “Development of Novel Fatty Acid Composition in Soybean Oil by Induced Mutation,” Oleoscience, Vol. 6, No. 4, 2006, pp. 195-203. http://dx.doi.org/10.5650/oleoscience.6.195
- J. Mudibu, K. K. Nkongolo, M. Mehes-Smith and A. Kalonji-Mbuyi, “Genetic Analysis of a Soybean Genetic Pool Using ISSR Marker: Effect of Gamma Radiation on Genetic Variability,” International Journal of Plant Breeding and Genetics, Vol. 5, No. 3, 2011, pp. 235-245. http://dx.doi.org/10.3923/ijpbg.2011.235.245
- J. Mudibu, K. K. Nkongolo, A. Kalonji-Mbuyi and R. Kizungu, “Effect of Gamma Irradiation on Morpho-Agronomic Characteristics of Soybeans (Glycine max L.),” American Journal of Plant Science, Vol. 3, No. 3, 2010, pp. 331-337. http://dx.doi.org/10.4236/ajps.2012.33039
- R. Avila and B. R. Murty, “Cowpea and Mungbean Improvement by Mutation Induction,” Mutation Breeding Newsletter, Vol. 21, 1983, p. 9.
- A. Micke, “Improvement of Grain Legume Production Using Induced Mutations,” International Atomic Energy Agency (IAEA), Pullman, 1-5 July 1986, pp. 1-51.
- B. N. Routaray, R. G. Mishra and S. N. Das, “Genetic Variability and Effectiveness of Some Chemical Mutagens on Blackgram in Relation to Resistance Source against Meloidogyne incognita,” Current Agricultural Research, Vol. 8, No. 3-4, 1995, pp. 113-118.
- N. Benslimani and L. Khelifi, “Induction of Dormancy in Spanish Groundnut Seeds (Arachis hypogaea L.) Using Cobalt 60 Gamma Irradiation,” In: Q. Y. Shu, Ed., Induced Plant Mutations in the Genomics Era, Food and Agriculture Organization of the United Nations (FAO), Rome, 2009, pp. 381-384.
- H. L. Nadaf, S. B. Kaveri, K. Madhusudan and B. N. Motagi, “Induced Genetic Variability for Yield and Yield Components in Peanut (Arachis hypogaea L.),” In: Q. Y. Shu, Ed., Induced Plant Mutations in the Genomics Era., Food and Agriculture Organization of the United Nations (FAO), Rome, 2009, pp. 346-348.
- S. A. Devi and L. Mullainathan, “Effect of Gamma Rays and Ethyl Methane Sulphonate (EMS) in M3 Generation of Blackgram (Vigna mungo L. Hepper),” African Journal of Biotechnology, Vol. 11, No. 15, 2012, pp. 3548-3552.
- V. L. Chopra, “Mutagenesis: Investigating the Process and Processing the Outcome for Crop Improvement,” Current Science, Vol. 89, No. 2, 2005, pp. 353-359.