Genetic and Phenotypic Diversity of Robusta Coffee (Coffea canephora L.)

Ngugi, Kahiu; Aluka, P.

doi:10.1016/b978-0-12-815864-7.00003-9

Cited by 5 publications

(7 citation statements)

References 17 publications

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“…The disparity of results between these studies and our study might be mostly due to the origin of the tested population. While these studies used populations from accessions conserved in ex-situ collections (Tshilenge et al 2009), cultivated landraces and gene bank accessions (Ngugi and Aluka 2019), and cultivated and wild Robusta coffee (Ng'homaa et al 2017), our study used population developed from selection. Because of their high diversity, some of the accessions used by these authors could be good candidates for improving Robusta coffee in Lampung.…”

Section: Resultsmentioning

confidence: 99%

“…Genetic diversity within Robusta coffee cultivated in Lampung is needed for developing a breeding strategy to produce better clones. Genetic diversity of plant genotypes could be studied on the basis of morphological (Ngugi et al 2019), biochemical (Mahmoud and Abd EL-Fatah 2020), and molecular (Motta et al 2014;Omingo et al 2017;Sousa et al 2017) markers. One of the drawbacks of using morphological and biochemical markers is that they are influenced by the environment, while molecular markers are not influenced by the environment (Bekele and Bekele 2014;Nadeem et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers

et al. 2021

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Abstract. Ramadiana S, Hapsoro D, Evizal R, Setiawan K, Karyanto A, Yusnita. 2021. Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers. Biodiversitas 22: 3122-3129. This study aimed to estimate the genetic diversity among 24 clones of Robusta coffee from Lampung, Indonesia, by use of RAPD markers. The clones consisted of 18 local and 6 BP clones. These BP clones were developed from a breeding program of The Indonesian Coffee and Cocoa Research Institute. Genomic DNAs extracted from these clones were subjected to polymerase chain reaction and the amplified products were run using gel electrophoresis. Eleven random primers produced clear, reproducible, scorable bands. Fifty-four of 86 bands showed polymorphism and were used to construct a dendrogram based on UPGMA Jaccard's Similarity Coefficients. The genetic base of the population was narrow (average genetic similarity 68.4%), ranging from 26-93%. The genetic similarity of the local clones was higher than that of BP clones. The clones were clustered into five groups. Group 1 contained one clone (BP 534), while each of Group II-V contained more than one clone. The average genetic similarity of BP 534 to each clone of Group II-V was 41%. The genetic similarity of clones in Group II, III, IV, and V were 55.5%, 43.0%, 81.1%, and 80.1%, respectively. This research should be very useful for selecting parents in a breeding program to produce better clones of Robusta coffee.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers

et al. 2021

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“…Several methods are used to evaluate genetic diversity, including morphologic, physicochemical, and molecular markers. Morphological markers are primordial to selection and have been substantially used to explain diversity among coffee accesses (AKPERTEY et al, 2019;NGUGI & ALUKA, 2019).…”

Section: Introductionmentioning

confidence: 99%

Morpho-agronomic and leaf anatomical traits in Coffeacanephora genotypes

et al. 2023

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Genetic variability is the basis for coffee genetic breeding. This study evaluated the potential of leaf anatomy and morpho-agronomic traits in studies of genetic variability in C. canephoracultivars. Ten genotypes were distributed in randomized block designs with three replicates. Significant differences among genotypes were detected by F-test (P < 0.05) for 13 of 15 evaluated traits. These results evidenced the heterogeneity of the studied cultivars, which is essential in composition of genetic basis in breeding programs. The Scott-Knott test detected variability among genotypes, grouped into up to four mean groups. Leaf anatomy traits presented the largest variations. Five out of seven leaf anatomy traits presented heritability higher than 80%, with emphasis on stomatal density (95.69%) and stomatal pore length (92.72%). Positive correlations were observed among morpho-agronomic and anatomic traits. Cluster analysis used the Mahalanobis general distance (D2) as a measure of genetic dissimilarity and divided the genotypes into two distinct groups. The inclusion of leaf anatomic traits to characterize C. canephoragenotypes may assist plant breeders with better genetic discrimination and with greater security in plant selection when composing cultivars.

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Section: Introductionmentioning

confidence: 99%

“…Uganda has been reported to have substantial C. canephora diversity (Kiwuka, 2020;Kiwuka et al, 2021;Musoli et al, 2009;Ngugi & Aluka, 2019) which could be explored to identify functional diversity in regard to drought stress. But to our knowledge, intraspecific comparisons of drought-related traits in C. canephora have been limited to cultivated material (DaMatta et al, 2003;Dias et al, 2007;King'oro, 2014;Menezes-Silva et al, 2015;Pinheiro & Var, 2004;Silva et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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

Kiwuka

Vos

Musoli

et al. 2023

Ecology and Evolution

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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) and total leaf dry weight (TLDW) of genotypes at final harvest. Restricted‐water reduced RGRA across genetic groups (3.2–32.5%) and locations (7.1–36.7%) but not cultivation status. For TNL, TLA and TLDW, genotypes that performed well in ample‐water performed worse under restricted‐water, indicating growth‐tolerance trade‐off. Drought tolerance in RGRA and TNL were negatively correlated with wetness index suggesting some degree of adaptation to local climate. Findings indicate a growth‐tolerance trade‐off within this tropical tree species and drought tolerance of Uganda's C. canephora is somewhat associated with local climate.

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Genetic and Phenotypic Diversity of Robusta Coffee (Coffea canephora L.)

Cited by 5 publications

References 17 publications

Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers

Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers

Morpho-agronomic and leaf anatomical traits in Coffeacanephora genotypes

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

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