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Apr 30, 2023Keywords:
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Main Article Content
Morphological Characterization of Sweetpotato Genotypes Evaluated at Umudike, Abia State Nigeria
Abstract
Sweetpotato (Ipomoea batatas (L.) Lam), dicotyledonous plants belong to the family Convolvulaceae. Collecting and characterizing plant material has been the basis for crop improvement. Twenty-three genotypes of Sweetpotato (1pomea batata (L) Lam were obtained from the Sweetpotato Program of National Root Crops Research Institute Umudike in the 2022 cropping season. This study therefore sought to morphologically characterize these selected sweetpotato genotypes; to identify those important descriptor traits that contributed most to the observed variation among the genotypes. The data generated were analyzed for morphological diversity using principal component analysis (PCA), which was used in identifying the few characters that significantly influenced the observed variation.PCA analysis further indicated that there are variations among the sweetpotato genotypes studied. Predominant skin colour, Mature leaf colour, Secondary vine colour, Vine internode length, Plant type, Mature leaf shape, Leaf lobe number, Shape of central leaf number, Secondary skin colour and Flower habit are the major source of variation and are important descriptors traits that contributed most to the observed variation among all the sweetpotato genotypes studied Among the 23 genotypes of sweetpotato studied, the mean yield performance (t/ha) shows that there is no significant difference (P>0.05) between PGA 14011-43 (6.30t/ha) and LOCAL BEST (FV) (6.13 t/ha). However PGA 14011-43 (6.30 t/ha) is significantly higher in yield compared to all other sweetpotato genotypes Local Best (Fv) 6.13 t/ha, BUTTER MILK 5.87 t/ha, UMUSPO/3 (5.53 t/ha), PGA 14398-4 (5.07 t/ha), PGA 14442-1 (4.90 t/ha), 87/OP/195 (4.50 t/ha ), PGA 14351-4 (4.33 t/ha), CRI – OKUMCOM 3.67 t/ha, CEMSA 74228 3.60 t/ha CRI – DADANYUIE (3.60 t/ha), PO3/116 (2.80 t/ha), TIS 87/0087 (2.67t/ha), OBARE( 2.30t/ha), TU-PURPLE (2.30 t/ha), PO3/35 (2.27 t/ha), PGA 17362-N1 (2.23t/ha), PGA 17265-N1(2.26 t/ha), NWOYORIMA (2.17 t/ha), KWARA (2.1 t/ha), PGN1 6021-39 (2.00 t/ha) and PGA 14008 – 9 (1.97 t/ha).
