An assessment of yield gains under climate change due to genetic modification of pearl millet

Singh, Piara; Boote, Kenneth J.; Kadiyala, M D M; Nedumaran, Swamikannu; Gupta, S. K.; Srinivas, K.; Bantilan, M C S

doi:10.1016/j.scitotenv.2017.06.002

Cited by 81 publications

(49 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to findings from Traore et al (2017), relative yield losses were lower for millet than maize (and additionally sorghum in our case). Likewise, Adiku et al (2015) and Singh et al (2017) reported positive impacts of climate change on millet yields in the region when [CO 2 ] effects were included for some locations and climate models. Millet is generally considered the most heat and drought tolerant cereal crop (Varshney et al 2017) and this is reflected in the models (e.g.…”

Section: Implications Of 15 • C Versus 20 • C Warmingmentioning

confidence: 97%

“…If drought stress is in fact increasing, it implies that there may be little opportunity to adopt longer season varieties to gain back the portion of the season (and radiation capture) lost due to accelerated development. Results reported by Singh et al (2017) indicated that drought and heat tolerant cultivars with long duration will be needed under climate change to avoid yield losses. This is an aspect that should be evaluated in more detail and could be assessed by adding simulations with potential yield levels and quantifying the yield changes due to water stress in each warming scenario.…”

Section: Drivers Of Yield Changesmentioning

confidence: 99%

See 1 more Smart Citation

Impacts of 1.5 versus 2.0 °C on cereal yields in the West African Sudan Savanna

Faye

Webber

Naab

et al. 2018

Environ. Res. Lett.

View full text Add to dashboard Cite

To reduce the risks of climate change, governments agreed in the Paris Agreement to limit global temperature rise to less than 2.0 • C above pre-industrial levels, with the ambition to keep warming to 1.5 • C. Charting appropriate mitigation responses requires information on the costs of mitigating versus associated damages for the two levels of warming. In this assessment, a critical consideration is the impact on crop yields and yield variability in regions currently challenged by food insecurity. The current study assessed impacts of 1.5 • C versus 2.0 • C on yields of maize, pearl millet and sorghum in the West African Sudan Savanna using two crop models that were calibrated with common varieties from experiments in the region with management reflecting a range of typical sowing windows. As sustainable intensification is promoted in the region for improving food security, simulations were conducted for both current fertilizer use and for an intensification case (fertility not limiting). With current fertilizer use, results indicated 2% units higher losses for maize and sorghum with 2.0 • C compared to 1.5 • C warming, with no change in millet yields for either scenario. In the intensification case, yield losses due to climate change were larger than with current fertilizer levels. However, despite the larger losses, yields were always two to three times higher with intensification, irrespective of the warming scenario. Though yield variability increased with intensification, there was no interaction with warming scenario. Risk and market analysis are needed to extend these results to understand implications for food security.

show abstract

Section: Implications Of 15 • C Versus 20 • C Warmingmentioning

confidence: 97%

Section: Drivers Of Yield Changesmentioning

confidence: 99%

Impacts of 1.5 versus 2.0 °C on cereal yields in the West African Sudan Savanna

Faye

Webber

Naab

et al. 2018

Environ. Res. Lett.

View full text Add to dashboard Cite

show abstract

“…Hence, this deep-root system does not require a high quantity of fertilizer in comparison with other crops. Pearl millet (Pennisetum glaucum) accounts for more than 50% of the global millet production [64]. Compared to traditional cereal crops, pearl millet requires lower amounts of resources for its growth and can grow in adverse conditions (e.g., water and fertilizer shortage) due to its physiological characteristics [24,65].…”

Section: Milletmentioning

confidence: 99%

“…They recommend the expansion of millet plantations in the province due to the rising temperature [69]. Furthermore, a study simulated the impact of temperature change on the yield of millet through a modified CSM-CERES-Pearl millet simulation model [64]. The results found that the millet yield increased by 6% after drought (lower limit of soil water availability) and 8% after heat simulation (increased from 27 • C to 29 • C).…”

Section: Milletmentioning

confidence: 99%

Effect of Climate Change on the Yield of Cereal Crops: A Review

Jin

Vanga

Saxena

et al. 2018

Climate

244

View full text Add to dashboard Cite

By the end of this century, the average global temperature is predicted to rise due to the increasing release of greenhouse gases (GHGs) into the atmosphere. This change in climate can reduce agricultural yields, resulting in food insecurity. However, agricultural activities are one of the major contributors of GHGs and lower yields can trigger increased activity to meet the demand for food, resulting in higher quantities of GHGs released into the atmosphere. In this paper, we discuss the growth requirements and greenhouse gas release potential of staple cereal crops and assess the impact of climate change on their yields. Potential solutions for minimizing the influence of climate change on crop productivity are discussed. These include breeding to obtain cereals that are more tolerant to conditions caused by climate change, increased production of these new cultivars, improved irrigation, and more effective use of fertilizers. Furthermore, different predictive models inferred that climate change would reduce production of major cereal crops, except for millets due to their ability to grow in variable climatic conditions, and in dry areas due to a strong root system. Moreover, millets are not resource-intensive crops and release fewer greenhouse gases compared to other cereals. Therefore, in addition to addressing food security, millets have an enormous potential use for reducing the impact of agriculture on global warming and should be grown on a global scale as an alternative to major cereals and grains.

show abstract

“…It is also gluten-free and has hypoallergenic properties [4]. In a context of climate change leading to unpredictable weather patterns and rising temperatures in West Africa [5, 6], pearl millet could play an even more important role for food security because it can withstand hot and dry conditions that would lead to the failure of other locally grown cereal crops such as maize or sorghum. However, pearl millet lags far behind other cereals in terms of breeding and its yield is low.…”

Section: Introductionmentioning

confidence: 99%

Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum(L.) R. Br). Application to measure root system response to water stress in field conditions

Faye

Sine

Chopart³

et al. 2019

Preprint

View full text Add to dashboard Cite

2 profile in pearl millet (Pennisetum glaucum (L.) R. Br). Application to measure root 3 system response to water stress in field conditions Abstract 27Pearl millet, unlike other cereals, is able to withstand dry and hot conditions and plays an 28 important role for food security in arid and semi-arid areas of Africa and India. However, low 29 soil fertility and drought constrain pearl millet yield. One of the main targets to address these 30 constraints through agricultural practices or breeding is root system architecture. In this study, 31 in order to easily phenotype the root system in field conditions, we developed a model to 32 predict root length density (RLD) of pearl millet plants from root intersection densities (RID) 33 counted on a trench profile in field conditions. We identified root orientation as an important 34 parameter to improve the relationship between RID and RLD. Root orientation was notably 35 found to differ between thick roots (more anisotropic with depth) and fine roots (isotropic at 36 all depths). We used our model to study pearl millet root system response to drought and 37 showed that pearl millet reorients its root growth toward deeper soil layers that retain more 38 water in these conditions. Overall, this model opens ways for the characterization of the 39 impact of environmental factors and management practices on pearl millet root system 40 development. 41 43 Pearl millet (Pennisetum glaucum (L.) R. Br., syn. Cenchrus americanus (L.) Morrone) is a 44 cereal crop domesticated in the Western part of Sahel about 5,000 years ago [1]. It is well 45 adapted to dry tropical climate and low-fertility soils and therefore plays an important role for 46 food security in arid and semi-arid regions of sub-Saharan Africa and India. In these areas, 47 pearl millet is one of the most important sources of nutritious food [2, 3] and is the staple crop 48 for nearly 100 million people [4, 1]. Its grain is rich in protein, essential micronutrients and 49 calories. It is also gluten-free and has hypoallergenic properties [4]. In a context of climate 50 change leading to unpredictable weather patterns and rising temperatures in West Africa [5, 51 6], pearl millet could play an even more important role for food security because it can 52 withstand hot and dry conditions that would lead to the failure of other locally grown cereal 53 crops such as maize or sorghum. However, pearl millet lags far behind other cereals in terms 54 of breeding and its yield is low. The recent sequencing of a reference genome and about 1, 55 000 accessions [4] open the way for a new era of genomic-based breeding in pearl millet.56However, this will depend on the availability of phenotyping methods to characterize and 57 exploit the available genetic diversity and identify interesting target traits. 58Drought and low soil fertility are among the most important factors limiting pearl millet 59 yield. The root system is responsible for water and nutrient uptake, and root system 60 architecture is therefore a potential target ...

show abstract

An assessment of yield gains under climate change due to genetic modification of pearl millet

Cited by 81 publications

References 36 publications

Impacts of 1.5 versus 2.0 °C on cereal yields in the West African Sudan Savanna

Impacts of 1.5 versus 2.0 °C on cereal yields in the West African Sudan Savanna

Effect of Climate Change on the Yield of Cereal Crops: A Review

Development of a model estimating root length density from root impacts on a soil profile in pearl millet (Pennisetum glaucum(L.) R. Br). Application to measure root system response to water stress in field conditions

Contact Info

Product

Resources

About