Abstract

Cowpea (Vigna unguiculata L.) is the most important grain legume crop grown in tropical and subtropical regions. Cowpea grain has a high nutritional value containing high amount of protein (23–29%)...

Highlights

  • Evaluation of genetic diversity, variation, and genetic distance in cowpea genotypes has been conducted in several studies according to morphological and physiological markers (Ntundu, Shillah, Marandu, & Christiansen, 2006; Ouedraogo, Thiombiano, Hahn-Hadjali, & Guinko, 2008; Siise and Massawe, 2013; Stoilova & Pereira, 2013), and molecular markers such as Amplified Fragment Length Polymorphism (AFLP) (Coulibaly, Pasquet, Papa, & Gepts, 2002; Tosti & Negri, 2002), Random Amplified Polymorphism DNA

  • Based on regression analysis under normal irrigation and drought stress condition (Table 9), a large number of alleles for most of the traits showed a high percentage of variation, suggesting that this model can be used in modifying depending on the marker

  • Genetic diversity is a prerequisite for genetic improvement of agricultural crops

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Summary

Introduction

Evaluation of genetic diversity, variation, and genetic distance in cowpea genotypes has been conducted in several studies according to morphological and physiological markers (Ntundu, Shillah, Marandu, & Christiansen, 2006; Ouedraogo, Thiombiano, Hahn-Hadjali, & Guinko, 2008; Siise and Massawe, 2013; Stoilova & Pereira, 2013), and molecular markers such as Amplified Fragment Length Polymorphism (AFLP) (Coulibaly, Pasquet, Papa, & Gepts, 2002; Tosti & Negri, 2002), Random Amplified Polymorphism DNA (RAPD) (Fall, Diouf, Fall-Ndiaye, Badiane, & Gueye, 2003; Prasanthi, Geetha, Jyothi, & Reddy, 2012), Restriction Fragment Length Polymorphism (RFLP) (Fatokun, Danesh, & Young, 1993), and Microsatellite or SSRs markers (Badiane, Diouf, Sané, & Diouf, 2004; Chabane, Moummi, & Benramache, 2014; Gharghani et al, 2009; Li, Fatokun, Ubi, Singh, & Scoles, 2001). As main objectives of this study were to investigate the extent of genetic diversity and relationship between cowpea genotypes belonging to Iranian germplasms and assess the significant correlation among distances approximated based on morphological character and molecular (SSR) markers

Materials and methods
Result
71.2 Vm68 weight grain per pod
Findings
Discussion

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