Genetic variation and genotype by environment interaction in Jatropha curcas L. germplasm evaluated in different environments of Cameroon

Senger, Elisa; Martin, Matthias; Dongmeza, Euloge; Montes, Juan M.

doi:10.1016/j.biombioe.2016.04.017

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…Batchenga is characterized by two short growing seasons per year, which might be too short for most genotypes to complete their reproductive cycle and produce higher seed yields. Plants at the humid site had reached a significantly higher plant height (2.8 m, Table 4) than at the dry-subhumid site (1.6 m, Table 3), which is in agreement with earlier observations [4,8]. It is likely that jatropha plants react with an increased vegetative growth and biomass accumulation at humid sites like Batchenga, whereas generative growth and seed production is fostered at less humid sites like Ihosy.…”

Section: Effects Of Locations and Yearssupporting

confidence: 90%

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Effects of Genotype, Direct Sowing and Plant Spacing on Field Performance of Jatropha curcas L.

Andrianirina

Martin²,

Dongmeza³

et al. 2019

Agronomy

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The tropical multiuse tree Jatropha curcas L. (jatropha) is highly promoted as oilseed crop for biodiesel production and for climate change mitigation, but cultivation practices require further research. The objectives of this study were to assess the effects of varying plant spacings (2.0 m × 4 m compared to 1.5 m × 4 m), crop establishment methods (raising plantlets in a nursery prior to planting to the field compared to direct sowing) and genotypes on seed yield, seed quality and plant height, recorded at a dry-subhumid location in Madagascar (Ihosy) and at a humid location in Cameroon (Batchenga). Averaged across treatment variants and genotypes, seed yield and seed oil content were higher at the dry-subhumid site and in particular the narrower spacing reached higher seed yields per unit area than the wider spacing. At the humid site, plant growth was characterized by strong accumulation of biomass. The establishment method tested at the dry-subhumid site showed no significant differences in the recorded parameters. Our results encourage to re-think common practices in jatropha cultivation and underpin the importance of the correct choice of location, genotype and agronomic practices considering the interactions between all factors.

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Section: Effects Of Locations and Yearssupporting

confidence: 90%

“…Its agronomic performance depends on the genotype, the environmental conditions, and the interaction between these two factors [7]. Multi environmental testing conditions are needed to assess the effects of these three factors in order to select the best performing cultivars [8].…”

Section: Introductionmentioning

confidence: 99%

Effects of Genotype, Direct Sowing and Plant Spacing on Field Performance of Jatropha curcas L.

Andrianirina

Martin²,

Dongmeza³

et al. 2019

Agronomy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Worldwide demand for vegetable oils used in biodiesel elabora tion has markedly grown during the last years due to governmental decisions aiming to reduce greenhouse gas emissions and depen-One of the most currently promoted new crops is the perennial species ]atropha curcas L. (Euphorbiaceae ), due to promising high seed yields with high oil concentrations (33-39%; Ginwal et al, 2004) and oil quality reaching international biodiesel standards (Achten et al, 2008). Edrisi et al, 2015), but experimental results showed great variability and lower yields than expected (0.4-2.0 tha-1 ; Senger et al, 2016;Wani et al, 2016;Van Eijck et al, 2014;Laviola et al, 2014). These results are largely the consequence of low genetic improvement combined with poor development of crop management technology.…”

Section: Introductionmentioning

confidence: 99%

Harvest date modifies seed quality and oil composition of Jatropha curcas growth under subtropical conditions in Argentina

Wassner

Borrás²,

Vaca‐Garcia

et al. 2016

Industrial Crops and Products

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“…Large-scale production of Jatropha oil in Madagascar for the global market is not commercially viable with the currently used planting material, but improved cultivars are developed (see Senger et al, 2016) and local marketing options are available. Furthermore, since biofuel production has positive effects on poverty reduction and food security, (different) energy crops could be incorporated in rural energy projects, in agroforestry systems, in public works programs, e.g.…”

Section: Conclusion and Recommendationsmentioning

confidence: 99%

Large-scale biofuel production and food security of smallholders: Evidence from Jatropha in Madagascar

Bosch

Zeller

2019

Food Sec.

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Large-scale agricultural investment in land was found to lead to positive employment and poverty reduction effects, however depending on the institutional context and the type of investment. This article aims to provide insights into the relationship between wage work for a large-scale Jatropha project and household food security, namely dietary diversity and food shortage. After the initial hype and the subsequent downfall of Jatropha, new projects are still being undertaken, yet little evidence in quantifying the long-term impacts of large-scale Jatropha production on smallholders' livelihoods exists. This article contributes to addressing this gap by using five rounds of panel data collected from 2008 to 2013 from 390 randomly selected households near a Jatropha project in Madagascar. Results show that labour demand declined substantially after the build-up phase and incomes from wage work were mostly used for food and other necessities. Impacts are estimated with the help of fixed effects models. Jatropha wage work contributed significantly to improved dietary diversity but not to a reduction of food shortage. Food production and consumption furthermore were highly influenced by seasonality, drought and locust plagues, which implies that complementing income creation with agricultural development strategies might have further positive effects on food security.

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Genetic variation and genotype by environment interaction in Jatropha curcas L. germplasm evaluated in different environments of Cameroon

Cited by 12 publications

References 17 publications

Effects of Genotype, Direct Sowing and Plant Spacing on Field Performance of Jatropha curcas L.

Effects of Genotype, Direct Sowing and Plant Spacing on Field Performance of Jatropha curcas L.

Harvest date modifies seed quality and oil composition of Jatropha curcas growth under subtropical conditions in Argentina

Large-scale biofuel production and food security of smallholders: Evidence from Jatropha in Madagascar

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