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Genetic analysis of yield and quality characteristics in provitamin A hybrid cassava families in Ghana

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Title Genetic analysis of yield and quality characteristics in provitamin A hybrid cassava families in Ghana
 
Creator Peprah, B.B.
Parkes, E.
Kulakow, Peter
van Biljon, A.
Labuschagne, Maryke T.
 
Subject cassava
dry matter content
carotenoids
genetics
roots
yields
 
Description Open Access Journal; Published online: 23 Sep 2021
Cassava is the most widely cultivated and consumed crop in Ghana. Malnutrition is endemic in cassava-producing regions of Africa, partly due to the low micronutrient content of this crop. The aim of this study was to generate genetic information on characteristics such as total carotenoid content, dry matter content, root weight and number, and cassava mosaic disease (CMD), and their possible combination in cassava clones, using a North Carolina II breeding scheme. Five genetically diverse yellow-fleshed clones at advanced selection stages, with CMD resistance, were used as females and two high dry matter content white-fleshed clones, selected from farmers’ fields in Ghana, were used as males. Ten F1 families were generated, and evaluated at two locations in Ghana. General combining ability (GCA) mean squares were larger than specific combining ability (SCA) mean squares for harvest index, CMD, and carotenoid content, indicating additive genetic effects. The positive significant correlations that were observed between pulp color and carotenoid content; carotenoid content and CMD; pulp color and CMD; and pulp color and cortex color, make the screening of large numbers of progenies possible in the cassava breeding program. This could allow breeders to combine carotenoid content and CMD at the early breeding stages through visual assessment of pulp color and CMD symptoms. Large numbers of genotypes can be evaluated and a few can be selected to be quantified for carotenoid content at later stages of the breeding program, to save costs. One of the parents (P6), showed positive GCA effects for carotenoid content, dry matter content, CMD and storage root weight, hence could be used as a parent to generate clones that combine carotenoid content and dry matter content.
 
Date 2021-09-23
2022-02-02T15:28:36Z
2022-02-02T15:28:36Z
 
Type Journal Article
 
Identifier Peprah, B.B., Parkes, E., Kulakow, P., van Biljon, A. & Labuschagne, M.T. (2021). Genetic analysis of yield and quality characteristics in provitamin A hybrid cassava families in Ghana. Agronomy, 11(10), 1-11.
2073-4395
https://hdl.handle.net/10568/117918
https://doi.org/10.3390/agronomy11101911
BIOTECH & PLANT BREEDING
 
Language en
 
Rights CC-BY-4.0
Open Access
 
Format 1-11
application/pdf
 
Source Agronomy