ABSTRACT
The productivity of sweetpotato (Ipomoea
batatas (L.) Lam.) is mainly dependent on the acquisition of genotypes which
posses desirable traits and development of high yielding varieties with desired
quality attributes. For this purpose, a field experiment was carried out at the
National Root Crops Research Institute, Umudike, Nigeria, to characterize and
evaluate the level of diversity within and across eight different sweetpotato
families (Ligri X Sauti, Sauti X 442162, Ligri X Faara, Ligri X Apomoden, Sauti
X Bohye, Sauti X Ligri, Ligri Poly cross and Sauti Poly Cross). A total of one
hundred and forty one sweetpotato genotypes obtained from eight different
families of sweetpotato seeds sourced from the International Potato Center,
Kumasi, Ghana were used for this research work. The sweetpotato families which
were poly-cross (half-sib) and controlled cross (full-sib) were characterized
morphologically using International Potato Centre (CIP) descriptors. The study
was conducted during the 2015 and 2016 cropping seasons to characterize and
evaluate agronomic attributes of the sweetpotato genotypes. The 141 genotypes
and two checks (UMUSPO3 and TIS87/0087) were laid out in an augmented design.
Varied numbers of genotypes recorded significantly higher values than the mean
ofthe checks for days to physiological maturity, storage root fresh
weight/plant, total storage root yield, marketable storage root yield. However,
non significant differences were observed between genotypes for unmarketable
root weight. Ligri PC/17 had the highest storage root yield in 2015 cropping
season, while Sauti X Bohye/8 had the highest storage roots yield in 2016
cropping season. Most of the genotypes had pink skin color 58% and 55% for both
full-sib and half-sib families respectively while 34% of the genotypes had
creamy flesh color for both full sib and half sib families. The cluster
analysis revealed that all the genotypes belonging to the different eight
families were grouped into 4 different classes based on the morphological and
yield related attributes. Principal component analysis showed presence of
variations among genotypes for considerable number of traits and the
possibility of selecting genotypes for further breeding objectives. Findings
would also be useful for conservation planning of sweetpotato using molecular
techniques to confirm the variations observed
JOSEPH, I (2024). Diversity among populations of sweetpotato (ipomoea batatas (l.) Lam) obtained from poly cross and controlled cross systems:- Ulasi, Joseph I.. Repository.mouau.edu.ng: Retrieved Nov 13, 2024, from https://repository.mouau.edu.ng/work/view/diversity-among-populations-of-sweetpotato-ipomoea-batatas-l-lam-obtained-from-poly-cross-and-controlled-cross-systems-ulasi-joseph-i-7-2
IFEANYI, JOSEPH. "Diversity among populations of sweetpotato (ipomoea batatas (l.) Lam) obtained from poly cross and controlled cross systems:- Ulasi, Joseph I." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 28 Mar. 2024, https://repository.mouau.edu.ng/work/view/diversity-among-populations-of-sweetpotato-ipomoea-batatas-l-lam-obtained-from-poly-cross-and-controlled-cross-systems-ulasi-joseph-i-7-2. Accessed 13 Nov. 2024.
IFEANYI, JOSEPH. "Diversity among populations of sweetpotato (ipomoea batatas (l.) Lam) obtained from poly cross and controlled cross systems:- Ulasi, Joseph I.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 28 Mar. 2024. Web. 13 Nov. 2024. < https://repository.mouau.edu.ng/work/view/diversity-among-populations-of-sweetpotato-ipomoea-batatas-l-lam-obtained-from-poly-cross-and-controlled-cross-systems-ulasi-joseph-i-7-2 >.
IFEANYI, JOSEPH. "Diversity among populations of sweetpotato (ipomoea batatas (l.) Lam) obtained from poly cross and controlled cross systems:- Ulasi, Joseph I." Repository.mouau.edu.ng (2024). Accessed 13 Nov. 2024. https://repository.mouau.edu.ng/work/view/diversity-among-populations-of-sweetpotato-ipomoea-batatas-l-lam-obtained-from-poly-cross-and-controlled-cross-systems-ulasi-joseph-i-7-2