RETRACTED: Genetic Dissection of Pre-Flowering Growth and Development in &amp;lt;i&amp;gt;Sorghum bicolor&amp;lt;/i&amp;gt; L. Moench under Well-Watered and Drought Stress Conditions

Phương, Nguyễn Thị Thu; Afolayan, Gloria; Soda, M. El; Stützel, Hartmut; Wenzel, W. G.; Uptmoor, Ralf

doi:10.4236/as.2014.511100

Cited by 7 publications

(8 citation statements)

References 27 publications

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“…We found individual and consistent QTL for P R and E G with significant additive effects (Table 3) with the QTL for P R on chromosomes 4 and 6 colocating with grain number QTL described previously in sorghum (Nagaraja Reddy et al, 2013;Phuong et al, 2014). We found individual and consistent QTL for P R and E G with significant additive effects (Table 3) with the QTL for P R on chromosomes 4 and 6 colocating with grain number QTL described previously in sorghum (Nagaraja Reddy et al, 2013;Phuong et al, 2014).…”

Section: Discussionsupporting

confidence: 85%

Quantitative Trait Loci of Plant Attributes Related to Sorghum Grain Number Determination

Spagnolli

Mace²,

Jordan

et al. 2016

Crop Science

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The genetic basis of grain number determination in sorghum [Sorghum bicolor (L.) Moench] was studied based on canopy growth traits. Traits were crop growth rate (CGR) around flowering, plant reproductive biomass partitioning (PR) to the panicle, and grain‐set efficiency (EG) per unit of accumulated panicle biomass. Previous evidence has shown that these traits vary across commercial germplasm and that PR and EG are genotype‐specific traits with low environmental effects. Our hypothesis was that PR and EG are highly heritable traits correlated to grain number (and yield) for which environmentally consistent quantitative trait loci (QTL) could be detected. Studied recombinant inbred lines (RILs) showed important variation in yield, grain number per square meter, time to anthesis, plant height, CGR, PR and EG, and growth environments created significant genotype × environment interactions for most. Variability in grain number per square meter was significantly correlated with PR (p < 0.001) and EG (p < 0.001) but not with CGR (p > 0.05). Heritability estimates for PR and EG were larger than estimates for CGR, grain number per square meter, or yield. A multitrait, multienvironment approach over CGR, PR, and EG identified 12 QTL (LOD ≥ 2.5), explaining 21 to 36% of observed trait variability. No QTL were detected for CGR, while two and one environmentally consistent QTL were found for PR and EG, respectively. Results highlighted relevant information that could be potentially exploited in breeding programs.

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Section: Discussionsupporting

confidence: 85%

Quantitative Trait Loci of Plant Attributes Related to Sorghum Grain Number Determination

Spagnolli

Mace²,

Jordan

et al. 2016

Crop Science

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“…We used the raw data from three experiments in the present manuscript, although a transformed form of parts of the data was used earlier in a manuscript, which was submitted, published and later retracted from the Journal of Agricultural Sciences [12]. The retracted paper was published without permissions of all coauthors.…”

Section: Introductionmentioning

confidence: 99%

Unraveling the genetic complexity underlying sorghum response to water availability

et al. 2019

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Understanding the adaptation mechanisms of sorghum to drought and the underlying genetic architecture may help to improve its production in a wide range of environments. By crossing a high yielding parent (HYP) and a drought tolerant parent (DTP), we obtained 140 recombinant inbred lines (RILs), which were genotyped with 120 DArT and SSR markers covering 14 linkage groups (LGs). A subset of 100 RILs was evaluated three times in control and drought treatments to genetically dissect their response to water availability. Plants with early heading date (HD) in the drought treatment maintained yield (YLD) level by reducing seed number SN and increasing hundred seed weight (HSW). In contrast, early HD in the control treatment increased SN, HSW and YLD. In total, 133 significant QTL associated with the measured traits were detected in ten hotspot regions. Antagonistic, pleiotropic effects of a QTL cluster mapped on LG-6 may explain the observed trade-offs between SN and HSW: Alleles from DTP reduced SN and the alleles from HYP increased HSW under drought stress, but not in the control treatment. Our results illustrate the importance of considering genetic and environmental factors in QTL mapping to better understand plant responses to drought and to improve breeding programs.

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“…Вместе с тем устойчивость растений к абиотическим стрессорам обусловлена поддержанием водного баланса в клетках и тканях. Наступление засухи в начальный период развития растений приводит к снижению темпов роста и развития сорго, а во время цветения способствует частичной или полной потере урожайности зерна (Phuong et al, 2014;Amelework et al, 2015).…”

Section: оценка засухоустойчивости цмс-линий сорго на основе различных источников стерильностиunclassified

Assessment of drought resistance in sorghum CMS lines based on various sterility sources

Kibalnik¹,

Larina²,

Kameneva³

et al. 2021

Trudy po prikladnoy botanike, genetike i selektsii

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Background. Global climate changes have recently led to a more frequent occurrence of adverse factors and a decrease in the productivity of major crops. Sorghum is a highly drought-resistant crop that can tolerate long-term soil and air droughts with much lower harvest losses than wheat or barley. It is important to understand physiological mechanisms affecting drought tolerance when breeding efforts are aimed at improving the adaptability to abiotic conditions and productivity of sorghum hybrids.Materials and methods. Twenty sterile lines of grain sorghum with 8 types of CMS were studied in 2019 and 2020 in the arid conditions of Saratov Province. Indicators of the leaf water regime were assessed according to VIR’s guidelines. Statistical processing of the research results was performed using the AGROS 2.09 software.Results. The indicators of the leaf water regime that reflected differentiated responses of the CMS-line plants to the prevailing water and temperature stressors during the critical flowering period for sorghum were analyzed. Four CMS lines were identified according to the chosen set of indicators: they manifested 71.13–72.02% of total water content, 5.26–9.08% of water deficit, and 57.40–83.17% of water retention capacity on average for the two years of research. For the first time, the effect of CMS in sorghum on the manifestation of water regime indicators was registered. In isonuclear CMS lines, the greatest effect on drought resistance was shown by cytoplasm A3 versus A4 (with the Zheltozernoe 10 genome), cytoplasm A5 versus A1 (with the Karlik 4v genome), and M35-1A versus the analog on cytoplasm 9E (with the Pischevoe 614 genome).Conclusion. It is shown that genetically different types of sterility can be used in breeding practice to increase the resistance to abiotic stressors in components of F1 crosses and hybrids.

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RETRACTED: Genetic Dissection of Pre-Flowering Growth and Development in <i>Sorghum bicolor</i> L. Moench under Well-Watered and Drought Stress Conditions

Cited by 7 publications

References 27 publications

Quantitative Trait Loci of Plant Attributes Related to Sorghum Grain Number Determination

Quantitative Trait Loci of Plant Attributes Related to Sorghum Grain Number Determination

Unraveling the genetic complexity underlying sorghum response to water availability

Assessment of drought resistance in sorghum CMS lines based on various sterility sources

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