Genetic Diversity of Taro Landraces from Côte d’Ivoire Based on Qualitative Traits of Leaves  

作　　者：Jean-Michel Niambet Koffi Kevin Kouamé Koffi Severin Beket Bonny Arsène Irié Zoro Bi Jean-Michel Niambet Koffi;Kevin Kouamé Koffi;Severin Beket Bonny;Arsène Irié Zoro Bi(Unité de Phytotecthnie et Amélioration Génétique;UFR des Sciences de la Nature, Université Nangui Abrogoua, Abidjan, Côte d’Ivoire)

机构地区：[1]Unité de Phytotecthnie et Amélioration Génétique UFR des Sciences de la Nature, Université Nangui Abrogoua, Abidjan, Cô te d’Ivoire

出　　处：《Agricultural Sciences》2021年第12期1433-1446,共14页农业科学（英文）

摘　　要：Taro is an important crop species in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. It is cultivated for its tubers and leaves. But its knowledge and genetic diversity and differentiation are very weakly documented. Several morphological types are found in rural area, but their identification is not very clear, and their agronomic potentiality is underexploited. In this context we initiated a survey and collected 213 accessions from 14 growing regions of C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. The diversity was evaluated based on seven qualitative traits of leaves (Shape of the base of the leaf, Predominant position (shape) of the leaf blade surface, Margin of the leaf blade, Leaf blade variegation, Profile of the petiolar junction, Shape of the leaf sheath, Shape of the appendix) during an experimentation conducted in rural area. The objective of this study was to characterize the collection of taros collected in different geographical zones of C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire and identify the genera cultivated. Results of our study indicated that excepted margin of the leaf blade all traits are very discriminant. Several variants were observed for each of traits. According to observations and statistics analysis accessions were separated into two main groups. The characteristics of these groups indicate that taro cultivated in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire could belong to two genera: <em>Xanthosoma</em> and <em>Colocasia</em>.Taro is an important crop species in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. It is cultivated for its tubers and leaves. But its knowledge and genetic diversity and differentiation are very weakly documented. Several morphological types are found in rural area, but their identification is not very clear, and their agronomic potentiality is underexploited. In this context we initiated a survey and collected 213 accessions from 14 growing regions of C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire. The diversity was evaluated based on seven qualitative traits of leaves (Shape of the base of the leaf, Predominant position (shape) of the leaf blade surface, Margin of the leaf blade, Leaf blade variegation, Profile of the petiolar junction, Shape of the leaf sheath, Shape of the appendix) during an experimentation conducted in rural area. The objective of this study was to characterize the collection of taros collected in different geographical zones of C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire and identify the genera cultivated. Results of our study indicated that excepted margin of the leaf blade all traits are very discriminant. Several variants were observed for each of traits. According to observations and statistics analysis accessions were separated into two main groups. The characteristics of these groups indicate that taro cultivated in C<span style="white-space:nowrap;">&#244;</span>te d’Ivoire could belong to two genera: <em>Xanthosoma</em> and <em>Colocasia</em>.

关 键 词：Côte d’Ivoire COLOCASIA Diversity TARO Xanthosoma 

分 类 号：S51[农业科学—作物学]