Cassava response to contrasting environments: case study of genotype by environment effect on pests and diseases, root yield, and carotenoids content in Cameroon.

Genotype by environment interaction remains a substantial issue in all breeding programs. Crop genotypes are generally developed in a central breeding location, but always require the evaluation of breeding products in different environments. This is particularly relevant in countries that have a wide range of climates. Eighteen cassava genotypes were evaluated in Cameroon in eight environments—varying in seasonal rainfall and temperature patterns and soil characteristics—over two cropping seasons. Soil nutrient content was analyzed and trials were established in a randomized complete block design in three replications. Response of genotypes to major cassava pests and diseases, yield and carotenoids content was evaluated. It was observed that four genotypes did not show cassava mosaic disease (CMD) symptoms irrespective of the environments. The local check had highest CMD incidence and severity across all environments. Average number of whitefly per plant across all environments was highest on TMS 96/0023. Average cassava green mite (CGM) infestation was low on all the genotypes. Fresh root yield of five genotypes ranged between 25 and 30 tons per ha for both years. Significant and positive correlation was found across locations between fresh root yield and soil K, P and Mg. AMMI analysis revealed highly significant differences among genotypes and environments and significant genotype × environment interaction for most of the estimated traits, indicating variability in genotypes performance with environment.

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Additional Info

Field Value
Creator Fotso Kuate, Apollin
Creator Affiliation International Institute of Tropical Agriculture (IITA)
Creator ID Type ORCID
Creator ID 0000-0002-5247-7519
Subject Vocab (AGROVOC/GACS/CAB) Cassava,Carotenoids,Genotypes,Stems,Nymphs,Parasitism,Cassava mosaic disease,Yield
Subject(s) Cassava Green Mite
Publisher International Institute of Tropical Agriculture (IITA)
Contributor Person Hanna, Rachid; Kulakow, Peter; Parkes, Elisabeth, Iluebbey, Francis; Ngome, Francis Ajebesone; Suh, Christopher; Massussi, Jacques; Choutnji, Ibrahim; Wirnkar, Venasius Lendzemo
Contributor Role Other
Contributor Project Lead Organisation Center International Institute of Tropical Agriculture (IITA)
Contributor Project Lead Center International Institute of Tropical Agriculture (IITA)
Contributor CRP CGIAR Research Program on Roots, Tubers and Banana(RTB)
Contributor Partner Not Applicable
Contributor Donor Cameroonian Government, World Bank
Contributor Project Agricultural Investments and Market Development Project (PIDMA)
Contributor Affiliation International Institute of Tropical Agriculture (IITA)
Open-Access status Open Access
Production Date 2016-04-14
Embargo End Date
Content Type Dataset
File Format csv
Identifier Type DOI
Identifier https://doi.org/10.25502/hpny-t275/d
Identifier Citation Fotso Kuate A, Hanna R, Kulakow P, Parkes E, Iluebbey P, Ngome F A, Suh C, Massussi J, Choutnji I and V.L. Wirnkar. 2018 AMMI analysis of cassava response to contrasting environments: case study of genotype by environment effect on pests and diseases, root yield, and carotenoids content in Cameroon Euphytica (2018) 214:155 doi: https://doi.org/10.1007/s10681-018-2234-z
Source Agricultural Investments and Market Development Project (PIDMA)
Language English
Relation Not applicable
Agroecological Zone Humid warm tropics
Coverage Region Sub-Saharan Africa
Coverage country Cameroon
Coverage Admin Unit Not applicable
Coverage X 7.36972
Coverage Y 12.35472
Coverage Start Date
Coverage End Date 2016-04-14
Contact Fotso Kuate, Apollin; Visiting Scientist, International Institute of Tropical Agriculture (IITA)
Contact Email a.fotso@cgiar.org
Restriction CC-BY 4.0
Email Permission Not applicable
Rights CC-BY 4.0