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Publication Title | The International Journal of Plant Reproductive Biology 6(1) pp. 31-34 2014

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The International Journal of Plant Reproductive Biology 6(1) pp. 31-34 , 2014

The effect of fast neutron radiation on meiosis in pollen mother cells of Capsicum annuum var. abbreviatum

Olamide Ahmed Falusi*, Oladipupo Abdulazeez Yusuf Daudu, Kolo Josephine Teni & Thomas Tanko

Department of Biological Sciences, Federal University of Technology, Minna, Niger State, Nigeria *e-mail: falusiolamide@gmail.com

Received: 10.07.2013 Revised & Accepted: 06. 08.2013; Published online: 01.10.2013

ABSTRACT

In order to assess the effect of fast neutron irradiation (FNI) on pmc meiosis of Capsicum anuum var abbreviatum, dry seeds of the variety were exposed to fast neutron irradiation (FNI) from an Americium Beryllium source with a flux of 1.5 × 104 n.cm-2 s-1. Five irradiation treatments, 0, 30, 60, 90, and 120 min. have been tried. The treated seeds were sown with their respective controls and the effects on the meiosis of the plants were studied. The results obtained showed that all irradiation treatments caused meiotic abnormalities, such as chromosome clumping, presence of univalents, multivalents, triads and micronuclei compared to the control plants. There was an increase in aberrant cells with increase in the duration of fast neutron irradiation (FNI); 120 minutes FNI treatment was found most potent in inducing cytological aberrations in pollen mother cells of treated pepper plants.

Keywords: C. annum var. abbreviatum, fast neutron, irradiation exposure period

INTRODUCTION

Pepper (Capsicum annuum) is one of the most varied and widely used foods in the world. It belongs to genus Capsicum L. (Solanaceae) which includes 27 species (Rodriguez et al. 1999, Onus & Pickersgill 2004, Vostava & Bosland 2002, Ince et al. 2009). Five of these, namely Capsicum annuum L., Capsicum baccatum L., Capsicum chinensis Jacq., Capsicum frutescens L. and Capsicum pubescens Ruiz and Pavan are domesticated. In Nigeria, the most important species, C. annuum L., bears both pungent (hot) and

sweet fruits which are in high demand because of pungence and good flavour (Falusi 2007, Idowu-agida et al. 2010). Although, pepper is widely cultivated throughout the country, the fruit yields are often very low (Adigun 2001). Production constraints such as low soil fertility, non availability of suitable cultivars/hybrids, biotic and abiotic stresses and development of new disease causing pathogens, as reported by Sharma & Singh (2009), are the major problems of pepper crop in Africa. The fruit yield in developing countries is 10 – 30% that in the developed countries (Erinle 1989, Grubben & Tahir 2004). Therefore, there is need for improvement of the crop by creating additional

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Image | The International Journal of Plant Reproductive Biology 6(1) pp. 31-34 2014



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