Sucrose Production as Affected by Root Yield and Sucrose Concentration of Sugarbeets

Carter, J.N.

doi:10.5274/jsbr.24.1.14

Cited by 9 publications

(2 citation statements)

References 14 publications

(8 reference statements)

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“…Both polarimetry and refractometry are available for analyses of unprocessed beets; however, water content in fresh sugar beet roots (75−80%) has a major influence on sucrose content as well as root yield. Sucrose content in fresh roots has been consistently (negatively) correlated with root yield across elite breeding lines and over multiple environments ( − ); however, this relationship has been suggested to be a pseudocorrelation (). If so, breeding and selection methods geared toward analyses of sucrose and non-sucrose dry matter may be expected to reveal additional opportunities for genetic gains, as well as perhaps assist in the return to elite breeding line status from crosses with wild and unadapted germplasm.…”

Section: Introductionmentioning

confidence: 99%

Fluorometric Sucrose Evaluation for Sugar Beet

Trebbi

McGrath

2004

J. Agric. Food Chem.

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Sucrose is the economic product from sugar beet. Disease resistance is often available in low-sucrose genotypes and, prior to the deployment of such novel genes as available into the cultivated spectrum, selection for increased sucrose content is required during introgression. The objective of this work was to evaluate a relatively rapid and inexpensive enzymatic-fluorometric microtiter plate assay for sucrose quantification in sugar beet root dry matter, both for progeny testing in the greenhouse and for evaluation of field-grown mother roots. As determined using HPLC, sucrose content in diverse populations of sugar and table beet assayed over various developmental stages ranged from 0.213 to 2.416 mmol g(-1) of dry matter, and these values were used as references for both refractometry and enzymatic-fluorometric assay. As expected, refractometric analysis generally overestimated sucrose content. Enzymatic-fluorometric analyses were reasonably well correlated with HPLC results for young greenhouse-grown root tissues (R2 = 0.976), and less so with older field-grown roots (R2 = 0.605), for unknown reasons. Enzymatic-fluorometric assays may be best deployed for progeny testing of young seedlings.

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Section: Introductionmentioning

confidence: 99%

Fluorometric Sucrose Evaluation for Sugar Beet

Trebbi

McGrath

2004

J. Agric. Food Chem.

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“…Heterosis breeding in sugar beet is challenged by the inverse relationship between root size and sugar content. Many studies have shown that varieties with a high root yield have low sucrose concentrations [ 58 – 60 ]. An ideal sugar beet variety is one that combines high root yield with high sucrose concentration (plus other characteristics such as low levels of impurities and strong abiotic and biotic stress tolerance).…”

Section: Discussionmentioning

confidence: 99%

Hybridity has a greater effect than paternal genome dosage on heterosis in sugar beet (Beta vulgaris)

et al. 2018

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BackgroundThe phenomenon of heterosis is critical to plant breeding and agricultural productivity. Heterosis occurs when F1 hybrid offspring display quantitative improvements in traits to levels that do not occur in the parents. Increasing the genome dosage (i.e. ploidy level) of F1 offspring can contribute to heterosis effects. Sugar beet (Beta vulgaris) provides a model for investigating the relative effects of genetic hybridity and genome dosage on heterosis. Sugar beet lines of different ploidy levels were crossed to generate diploid and triploid F1 offspring to investigate the effect of; (1) paternal genome dosage increase on F1 heterosis, and; (2) homozygous versus heterozygous tetraploid male parents on F1 triploid heterosis. A range of traits of agronomic and commercial importance were analyzed for the extent of heterosis effects observed in the F1 offspring.ResultsComparisons of parental lines to diploid (EA, EB) and triploid (EAA, EBB) F1 hybrids for total yield, root yield, and sugar yield indicated that there was no effect of paternal genome dosage increases on heterosis levels, indicating that hybridity is the main contributor to the heterosis levels observed. For all traits measured (apart from seed viability), F1 triploid hybrids derived from heterozygous tetraploid male parents displayed equivalent levels of heterosis as F1 triploid hybrids generated with homozygous tetraploid male parents, suggesting that heterosis gains in F1 triploids do not arise by simply increasing the extent of multi-locus heterozygosity in sugar beet F1 offspring.ConclusionsOverall, our study indicates that; (1) increasing the paternal genome dosage does not enhance heterosis in F1 hybrids, and; (2) increasing multi-locus heterozygosity using highly heterozygous paternal genomes to generate F1 triploid hybrids does not enhance heterosis. Our findings have implications for the design of future F1 hybrid improvement programs for sugar beet.Electronic supplementary materialThe online version of this article (10.1186/s12870-018-1338-x) contains supplementary material, which is available to authorized users.

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Sugar Beet Breeding

McGrath

Panella

2018

Plant Breeding Reviews

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Sucrose Production as Affected by Root Yield and Sucrose Concentration of Sugarbeets

Cited by 9 publications

References 14 publications

Fluorometric Sucrose Evaluation for Sugar Beet

Fluorometric Sucrose Evaluation for Sugar Beet

Hybridity has a greater effect than paternal genome dosage on heterosis in sugar beet (Beta vulgaris)

Sugar Beet Breeding

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