Genetic Variation and Postflowering Drought Effects on Seed Iron and Zinc in ICRISAT Sorghum Mini Core Collection

Upadhyaya, Hari D.; Dwivedi, Sangam L.; Singh, Sube; Sahrawat, K. L.; Singh, Shailesh Kumar

doi:10.2135/cropsci2015.05.0308

Cited by 29 publications

(23 citation statements)

References 41 publications

(47 reference statements)

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“…Grain Fe and Zn content in several crops including sorghum (Upadhyaya et al, 2016;Phuke et al, 2017), pearl millet (Kanatti et al, 2014), proso millet (Vetriventhan and Upadhyaya, 2018), and finger millet (Upadhyaya et al, 2011a) were significantly and positively correlated. However, in this study, Fe and Zn content showed significant correlation only in 2016, indicating that the performance of accessions between years and consequently the correlation between the traits, differ mainly due to the influence of year (environments) and genotype ´ year interaction.…”

Section: Discussionmentioning

confidence: 97%

Variability for Productivity and Nutritional Traits in Germplasm of Kodo Millet, an Underutilized Nutrient‐Rich Climate Smart Crop

Vetriventhan

Upadhyaya

2019

Crop Science

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1095 RESEARCH F ood and nutrition insecurity are the major threats to the world's population, particularly in Africa and Asia. Global food systems have become more dependent on a few major "staple" crops and three cereals (rice [Oryza sativa L.], wheat [Triticum aestivum L.], and maize [Zea mays L.]), which possess a lower concentration of mineral elements and provide >60% of plant-based human energy intake; this is greater in several countries in Asia (Cakmak and Kutman, 2018). The global population is projected to reach 9.8 billion by 2050, posing a great challenge in terms of a larger number of mouths to feed. It is important to grow different crops that contribute to dietary diversity for sustainable agriculture and healthy diets to ensure food and nutritional security (Rajendran et al., 2017; Vetriventhan and Upadhyaya, 2018). Current agricultural systems and food habits have encouraged research and development on major crops, neglecting minor and regionally important crops such as small millets (finger millet [Eleusine coracana (L.) Gaertn.], foxtail millet [Setaria italica (L.) P. Beauv.], proso millet [Panicum miliaceum L.], barnyard millet [Echinochloa crus-galli (L.) P. Beauv. and Echinochloa colona (L.) Link], kodo millet [Paspalum scrobiculatum L.], little millet [Panicum sumatrense Roth ex Roem. & Schult.], etc.). Small millets are naturally biofortified crops and are nutritionally superior to the major food staples, as their grains are rich in protein, minerals, vitamins, and essential amino acids, and they play an important role in food ABSTRACT Kodo millet (Paspalum scrobiculatum L.

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Section: Discussionmentioning

confidence: 97%

Variability for Productivity and Nutritional Traits in Germplasm of Kodo Millet, an Underutilized Nutrient‐Rich Climate Smart Crop

Vetriventhan

Upadhyaya

2019

Crop Science

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“…The controls included in this study were: ‘IS 2205’, ‘IS 18758’, and ‘IS 33844’; among these, IS 33844 is the most popular sorghum cultivar grown under receding soil moisture conditions during the post‐rainy season in India, whereas IS 18758 is cultivated in Burkina Faso and Burundi (Upadhyaya et al, 2014a). IS 33844 has exceptionally high plasticity to perform well under diverse environmental conditions, is tolerant to terminal drought, and possesses excellent grain quality attributes (Upadhyaya et al, 2016). IS 2205, a durra‐bicolor landrace from India, is resistant to shoot fly [ Atherigona soccata (Rondani)] and stem borer [ Chilo partellus (Swinhoe)].…”

Section: Methodsmentioning

confidence: 99%

Post‐Flowering Drought Tolerance Using Managed Stress Trials, Adjustment to Flowering, and Mini Core Collection in Sorghum

et al. 2017

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Sorghum [Sorghum bicolor (L.) Moench] crop in the semiarid tropics often suffers from post‐flowering drought stress, which causes substantial losses in grain yield and stover quality. This research was aimed at studying the yield response of sorghum mini core accessions to post‐flowering drought stress to identify drought‐tolerant sources for sorghum improvement. Mini core accessions were grouped based on days to 50% flowering (extra early, early, medium, late, and extra late) and evaluated in two post‐rainy seasons under managed drought stress and optimally irrigated conditions. Drought tolerance index (DTI), as a standard residual after removing the known contributory effects of flowering time and grain yield under optimum irrigation (yield potential) from the grain yield under drought, was used to segregate the genotypic responses to drought stress. The residual (or restricted) maximum likelihood analysis of data revealed significant genotypic variance (σ2g) for days to 50% flowering, grain yield, and DTI (except in the extra late flowering group), in both the seasons and significant genotype × environment interactions for DTI in extra early to late flowering groups. On the basis of DTI, seven accessions, i.e., ‘IS 14779’, ‘IS 23891’, ‘IS 31714’, ‘IS 4515’, ‘IS 5094’, ‘IS 9108’, and ‘IS 15466’, were identified as drought tolerant and five accessions were sensitive to drought in both of the post‐rainy seasons. The tolerant accessions belonging to durra, caudatum, or durra‐caudatum races were of diverse geographical origins, and most yielded at par with or greater than the extensively grown cultivar ‘IS 33844’. These accessions can be employed to investigate the physiological and molecular basis of drought adaptation and to breed for drought tolerance in sorghum.

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“…Nevertheless, association studies on sorghum cold tolerance using a much higher marker density showed the highly quantitative character of this trait. For instance, the authors of [21] performed GWAS using approximately 162,000 SNPs and found only one marker locus significantly associated with sorghum low temperature germination and none with vigor. For practical breeding, the highly quantitative character of cold tolerance traits strongly limits the possibilities of marker-assisted selection.…”

Section: Genome-wide Association Studies For Juvenile Chilling Tolerancementioning

confidence: 99%

“…Several studies have aimed at the identification of quantitative trait loci (QTL) for a better understanding of the physiological mechanisms behind chilling tolerance related traits, either in bi-parental populations [10,16,17] or diversity sets: 194 biomass lines from KWS company (Einbeck, Germany) [7,[18][19][20]; 242 accessions of the ICRISAT (International Crops Research Institute for the Semi-Arid Tropics) sorghum mini core collection [21]; 136 sorghum accessions from cooler regions of the world [14]; and 300 sorghum accessions from the U.S. sorghum association panel [22]. Genomic regions influencing traits of interest have been concordantly confirmed in these studies.…”

Section: Introductionmentioning

confidence: 99%

Sorghum as a Novel Crop for Central Europe: Using a Broad Diversity Set to Dissect Temperate-Adaptation

et al. 2019

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Sorghum (Sorghum bicolor L. Moench) is a promising novel crop for Central Europe. However, enhancements in cold tolerance and early maturity are essential for a successful adaptation to cooler climates. We scored a broad sorghum diversity set (n = 338) for early chilling tolerance, high-latitude adaptation, and bioenergy related agronomical traits in multi-environment trials. Our results show a high phenotypic variation and medium to high heritabilities for most traits, indicating that a robust breeding progress is feasible. Several public accessions with a good adaptation to cooler climates were identified, which can serve as valuable base material for sorghum breeding in temperate areas. Genome-wide association studies reveal a polygenic (quantitative) character for most of the traits, confirming previous studies. Hence, for practical breeding, it will be difficult to conduct efficient marker-assisted selection for temperate-adaptation traits in genetically diverse material.

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Genetic Variation and Postflowering Drought Effects on Seed Iron and Zinc in ICRISAT Sorghum Mini Core Collection

Cited by 29 publications

References 41 publications

Variability for Productivity and Nutritional Traits in Germplasm of Kodo Millet, an Underutilized Nutrient‐Rich Climate Smart Crop

Variability for Productivity and Nutritional Traits in Germplasm of Kodo Millet, an Underutilized Nutrient‐Rich Climate Smart Crop

Post‐Flowering Drought Tolerance Using Managed Stress Trials, Adjustment to Flowering, and Mini Core Collection in Sorghum

Sorghum as a Novel Crop for Central Europe: Using a Broad Diversity Set to Dissect Temperate-Adaptation

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