African Journal of
Plant Science

  • Abbreviation: Afr. J. Plant Sci.
  • Language: English
  • ISSN: 1996-0824
  • DOI: 10.5897/AJPS
  • Start Year: 2007
  • Published Articles: 718

Full Length Research Paper

Effect of exposure time of fast neutron irradiation on growth and yield parameters of Capsicum annum and Capsicum frutescens

Olamide Ahmed Falusi 1*, Oladipupo Abdulazeez Yusuf Daudu1 and Jaime A. Teixeira da Silva2        
1Department of Biological Sciences, Federal University of Technology, Minna, Niger State, Nigeria. 2Faculty of Agriculture and Graduate School of Agriculture, Kagawa University, Miki cho, Kita Gun, Ikenobe, 761-0795, Japan.
Email: [email protected]

  •  Published: 30 June 2012


In order to assess the effect of fast neutron irradiation (FNI) on growth and yield parameters of Capsicum annum and Capsicum frutescens, 400 dry seeds of each species were exposed to FNI from an Americium Beryllium source with a flux of 1.5 ×104 n.cm2/s for five irradiation exposure periods (IEPs): 0, 30, 60, 90 and 120 min (100 seeds per treatment). Plant grown parameters (percent germination, plant height and number of leaves/plant) and yield parameters (number of fruit/plant, number of seeds/fruit, length of fruit and weight of fruit) from each FNI treatment and control were measured. Highly significant differences were observed in plant height and number of leaves/plant in both species. Different irradiation exposure periods tend to favour different yield parameters in C. annum in which the number of fruits/plant and number of seeds/fruit were improved by 90 min IEP, the width and length of fruit were favoured by 60 min IEP and the weight of fruit by 120 min IEP. The values obtained in C. frutescensshowed a reduction in fruit length and weight with an increase in irradiation exposure period (IEP). However, 90 min IEP resulted in more fruits/plant and wider plants. FNI serves as a valuable tool for the improvement of peppers (both C. annum and C.frutescens).


Key words: Capsicum annumCapsicum frutescens, fast neutron, irradiation exposure period.