Pearl Millet

Hash, C T; Bidinger, F. R.

doi:10.1201/9780203022030.ch5

Cited by 2 publications

(2 citation statements)

References 127 publications

(155 reference statements)

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“…As the length of the cropping season is very limited in these regions, the interruption of rainfall at the end of the rainy season can lead to terminal drought stress (from flowering through grain filling). This abiotic stress has the most radical impact on pearl millet grain and forage yield, as well as yield stability (Bidinger and Hash, 2004; Kholova and Vadez, 2012; Mahalakshmi et al, 1987; Winkel et al, 1997). In this context, having higher transpiration efficiency (TE), i.e.…”

Section: Introductionmentioning

confidence: 99%

Transpiration efficiency variations in the pearl millet reference collection PMiGAP

Gregoire,

Kholova,

Srivastava

et al. 2024

Preprint

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Transpiration efficiency (TE), the biomass produced per unit of water transpired, is a key trait for crop performance under limited water. As water becomes scarce, increasing TE would contribute to increase crop drought tolerance. This study is a first step to explore pearl millet genotypic variability for TE on a large and representative diversity panel. We analyzed TE on 538 pearl millet genotypes, including inbred lines, test-cross hybrids, and hybrids bred for different agroecological zones. Three lysimeter trials were conducted in 2012, 2013 and 2015, to assess TE both under well-watered and terminal-water stress conditions. We recorded grain yield to assess its relationship with TE. Up to two-fold variation for TE was observed over the accessions used. Mean TE varied between inbred and testcross hybrids, across years and was slightly higher under water stress. TE also differed among hybrids developed for three agroecological zones, being higher in hybrids bred for the wetter zone, underlining the importance of selecting germplasm according to the target area. Environmental conditions triggered large genotype-by-environment interactions, although TE showed some moderately high heritability. Transpiration efficiency was the second contributor to grain yield after harvest index, hence its relevance in pearl millet breeding programs. Future research on TE in pearl millet should focus (i) on investigating the causes of its plasticity i.e. the GxE interaction (ii) on studying its genetic basis and its association with other important physiological traits.

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Section: Introductionmentioning

confidence: 99%

Transpiration efficiency variations in the pearl millet reference collection PMiGAP

Gregoire,

Kholova,

Srivastava

et al. 2024

Preprint

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“…It is grown on over 30 million hectares, with more than 30.08 million metric tonnes of grain production worldwide ( Raheem et al, 2021 ). It provides the primary source of calories for millions of people in semi-arid tropical areas of Africa and India because of its better adaptation to harsh environmental conditions ( Yadav et al., 2002 ; Bidinger and Hash, 2004 ; Govindaraj et al., 2010 ). Approximately 40% of the world’s pearl millet is grown in Africa; about 85% is in West Africa.…”

Section: Introductionmentioning

confidence: 99%

Genotype-by-environment interactions for starch, mineral, and agronomic traits in pearl millet hybrids evaluated across five locations in West Africa

Gangashetty,

Yadav,

Riyazaddin

et al. 2023

Front. Plant Sci.

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IntroductionPearl millet is a staple cereal grown in the harshest environments of arid and semi-arid regions of Asia and sub-Saharan Africa. It is the primary source of calories for millions of people in these regions because it has better adaptation to harsh environmental conditions and better nutritional traits than many other cereals. By screening the pearl millet inbred germplasm association panel (PMiGAP), we earlier reported the best genotypes with the highest concentration of slowly digestible and resistant starch in their grains.MethodsIn the current study, we tested these 20 top-performing pearl millet hybrids, identified based on starch data, in a randomised block design with three replications at five locations in West Africa, viz. Sadore and Konni (Niger), Bambey (Senegal), Kano (Nigeria), and Bawku (Ghana). Phenotypic variability was assessed for agronomic traits and mineral traits (Fe and Zn).Results and discussionAnalysis of variance demonstrated significant genotypic, environmental, and GEI effects among five testing environments for agronomic traits (days to 50% flowering, panicle length, and grain yield), starch traits (rapidly digestible starch, slowly digestible starch, resistant starch, and total starch), and mineral trait (iron and zinc). Starch traits, such as rapidly digestible starch (RDS) and slowly digestible starch (SDS), showed nonsignificant genotypic and environmental interactions but high heritability, indicating the lower environmental influence on these traits in the genotype × testing environments. Genotype stability and mean performance across all the traits were estimated by calculating the multi-trait stability index (MTSI), which showed that genotypes G3 (ICMX207070), G8 (ICMX207160), and G13 (ICMX207184) were the best performing and most stable among the five test environments.

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Pearl Millet

Cited by 2 publications

References 127 publications

Transpiration efficiency variations in the pearl millet reference collection PMiGAP

Transpiration efficiency variations in the pearl millet reference collection PMiGAP

Genotype-by-environment interactions for starch, mineral, and agronomic traits in pearl millet hybrids evaluated across five locations in West Africa

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