Intraspecific variation in growth response to drought stress across geographic locations and genetic groups in Coffea canephora.

ABSTRACT: Uganda lies within the drier end of the natural distribution range of Coffea canephora and contains unexplored genetic material that could be drought-adapted and useful for developing climate-resilient varieties. Using water treatment: (i) ample and (ii) restricted-water, the response of 148 genotypes were studied comprising wild, feral and cultivated C. canephora. Biomass allocation, standing leaf area and leaf area growth data were collected. Linear mixed effect models and PCA were used to the analyze effect of water treatment on genotypes from different: (i) cultivation status, (ii) genetic groups and (iii) locations. We also assessed the relationship between drought tolerance for relative growth rate in leaf area (RGRA), total number of leaves (TNL), total leaf area (TLA)

SUBMITTER: Kiwuka C 

PROVIDER: S-EPMC9810788 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature