Genetic and environmental differences in the mineral composition of ryegrass herbage

Butler, G. W.; Barclay, P. C.; Glenday, A. C.

doi:10.1007/bf01377217

Cited by 37 publications

(16 citation statements)

References 20 publications

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“…The differences in observed Na concentration were independent of dry matter yield and similar results were reported by Zurn (1958), Butler et al (1962) and de Loose and Baert (1966). From a physiological point of view.…”

Section: Discussionsupporting

confidence: 90%

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Sodium, potassium and calcium concentrations in varieties of Dactylis glomerata

Mika

1982

Grass and Forage Science

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Twelve varieties of cocksfoot, Dactylis glomerata L., were analysed for three mineral elements (Na, K, Ca) and their dry matter (DM) yields were measured in pot and field trials. Among these characteristics there were strong varietal differences in Na concentration, whereas in other cases the varietal differences were less significant. The concentrations of individual mineral elements were, in most cases, independent of yield and of one another.Parent plants and their clonal derivatives were highly correlated in Na and Ca concentration as well as in DM yield. Tiller size or position on the parental plant had no significant effects on the mineral concentrations or DM yields of clones derived from separated tillers.Within varieties continuous variation was observed for Na concentration and the range of variation increased with increasing mean Na concentration. When plants were grown under different experimental conditions there was a high repeatability in Na concentration within varieties over cuts and years. This result was taken as an indication of a strong genetic basis for Na concentration. The results obtained in this study show that it is possible to develop grass varieties of defined potential Na concentration.

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Section: Discussionsupporting

confidence: 90%

“…Ziirn (1958) showed that the yield potential of grass varieties did not influence Na, K and Ca concentrations. Similarly Butler et al (1962) failed to establish any genetic correlation between growth and mineral concentration. There is evidence that of the major mineral elements Na has the highest degree of heritability (Butler et al, 1962;Mika, 1980).…”

mentioning

confidence: 93%

Sodium, potassium and calcium concentrations in varieties of Dactylis glomerata

Mika

1982

Grass and Forage Science

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“…Higher root CEC increased P uptake when rock phosphate was the sole source of P, presumably through the enhanced solubilisation of rock phosphate as a result of Ca binding in the root (Asher & Ozanne 1961). Negative correlations between CEC and the uptake of potassium (Drake et al 1951) and nitrate and phosphate (Butler et al 1962) have been reported, and the magnitude of the root CEC has been ·considered to be an ecological adaptation by plants (Wacquant 1978).…”

Section: Discussionmentioning

confidence: 99%

Competitive adaptation by plants to nutrient shortage through modification of root growth and surface charge

Mouat¹

1983

New Zealand Journal of Agricultural Research

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Plants respond to lowering Nand P nutntlOn by increasing their relative root growth (lowering S:R ratio) and decreasing their root cation exchange capacity (CEC); the 2 responses were correlated. The smaller the normal CEC of the plant the greater these changes were. Part of the competitive advantage of low CEC plants may lie in their greater increase in relative root growth in response to limiting concentrations of phosphate.

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“…Mattson (1948) and Mattson, Eriksson, Vathras, and Williams (1949) have concluded that differences in root and soil colloid cation cxchange capacities do play a part in controlling the relative rates of uptake of cations and anions of different valencies. Buder, Barclay, and Glenday (1962) found strong correlations between the contents of some mineral constituents in ryegrass herbage and the root cation exchange capacities and have concluded that the rate limiting step in their uptake is dependent upon the root cation exchange capacity. Mouat and Walker (1959) considered that strong competition offered by grasses to white clover for phosphorus and potassium resulted from the grasses having the lower root cation exchange capacity.…”

Section: Introductionmentioning

confidence: 99%

The Uptake of rubidium by the roots of some graminaceous and leguminous plants

Jackman¹

1965

New Zealand Journal of Agricultural Research

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The uptake of rubidium by excised roots of barley, perennial ryegrass, mung beans, and subterranean clover has been studied.All four root systems possess similar double mechanisms. Below about 1.0 mM rubidium concentration, a single mechanism operates according to Michaelis-Menten kinetic theory. Between 1.0 and 2.0 mM rubidium, a second mechanism begins to make an effective contribution to uptake.The capacities (Vmax) of the first mechanism operating below I mM rubidium are much greater for barley and ryegrass roots than for the roots of the two legumes. Differences between the capacities of the second mechanism of the four plants are relatively much smaller.The first mechanism is sensitive to changes in pH and calcium concentration, but the second mechanism is relatively insensitive under some circumstances. It is argued that there is a fundamental difference between the two mechanisms.An experiment using the roots of whole plants showed that the activity of the first mechanism is greatly determined by the previous history of the plant, but this factor has little effect on the activity of the second mechanism.Conditions for the valid comparison of different roots and the relevance of the findings to the problem of inter-plant competition for nUhients in mixed pastures are briefly discussed.

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Genetic and environmental differences in the mineral composition of ryegrass herbage

Cited by 37 publications

References 20 publications

Sodium, potassium and calcium concentrations in varieties of Dactylis glomerata

Sodium, potassium and calcium concentrations in varieties of Dactylis glomerata

Competitive adaptation by plants to nutrient shortage through modification of root growth and surface charge

The Uptake of rubidium by the roots of some graminaceous and leguminous plants

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