The reaction of lucerne seedlings to high concentrations of manganese

Dessureaux, L.

doi:10.1007/bf01394107

Cited by 6 publications

(1 citation statement)

References 6 publications

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“…Increased temperature clearly resulted in decreased plant sensitivity to high levels of Mn but this was not a consequence oi decreased Mn concentration in the leaf tissue. Studies with other plant types have shown higher Mn content in shoots (Dessureaux, 1960;Single and Bird, 1958;Williams and Vlamis, 1957) and increased tolerance to high Mn (Lohnis, 1951, Heenan andCarter, 1977) with increased temperature. However, in this study the magnitude of the increased Mn tissue concentrations in early growth, which accompanied increased tolerance, appears unusual.…”

Section: Mn Accumulationmentioning

confidence: 99%

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹

Rufty¹,

Miner²,

Raper

1979

Agronomy Journal

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Symptoms of Mn toxicity in tobacco (Nicotiana tabacum L.) are often observed in the mountain region of North Carolina at soil acidity and soil test levels of Mn which do not produce toxicity in the piedmont. Although genotypic differences between tobacco types grown in the regions may contribute to the differential response, variations in temperature between the regions may also be involved. To investigate the effects of temperature on plant growth and Mn tolerance, tobacco plants of a prevalent cultivar (‘Coker 347’) for the piedmont region were grown in sand culture at day/night temperatures of 22/18, 26/22, and 30/26 C. Manganese was applied daily at rates of 10, 20, 40, 80, and 120 mg/liter in a complete nutrient solution. Plants were sampled weekly during a 6‐week growth period and evaluated for visual toxicity symptoms, dry weight. Mn concentration, relative growth rate (RGR), and relative accumulation rate (RAR) of Mn. Plant tolerance to high rates of applied Mn increased with increasing temperature despite significantly greater tissue concentrations of Mn during early growth. Tissue levels of Mn in leaves associated with the appearance of visual toxicity symptoms were 700 to 1,200 mg/kg dry wt at 22/18 C, 2,000 to 3,500 mg/kg at 26/22 C, and 5,000 to 8,000 mg/kg at 30/26 C. Mn toxicity symptoms were more severe in immature leaves and often decreased as the leaves matured even though the concentration of Mn in the leaves increased. The RGR of leaves during the exponential growth phase increased with increasing temperatures at each Mn rate, but the RAR of Mn was unaffected by either temperature or applied Mn rate. It is proposed that the increased tolerance to high levels of tissue Mn by plants grown in warm temperatures is associated with more rapid rates of leaf expansion accompanied by increased vaculor capacity for disposal of accumulated Mn.

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Section: Mn Accumulationmentioning

confidence: 99%

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹

Rufty¹,

Miner²,

Raper

1979

Agronomy Journal

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Allgemeine Pflanzenpathologie

Rohringer¹,

Köhler²,

Stapp³

et al. 1963

Bericht Über Das Jahr 1962

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The interaction of manganese and calcium on nodulation and growth in varieties oftrifolium repens

Vose

Jones

1963

Plant Soil

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INTRODUCTIONOne of the problems inherent in reclaiming hill areas in Britain by establishing improved grassland is to obtain an adequate growth of a legume. These areas comprise soils of low pH, due to high rainfall giving rise to leaching of the soil and consequent low base status.The factors comprising the "soil acidity complex" are now well known and are primarily a deficiency of calcium with toxic levels of manganese and aluminium (Hewitt 7). There is evidence that different species respond to these factors in varying degrees and legumes appear to be particularly susceptible to manganese toxicity e.g. Phaseolus vulgaris (Lahnis 11) Medicago sativa (Kippsl0; Morris and Pierre l4; Ouellette and Dessureaux 17) and Tri/olium subterraneum (Millikan l3). Calcium requirement apparently also varies within populations of legume species, as B r a dshaw and Snaydon 2 found that an upland population of T.repens grew better at a low level of calcium than did a population from a chalk downland, while Vose and Koontz 28 found that S. 100 white clover took up much less calcium from a low calcium soil than did Dutch or Ladino.Although much work has been carried out on the interrelationships of the mineral factors of acid soils, surprisingly little attention has been given to their possible influence on Rhizobium and on nodulation. Thornton 25 has reported on the high proportion of ineffective Rhizobium strains isolated from clover plants growing * Present address: College of Agriculture, Seoui National University, Suwon, Korea. Preliminary experimentEleven varieties of white clover, Tri/olium repem (Table I) were grown in low-, medium-, and high-calcium soils of pl-I 5.1, 6.2, and 7.2 and with exchangeable calcium content of 92, 166, and 284 mg per 100 g respectively. Replicated lots of ten plants were grown in 18-cm clay pots painted internally with bitumen. The seedlings were germinated in sand and were trans- Table according to calcium content when grown on the low-calcium soil and it is apparent that the varieties do not rank in the same order for all three soils, and further that some varieties actually have their highest calcium content when grown on the low-calcium soil. Actual yields are not given as the varieties comprise a number of directly incomparable growth habits, but the yield of each variety is expressed relative to its yield in the medium-calcium soil taken as 100. On this basis all varieties give their lowest yield on the low-calcium soil, and the majority have the highest yield on the medium-calcium soil, with three varieties yielding most on the high-calcium soil. The manganese content of the varieties shows in general a very slight increase between the high-and medium-calcium soils, but material grown on the low-calcium soil shows a vast increase in manganese content. Thus S. 100 Nomark had a manganese content of 20 ppm on the medium and high calcium soils and a content of 1200 ppm on the low calcium soil. Varieties which have the highest manganese content when grown on the low-calcium soil have some ...

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The reaction of lucerne seedlings to high concentrations of manganese

Cited by 6 publications

References 6 publications

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹

Allgemeine Pflanzenpathologie

The interaction of manganese and calcium on nodulation and growth in varieties oftrifolium repens

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The reaction of lucerne seedlings to high concentrations of manganese

Cited by 6 publications

References 6 publications

Temperature Effects on Growth and Manganese Tolerance in Tobacco1

Temperature Effects on Growth and Manganese Tolerance in Tobacco1

Allgemeine Pflanzenpathologie

The interaction of manganese and calcium on nodulation and growth in varieties oftrifolium repens

Contact Info

Product

Resources

About

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹

Temperature Effects on Growth and Manganese Tolerance in Tobacco¹