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- Cyanogenesis (2)
- Genetics (2)
- Sorghum bicolor (L.) Moench (2)
- Apiforol (1)
- Dhurrin (1)
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- Festuca arundinacea. (1)
- Flavonoids (1)
- Hydrocyanic acid (1)
- Leucoanthocyanidin (1)
- Mineral nutrition (1)
- Nutrient concentration (1)
- Nutrient solution (1)
- P-Hydroxybenzaldehyde (1)
- Prussic acid (1)
- Relative growth rate (1)
- Root diameter (1)
- Sorghum bicolor (1)
- Spectrophotometric assay (1)
- Tannins (1)
- Xylem diameter (1)
Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
A Temperature-Sensitive Chlorophyll B-Deficient Mutant Of Sweetclover (Melilotus Alba), John P. Markwell, Stephen J. Danko, Hermann Bauwe, John Osterman, Herman J. Gorz, Francis A. Haskins
A Temperature-Sensitive Chlorophyll B-Deficient Mutant Of Sweetclover (Melilotus Alba), John P. Markwell, Stephen J. Danko, Hermann Bauwe, John Osterman, Herman J. Gorz, Francis A. Haskins
Department of Agronomy and Horticulture: Faculty Publications
The ch4 mutant of sweetclover (Melilotus alba) has previously been demonstrated to be partially deficient in chlorophyll and to have a higher ratio of chlorophyll a to b than normal plants. We were able to substantiate these findings when plants were grown at 23°C and lower (permissive temperatures). However, when grown at 26°C (nonpermissive temperature) the plants produced small yellow leaves which exhibited one-twentieth the chlorophyll content of normal plants. Affected leaves did not increase their chlorophyll content when plants were incubated at permissive temperatures, but leaves which developed at the lower temperature contained increased amounts of chlorophyll. …
Development And Validation Of A Dynamic Model Of Growth And Quality For Cool Season Grasses, W. F. Brown, Lowell E. Moser, Terry J. Klopfenstein
Development And Validation Of A Dynamic Model Of Growth And Quality For Cool Season Grasses, W. F. Brown, Lowell E. Moser, Terry J. Klopfenstein
Department of Agronomy and Horticulture: Faculty Publications
A daily time step model simulating growth and quality of cool season grasses was developed and validated for smooth brome (Bromus inermis Leyss.) under varying environmental and management conditions. Growth predictions are based upon genetic potential, environmental temperature, leaf area, soil moisture, and nitrogen fertilization rate. Daily potential growth rate is a composite of two functions—one relating grass species maximum growth rate to minimum, optimum, and maximum temperatures for plant growth, and another relating daily minimum and maximum air temperatures to time. Multipliers are developed for available leaf area, moisture, and nitrogen, and the minimum of these values modifies …
Inheritance Of Leucoanthocyanidin Content In Sorghum Leaves, Francis A. Haskins, Herman J. Gorz
Inheritance Of Leucoanthocyanidin Content In Sorghum Leaves, Francis A. Haskins, Herman J. Gorz
Department of Agronomy and Horticulture: Faculty Publications
Leucoanthocyanidins (LAC) are structurally related to condensed tannins, a class of compounds having significant effects on the nutritional value of sorghum [Sorghum bicolor (L.) Moench) grain. Little is known of LAC inheritance in sorghum. Mature leaves of 'Colman' and 'White Collier' forage sorghum are high and low, respectively, in LAC content. The objective of the present study was to determine the inheritance of LAC content in reciprocal crosses between these two cultivars, Leaves of field-grown plants were assayed for LAC by a procedure that involved treating methanolic leaf extracts with acid at 50°C to convert the colorless LAC to …
Growth And Magnesium Uptake Of Tall Fescue Lines At High And Low Potassium Levels, J. H. Edwards, Jeffrey F. Pedersen
Growth And Magnesium Uptake Of Tall Fescue Lines At High And Low Potassium Levels, J. H. Edwards, Jeffrey F. Pedersen
Department of Agronomy and Horticulture: Faculty Publications
Five tall fescue (Festuca arundinacea Schreb.) clonal lines with diverse root and xylem diameters were grown in nutrient solutions with magnesium (Mg) concentrations of 42, 125 and 250 µm and potassium K concentrations of 133 and 333 µm. Leaf Mg concentrations increased with increasing Mg rates at both low and high K concentrations. The tall fescue line with the largest root and xylem diameters had low leaf Mg concentrations, indicating a possible increased Mg tetany potential when consumed by cattle. The response of the K/(Mg+Ca) ratio in the plant, an indicator of tetany potential, to varying solution Mg at low …
A Temperature-Sensitive Chlorophyll Β-Deficient Mutant Of Sweetclover (Melilotus Alba), John P. Markwell, Stephen Danko, Hermann Bauwe, John Osterman, Herman Gorz, Francis A. Haskins
A Temperature-Sensitive Chlorophyll Β-Deficient Mutant Of Sweetclover (Melilotus Alba), John P. Markwell, Stephen Danko, Hermann Bauwe, John Osterman, Herman Gorz, Francis A. Haskins
Department of Agronomy and Horticulture: Faculty Publications
The ch4 mutant of sweetclover (Melilotus alba) has previously been demonstrated to be partially deficient in chlorophyll and to have a higher ratio of chlorophyll a to b than normal plants. We were able to substantiate these findings when plants were grown at 23°C and lower (permissive temperatures). However, when grown at 26°C (nonpermissive temperature) the plants produced small yellow leaves which exhibited one- twentieth the chlorophyll content of normal plants. Affected leaves did not increase their chlorophyll content when plants were incubated at permissive temperatures, but leaves which developed at the lower temperature contained increased amounts of …
Evaluation Of Agronomic And Energy Traits Of Wray Sweet Sorghum And The N39 X Wray Hybrid, Max D. Clegg, H. J. Gorz, Jerry W. Maranville, Francis A. Haskins
Evaluation Of Agronomic And Energy Traits Of Wray Sweet Sorghum And The N39 X Wray Hybrid, Max D. Clegg, H. J. Gorz, Jerry W. Maranville, Francis A. Haskins
Department of Agronomy and Horticulture: Faculty Publications
Recent emphasis on energy problems has stimulated efforts to identify crops capable of producing high yields of biomass that can be converted into ethanol. The sorghum [Sorghum bicolor (L.) Moench] crop includes cultivars and hybrids that vary widely in the relative amounts of grain and stalks produced, and also in the sugar content of the stalks. N39 x Wray, a relatively sweet hybrid with good grain potential, and Wray, a cultivar with sweet stalks, were compared for their grain and sugar yields, alcohol production potential, and other related characters. The hybrid produced heavier seeds, more seeds per head, and …
Relationship Between Contents Of Leucoanthocyanidin And Dhurrin In Sorghum Leaves, Francis A. Haskins, Herman J. Gorz
Relationship Between Contents Of Leucoanthocyanidin And Dhurrin In Sorghum Leaves, Francis A. Haskins, Herman J. Gorz
Department of Agronomy and Horticulture: Faculty Publications
Flag leaves of 'Colman' forage sorghum (Sorghum bicolor) contain at least 25 times as much leucoanthocyanidin (LAC) and approximately half as much of the cyanogenic glucoside, dhurrin, as do flag leaves of 'White Collier' forage sorghum. Assays of flag leaves from 119 F2 plants and 11 F, lines from crosses between these two cultivars revealed a statistically significant negative association between levels of LAC and dhurrin. Both LAC and dhurrin are aromatic compounds, and the negative association between the two may be the result of competition for intermediates or products of the aromatic biosynthetic pathway. This rationale appears …
Inheritance Of Dhurrin Content In Mature Sorghum Leaves, Herman J. Gorz, Francis A. Haskins, K. P. Vogel
Inheritance Of Dhurrin Content In Mature Sorghum Leaves, Herman J. Gorz, Francis A. Haskins, K. P. Vogel
Department of Agronomy and Horticulture: Faculty Publications
Seedlings of both KS8 and N32 sorghum [Sorghum bicolor (L.) Moench] were high in dhurrin [p-hydroxy-(S)-mandelonitrile-β-D-glucoside] and thus in hydrocyanic acid potential (HCN-p), but the HCN-p of mature leaves from field-grown plants of KS8 was only about one-tenth as high as that of N32. A study of the inheritance of this large difference between KS8 and N32 revealed that a single major gene pair was responsible. There were no obvious maternal effects and F,'s were generally intermediate in HCN-p level between the two parents, indicating that neither high nor low HCN-p was completely dominant. HCN-p …
Registration Of Np23 And Np24 Sudangrass Germplasms, Herman J. Gorz, Francis A. Haskins, K. P. Vogel
Registration Of Np23 And Np24 Sudangrass Germplasms, Herman J. Gorz, Francis A. Haskins, K. P. Vogel
Department of Agronomy and Horticulture: Faculty Publications
NP23 and NP24 sudangrass [Sorghum bicolor (L.) Moench] (Reg. no. GP-178 and GP-179) populations, developed cooperatively by USDA-ARS and the Nebraska Agricultural Research Division, were released in April 1984. NP23 and NP24 were derived from 'Greenleaf by selection for lower and higher dhurrin content, respectively. Both populations resemble Greenleaf in general appearance with sweet, juicy culms (dull or green midribs), dark green color, late maturity, excellent leafiness and disease resistance, and both tan and purple plant color. Glume colors include black, mahogany, and sienna; pericarp color is brown. Glumes become detached from some of the seeds during threshing. In …
Registration Of Np25 Low-Dhurrin Sudangrass Germplasm, Francis A. Haskins, Herman J. Gorz, S. D. Kindler, S. G. Jensen, A. Sotomayor-Rios
Registration Of Np25 Low-Dhurrin Sudangrass Germplasm, Francis A. Haskins, Herman J. Gorz, S. D. Kindler, S. G. Jensen, A. Sotomayor-Rios
Department of Agronomy and Horticulture: Faculty Publications
NP25 sudangrass [Sorghum bicolor (L.) Moench] (Reg. no. GP-180), a low-dhurrin, random-mating population that carries the ms3 gene for genetic male sterility, was developed cooperatively by USDA-ARS and the Nebraska Agricultural Research Division and released in April 1984. Plants of NP25 are leafy and fine-stemmed, 160 to 170 cm in height with dry stalks (white midrib), tan plant color, sienna glumes, and brown pericarp. NP25 restores fertility to hybrids when crossed to male steriles with A1 cytoplasm.