Related Experiment Video
Updated: Dec 18, 2025

Multipronged Phenotyping Approaches to Characterize Sugarcane Root Systems
Published on: August 17, 2022
Continuous Storage Root Formation and Bulking in Sweetpotato.
Astere Bararyenya1, Phinehas Tukamuhabwa1, Paul Gibson1
1Department of Agricultural Production, College of Agricultural and Environmental Sciences, Makerere University, Kampala, Central Uganda, Box 7062, Uganda.
This study identified sweetpotato genotypes with continuous storage root formation and bulking (CSRFAB) for piecemeal harvesting. These CSRFAB varieties can significantly increase sweetpotato yields for small-scale farmers.
Area of Science:
- Agricultural Science
- Plant Breeding
- Genetics
Background:
- Sweetpotato genotypes exhibit diverse storage root formation and bulking (CSRFAB) patterns.
- Understanding these patterns is crucial for developing varieties suitable for piecemeal harvesting, benefiting small-scale farmers.
- Previous research has not fully explored the phenotypic variation in CSRFAB.
Purpose of the Study:
- To investigate the phenotypic variation in continuous storage root formation and bulking (CSRFAB) growth patterns in sweetpotato.
- To identify potential sweetpotato varieties adapted to piecemeal harvesting for small-scale farmers.
- To evaluate the heritability and reproducibility of CSRFAB traits.
Main Methods:
- Utilized 130 sweetpotato genotypes from two distinct populations (Uganda A and Uganda B).
- Conducted field trials over two seasons in Uganda with randomized complete block design.
- Employed a scoring scale (1-9) for growth changes and analyzed data using restricted maximum likelihood (REML).
Main Results:
- Observed non-linear growth patterns in CSRFAB across locations, seasons, and genotypes.
- Identified genotypes with early and late bulking initiation.
- Reported low broad-sense heritability for CSRFAB due to GxE interactions, but higher heritability for other traits.
- Achieved 89% reproducibility between seasons.
Conclusions:
- Continuous storage root formation and bulking (CSRFAB) genotypes can more than double sweetpotato production compared to discontinuous types.
- CSRFAB is an under-researched component of storage root yield with significant potential.
- Selection of appropriate CSRFAB genotypes is vital for enhancing sweetpotato productivity for small-scale farmers.
Related Concept Videos
Basic Plant Anatomy: Roots, Stems, and Leaves
Sugars as Energy Storage Molecules
Primary and Secondary Growth in Roots and Shoots
Seed Structure and Early Development of the Sporophyte
Water and Mineral Acquisition
Meristems and Plant Growth

