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1. A review of sweet sorghum as a viable renewable bioenergy crop and its techno-economic analysis

Author:
Rooney, William,   et al.   ; Appiah-Nkansah, Nana Baah; Li, Jun; Wang, Donghai;     Show all 4 Authors
Source:
Renewable energy 2019 v.143 pp. 1121-1132
ISSN:
0960-1481
Subject:
C4 plants; agronomic traits; bagasse; bioethanol; biomass; coproducts; cultivars; energy crops; ethanol; feedstocks; fructose; glucose; heat; hydrolysis; juices; lignocellulose; potential energy; sorghum stalks; starch; sucrose; sweet sorghum
Abstract:
... Sweet sorghum, a C4 plant, is known to be a unique, versatile, and potential energy crop that can be separated into starchy grains, soluble sugar juice, and lignocellulosic biomass. The fermentable sugars in the juice (53–85% sucrose, 9–33% glucose, and 6–21% fructose) can be directly fermented into ethanol. The grain is primarily starch (62–75%), which can be hydrolyzed and fermented into ethanol ...
DOI:
10.1016/j.renene.2019.05.066

2. Qualitative assessment of ‘highly digestible’ protein mutation in hard endosperm sorghum and its functional properties

Author:
Rooney, William L.,   et al.   ; Teferra, Tadesse F.; Amoako, Derrick B.; Awika, Joseph M.;     Show all 4 Authors
Source:
Food chemistry 2019 v.271 pp. 561-569
ISSN:
0308-8146
Subject:
Sorghum (Poaceae); digestible protein; endosperm; heritability; mutants; mutation; nutation; pasting properties; pepsin; protein bodies; scanning electron microscopy; sorghum protein; starch; water solubility
Abstract:
... Sorghum mutants with altered protein body structure have improved protein nutritional quality; however, practical methods to accurately track heritability of the trait are lacking. We evaluated suitability of the in vitro pepsin assay, and a new high-resolution field emission electron microscopy (FE-SEM) method to detect the mutation (HD) in hard-endosperm sorghum; and compared the physicochemical ...
DOI:
10.1016/j.foodchem.2018.08.014

3. Male sterility induction of sorghum using chemical hybridizing agent TFMSA, trifluoromethanesulfonamide

Author:
Rooney, William L.,   et al.   ; Hodnett, George L.;     Show all 2 Author
Source:
Canadian journal of plant science 2018 v.98 no.5 pp. 1102-1108
ISSN:
1918-1833
Subject:
application timing; female fertility; genotype; germination; germplasm; greenhouses; hybrids; leaf emergence; leaves; male sterility; males; panicles; parents; phytotoxicity; seedlings
Abstract:
... In sorghum, male sterility has been induced mainly using mechanical and genetic means with minimal use of chemical methods. Mechanical sterility induction is limited to producing small quantities of seed and genetic male sterility is limited to specific germplasm. An effective chemical hybridizing agent could be used to produce large amounts of seed and would not be limited by genotypes. The chemi ...
DOI:
10.1139/cjps-2017-0327

4. Effects of cytoplasm, male and female parents on biomass productivity in sorghum (Sorghum bicolor L. Moench)

Author:
Rooney, William L.,   et al.   ; Vacek, Luke A.;     Show all 2 Author
Source:
Journal of crop improvement 2018 v.32 no.5 pp. 635-647
ISSN:
1542-7536
Subject:
Sorghum bicolor; agronomic traits; biomass production; cytoplasm; cytoplasmic male sterility; energy; females; genotype; hybrids; males; parents; pollinators; renewable energy sources
Abstract:
... Production of renewable fuel requires biomass sources. To meet this need, energy sorghum was identified as a potential biomass source. Hybrid sorghum development involves the use of cytoplasmic male sterility (CMS) and since there are multiple CMS systems, it is important to determine if any of the CMS systems has an effect on agronomic performance and biomass composition. Energy sorghum hybrids w ...
DOI:
10.1080/15427528.2018.1483458

5. Efficacy of the chemical trifluoromethanesulfonamide as a male gametocide in field-grown sorghum [Sorghum bicolor (L.) Moench]

Author:
Rooney, William L.,   et al.   ; Boerman, Nicholas A.; Hlavinka, Kyle B.; Zhu, Weixi; Dabney, Alan R.; Hodnett, George L.;     Show all 6 Authors
Source:
Euphytica 2019 v.215 no.5 pp. 96
ISSN:
0014-2336
Subject:
Sorghum bicolor; cross pollination; cytoplasmic male sterility; doubled haploids; flowers; forage crops; hybrids; males; panicles; plant breeding; self-pollination; temperate zones
Abstract:
... Sorghum bicolor (L. Moench) is a cereal grain and forage crop that is grown across tropical and temperate regions of the world. Sorghum has a complete flower, resulting in self-pollination as the primary form of reproduction, but it is also grown commercially as a hybrid. Consequently, methods of cross-pollination for both breeding and hybrid seed production are important. In sorghum breeding, cur ...
DOI:
10.1007/s10681-019-2417-2

6. Ethanol production from mixtures of sweet sorghum juice and sorghum starch using very high gravity fermentation with urea supplementation

Author:
Rooney, William,   et al.   ; Appiah-Nkansah, Nana Baah; Zhang, Ke; Wang, Donghai;     Show all 4 Authors
Source:
Industrial crops and products 2018 v.111 pp. 247-253
ISSN:
0926-6690
Subject:
amino nitrogen; analysis of variance; ethanol; ethanol production; fermentation; grain sorghum; juices; mash; nitrogen; saccharification; sorghum flour; starch; sugars; sweet sorghum; synergism; temperature; urea; yeasts
Abstract:
... The objective of this research was to enhance the production of ethanol from grain sorghum flour and sweet sorghum juice using very high gravity (VHG) fermentation. Various amounts of grain sorghum flour were combined with different concentrations of sweet sorghum juice to form (≈33g/100mL) mashes. Mashes were fermented to produce ethanol with and without urea supplementation via simultaneous sacc ...
DOI:
10.1016/j.indcrop.2017.10.028

7. Assessment of Stalk Properties to Predict Juice Yield in Sorghum

Author:
Rooney, William L.,   et al.   ; Carvalho, Geraldo, Jr;     Show all 2 Author
Source:
BioEnergy research 2017 v.10 no.3 pp. 657-670
ISSN:
1939-1234
Subject:
Sorghum (Poaceae); agronomic traits; biomass; breeding programs; economic sustainability; equations; ethanol; ethanol production; feedstocks; ideotypes; juices; models; phenotype; photosensitivity; prediction; sweet sorghum
Abstract:
... Sweet sorghum is an outstanding feedstock choice for bioethanol production, but the gap between theoretical and commercial ethanol yields must be reduced to improve economic viability. Extractable juice yield is a primary limiting factor for higher ethanol yield, but current phenotyping techniques to measure juice yield in sorghum can be laborious. Therefore, alternative approaches to measuring ju ...
DOI:
10.1007/s12155-017-9829-4

8. High throughput phenotyping of morpho-anatomical stem properties using X-ray computed tomography in sorghum

Author:
Rooney, William L.,   et al.   ; Gomez, Francisco E.; Carvalho, Geraldo, Jr.; Shi, Fuhao; Muliana, Anastasia H.;     Show all 5 Authors
Source:
Plant methods 2018 v.14 no.1 pp. 59
ISSN:
1746-4811
Subject:
Sorghum bicolor; bioenergy; breeding programs; computed tomography; forage; genotype; grasses; image analysis; information processing; juices; phenotype; phenotypic variation; prediction; stems
Abstract:
... BACKGROUND: In bioenergy/forage sorghum, morpho-anatomical stem properties are major components affecting standability and juice yield. However, phenotyping these traits is low-throughput, and has been restricted by the lack of a high-throughput phenotyping platforms that can collect both morphological and anatomical stem properties. X-ray computed tomography (CT) offers a potential solution, but ...
DOI:
10.1186/s13007-018-0326-3

9. Gene Flow and its Consequences in Sorghum spp.

Author:
Rooney, William,   et al.   ; Ohadi, Sara; Hodnett, George; Bagavathiannan, Muthukumar;     Show all 4 Authors
Source:
Critical reviews in plant sciences 2017 v.36 no.5-6 pp. 367-385
ISSN:
1549-7836
Subject:
Sorghum bicolor subsp. drummondii; Sorghum halepense; biotic stress; crops; gene flow; genes; introgression; progeny; risk; transgenesis; weeds; wild relatives
Abstract:
... Gene flow between crops and their weedy or wild relatives can be problematic in modern agricultural systems, especially if it endows novel adaptive genes that confer tolerance to abiotic and biotic stresses. Alternatively, gene flow from weedy relatives to domesticated crops may facilitate ferality through introgression of weedy characteristics in the progeny. Cultivated sorghum (Sorghum bicolor), ...
DOI:
10.1080/07352689.2018.1446813
Chorus Open Access:
10.1080/07352689.2018.1446813

10. Identifying Morphological and Mechanical Traits Associated with Stem Lodging in Bioenergy Sorghum (Sorghum bicolor)

Author:
Rooney, William L.,   et al.   ; Gomez, Francisco E.; Muliana, Anastasia H.; Niklas, Karl J.;     Show all 4 Authors
Source:
BioEnergy research 2017 v.10 no.3 pp. 635-647
ISSN:
1939-1234
Subject:
Sorghum bicolor; bioenergy; biomechanics; correlation; environmental factors; genotype; internodes; lodging; lodging resistance; morphometry; phenotype; selection methods
Abstract:
... Stem lodging in Sorghum is a major agronomic problem that has far-reaching economic consequences. More rapid and reliable advances in stem lodging resistance could be achieved through development of selective breeding tools that are not dependent on post hoc data or dependent on abiotic or biotic environmental factors. Our objective was to use sorghum to examine how mechanical stability is achieve ...
DOI:
10.1007/s12155-017-9826-7

11. Dynamics of biomass partitioning, stem gene expression, cell wall biosynthesis, and sucrose accumulation during development of Sorghum bicolor

Author:
Rooney, William,   et al.   ; McKinley, Brian; Wilkerson, Curtis; Mullet, John;     Show all 4 Authors
Source:
The plant journal 2016 v.88 no.4 pp. 662-680
ISSN:
0960-7412
Subject:
Sorghum bicolor; beta-fructofuranosidase; biofuels; biomass; biosynthesis; cell walls; cellulose; dry matter partitioning; engineering; expansins; flowering; gene expression; gene expression regulation; genes; inflorescences; internodes; leaves; lignin; sequence analysis; stem cells; stem elongation; sucrose; sucrose synthase; sweet sorghum; tillers; transcription (genetics); vacuoles; xyloglucan:xyloglucosyl transferase
Abstract:
... Biomass accumulated preferentially in leaves of the sweet sorghum Della until floral initiation, then stems until anthesis, followed by panicles until grain maturity, and apical tillers. Sorghum stem RNA‐seq transcriptome profiles and composition data were collected for approximately 100 days of development beginning at floral initiation. The analysis identified >200 differentially expressed genes ...
DOI:
10.1111/tpj.13269

12. Model study on extraction of fermentable sugars and nonstructural carbohydrate from sweet sorghum using diffusion process

Author:
Rooney, William,   et al.   ; Appiah-Nkansah, Nana Baah; Zhang, Ke; Wang, Donghai;     Show all 4 Authors
Source:
Industrial crops and products 2016 v.83 pp. 654-662
ISSN:
0926-6690
Subject:
biomass; ethanol; ethanol production; grain sorghum; industry; inflorescences; processing technology; response surface methodology; starch granules; sugarcane; sugars; sweet sorghum; temperature
Abstract:
... Sweet sorghum stores a high concentration of soluble sugars in its stalk and produces grain in the panicle. This grain represents a significant amount of starch. The ethanol industry currently uses sugarcane processing methods for sweet sorghum; however, sweet sorghum differs from sugarcane in that sweet sorghum produces significant quantities of grain which is predominantly starch. The objective ...
DOI:
10.1016/j.indcrop.2015.12.056

13. High-parent heterosis for biomass yield in photoperiod-sensitive sorghum hybrids

Author:
Rooney, William L.,   et al.   ; Packer, Daniel J.;     Show all 2 Author
Source:
Field crops research 2014 v.167 pp. 153-158
ISSN:
0378-4290
Subject:
biomass production; crop yield; energy crops; grain sorghum; heterosis; hybrids; parents; pollinators; specific combining ability; stems
Abstract:
... Biomass sorghums are being developed as a dedicated energy crop. These sorghums are managed to maximize biomass yields and are tall (3.5–5m) with dry, pithy stems. To facilitate seed production, they are produced as hybrids using grain sorghum seed parents. Besides facilitating seed production, these hybrids may provide high-parent heterosis for improved biomass yields. To measure potential hetero ...
DOI:
10.1016/j.fcr.2014.07.015

14. Accumulation of Biomass and Compositional Change Over the Growth Season for Six Photoperiod Sorghum Lines

Author:
Rooney, William L.,   et al.   ; Hoffmann, Leo, Jr.;     Show all 2 Author
Source:
BioEnergy research 2014 v.7 no.3 pp. 811-815
ISSN:
1939-1234
Subject:
Sorghum bicolor; autumn; biomass production; cellulose; crop yield; drought; genotype; growing season; harvest date; hybrids; lignin; photoperiod; planting; Texas
Abstract:
... Biomass sorghums [Sorghum bicolor (L.) Moench] are short-day photoperiod sensitive (PS) types, meaning that the crop will grow vegetatively late into the fall season in subtropical and temperate environments. This feature results in high biomass yield potential and mitigates drought susceptibility. The objective of this study is to assess biomass growth patterns and associated changes in compositi ...
DOI:
10.1007/s12155-013-9405-5

15. Agronomic performance and heterosis of specialty grain sorghum hybrids with a black pericarp

Author:
Rooney, William L.,   et al.   ; Hayes, Chad M.;     Show all 2 Author
Source:
Euphytica 2014 v.196 no.3 pp. 459-466
ISSN:
0014-2336
Subject:
agronomic traits; food grains; foods; genotype-environment interaction; grain sorghum; grain yield; heterosis; hybrids; markets; pericarp; phenol; proanthocyanidins; tannins
Abstract:
... Specialty food markets are continually interested in food grains with unique attributes and qualities. The objective of this study was to evaluate the relative effects of genotype and environment on the agronomic performance of six black grain sorghum hybrids developed to produce high concentrations of total phenols, condensed tannins and 3-deoxyanthocyanin. These hybrids and a commercial grain so ...
DOI:
10.1007/s10681-013-1047-3

16. Direct bioconversion of sorghum extract sugars to free fatty acids using metabolically engineered Escherichia coli strains: Value addition to the sorghum bioenergy crop

Author:
Rooney, William,   et al.   ; Bule, Mahesh; Luo, Yane; Bennett, George; Karanjikar, Mukund; San, Ka-Yiu;     Show all 6 Authors
Source:
Biomass and bioenergy 2016 v.93 pp. 217-226
ISSN:
0961-9534
Subject:
Escherichia coli; Ricinus communis; biofuels; biotransformation; carbon; energy; energy crops; free fatty acids; genes; genetic engineering; metabolic engineering; mutants; pH; plasmids; production costs; sucrose
Abstract:
... The unprecedented challenge of meeting the energy demand of growing economies has increased the need to produce hydrocarbon fuels using renewable sources. Among different platforms being researched these days, hydrocarbon biofuel and chemical production from free fatty acids (FFAs) have gained a lot of attention. The current study reports on value addition to sorghum energy crop through utilizatio ...
DOI:
10.1016/j.biombioe.2016.07.020
CHORUS:
10.1016/j.biombioe.2016.07.020

17. Genetic dissection of sorghum grain quality traits using diverse and segregating populations

Author:
Rooney, William L.,   et al.   ; Boyles, Richard E.; Pfeiffer, Brian K.; Cooper, Elizabeth A.; Rauh, Bradley L.; Zielinski, Kelsey J.; Myers, Matthew T.; Brenton, Zachary; Kresovich, Stephen;     Show all 9 Authors
Source:
Theoretical and applied genetics 2017 v.130 no.4 pp. 697-716
ISSN:
0040-5752
Subject:
Sorghum bicolor; amylose; biosynthesis; chromosome mapping; coastal plains; corn; crops; crude protein; energy; fuels; genes; genetic markers; genetic variation; genotype; genotyping; grain quality; grain sorghum; inbred lines; lipid content; lipids; loci; phenotypic variation; plant breeders; quantitative trait loci; small cereal grains
Abstract:
... KEY MESSAGE: Coordinated association and linkage mapping identified 25 grain quality QTLs in multiple environments, and fine mapping of the Wx locus supports the use of high-density genetic markers in linkage mapping. There is a wide range of end-use products made from cereal grains, and these products often demand different grain characteristics. Fortunately, cereal crop species including sorghum ...
DOI:
10.1007/s00122-016-2844-6
PubMed:
28028582
PubMed Central:
PMC5360839

18. Genotype and Environment Effects on the Popping Characteristics of Grain Sorghum

Author:
Rooney, William L.,   et al.   ; Rooney, Travis E.;     Show all 2 Author
Source:
Journal of crop improvement 2013 v.27 no.4 pp. 460-468
ISSN:
1542-7536
Subject:
Sorghum bicolor; color; fruits; genotype; genotype-environment interaction; grain sorghum; popcorn; popping; Texas
Abstract:
... Grain sorghum (Sorghum bicolor L. Moench) is one of several caryopses that can be popped, but there is little information on the relative popping capacity of different sorghum varieties. The objectives of this study were to assess the variation among sorghum genotypes for popping and to determine the relative effects of genotype and environment on those traits. Eight grain sorghum entries differin ...
DOI:
10.1080/15427528.2013.794181

19. Effect of humidity on intergeneric pollinations of iap (Inhibition of Alien Pollen) sorghum [Sorghum bicolor (L.) Moench]

Author:
Rooney, William L.,   et al.   ; Gill, John R.; Klein, Patricia E.;     Show all 3 Authors
Source:
Euphytica 2014 v.198 no.3 pp. 381-387
ISSN:
0014-2336
Subject:
Sorghum bicolor; adhesion; alleles; corn; florets; growth chambers; humidity; phenotype; plant ovary; pollen; pollen tubes; pollination; progeny; reciprocal crosses; stigma
Abstract:
... The production of interspecific or intergeneric progeny involving Sorghum spp. is greatly enhanced by the presence of the iap (Inhibition of Alien Pollen) allele in sorghum [Sorghum bicolor (L.) Moench]. Variation in the expressivity of the iap phenotype has been observed in previous studies, leading to the hypothesis that the humidity during pollination is affecting the degree of alien pollen adh ...
DOI:
10.1007/s10681-014-1113-5

20. Reaction of Sorghum Lines to Zonate Leaf Spot and Rough Leaf Spot

Author:
Rooney, William L.,   et al.   ; Prom, Louis K.; Isakeit, Thomas; Cuevas, Hugo; Perumal, Ramasamy; Magill, Clint;     Show all 6 Authors
Source:
Plant health progress 2015 v.16 no.4 pp. 230-234
ISSN:
1535-1025
Subject:
Sorghum (Poaceae); breeding programs; genes; growing season; leaf spot; rain; zonate leaf spot; Texas
Abstract:
... Abundant, frequent rains along with humid and cloudy conditions during the early part of the 2015 growing season provided conducive conditions for an unusually severe outbreak of zonate leaf spot and rough leaf spot in a block of sorghum lines at the Texas A&M AgriLife Research Farm, Burleson County, near College Station, Texas. This afforded the opportunity to evaluate these lines for reaction to ...
DOI:
10.1094/PHP-RS-15-0040