ABSTRACT
Sweet potato (Ipomoea batatas (L) Lam) is one
of the most important root crops in the world, particularly in sub-Sahara
Africa. Collecting and characterizing plant material has been the basis for
crop improvement, Diversity studies has long been seen as vital for rational
management and use of crops. Thirty-two newly developed clones (progenies) and
their parents [Tis 8164 (Ml), Centennial (F2), Umuspo 3 (mother delight) Fl, Umuspo
2 (M3) and Tio Joe (F5)]were obtained from sweet potato breeding program of
National Root Crops Research Institute Umudike and planted at western farm of
the Institute , replicated three times in randomized complete block design and
characterized to determine the expressions of character using International
Potato Centre (CIP) descriptors. Eighteen (18) morphological characters were
used [Plant growth characteristics: plant type (PT), ground cover (GC); mature
vine characteristics: vine internode length (VIL), predominant vine colour
(PVC), secondary vine colour (SVC), vine tip pubescence (VTP); mature leaf
characteristics: general outline of leaf (GOL), leaf lobes number (LLN), mature
leaf size (MLS), shape of central leaf lobe (SCLL), mature leaf colour (MLC),
immature leaf colour (ILC); flowering habit (FH); Storage root characteristics:
predominant skin colour (PSC), secondary skin colour (SSC), predominant flesh
colour (PFC), secondary flesh colour (SFC), distribution of secondary flesh
colour (DSFC) and storage root shape (SRS)]. This study therefore sought to
morphologically characterize the selected progenies; to identify those
important descriptor traits that contributed most to the observed variation
among all the progenies. Also, to determine the progenies that are parent-like
and to evaluate the progenies that are less susceptible to sweetpotato virus
disease (SPVD). 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 among the
progenies. In summary, this study revealed that ground cover, vine internode
length, predominant skin colour, secondary skin colour, flower colour, flower
habit, mature leaf, leaf lobe type and leaf lobe number were important
descriptor traits in segregating sweet potato and also indicated progenies and
parents that were less susceptible to SPVD for breeding purposes and, to
farmers for a good yield
KOLAWOLE, F (2021). Diversity Studies On Morphological Attributes Of Segregating Sweet potato (Ipomoea Batatas (L.) Lam) Genotypes At Clonal Stage.. Mouau.afribary.org: Retrieved Sep 19, 2024, from https://repository.mouau.edu.ng/work/view/diversity-studies-on-morphological-attributes-of-segregating-sweet-potato-ipomoea-batatas-l-lam-genotypes-at-clonal-stage-7-2
FOLUKE, KOLAWOLE. "Diversity Studies On Morphological Attributes Of Segregating Sweet potato (Ipomoea Batatas (L.) Lam) Genotypes At Clonal Stage." Mouau.afribary.org. Mouau.afribary.org, 07 Jul. 2021, https://repository.mouau.edu.ng/work/view/diversity-studies-on-morphological-attributes-of-segregating-sweet-potato-ipomoea-batatas-l-lam-genotypes-at-clonal-stage-7-2. Accessed 19 Sep. 2024.
FOLUKE, KOLAWOLE. "Diversity Studies On Morphological Attributes Of Segregating Sweet potato (Ipomoea Batatas (L.) Lam) Genotypes At Clonal Stage.". Mouau.afribary.org, Mouau.afribary.org, 07 Jul. 2021. Web. 19 Sep. 2024. < https://repository.mouau.edu.ng/work/view/diversity-studies-on-morphological-attributes-of-segregating-sweet-potato-ipomoea-batatas-l-lam-genotypes-at-clonal-stage-7-2 >.
FOLUKE, KOLAWOLE. "Diversity Studies On Morphological Attributes Of Segregating Sweet potato (Ipomoea Batatas (L.) Lam) Genotypes At Clonal Stage." Mouau.afribary.org (2021). Accessed 19 Sep. 2024. https://repository.mouau.edu.ng/work/view/diversity-studies-on-morphological-attributes-of-segregating-sweet-potato-ipomoea-batatas-l-lam-genotypes-at-clonal-stage-7-2