Tolerance of Alfalfa to Manganese Toxicity in Sand Culture

Dessureaux, L.; Ouellette, G. J.

doi:10.4141/cjss58-002

Cited by 16 publications

(5 citation statements)

References 12 publications

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“…Calcium in the plant seems to favour the precipitation and consequent immobilization of excess manganese, and Ouellette and even consider that aluminium is also immobilized by calcium in the case of alfalfa. x\Ithough a strong correlation seems to exist between the higher calcium uptake of the acidic population and tolerance to manganese toxicity, which is in agreement with the findings of other workers (Hewitt, 1952;Taper and Leach, 1957;, calcium level in the plant tissue does not seem to appreciably depress the uptake of manganese by the acidic population and significant difference in manganese uptake between the two populations was noticeable only at the low manganese level. But, as pointed out earlier, aluminium uptake is significantly lower for the acidic population at toxic levels of aluminium in the medium.…”

Section: Discussionsupporting

confidence: 81%

“…The varietal differences with respect to aluminium and manganese toxicity have been studied by Ouellette and Dessureaux (191^8) and Dessureaux and Ouellette (1958) for alfalfa, and by Vose and Gareth Jones (1963) for clover. However, not much attempt has been made to recognize differential response to these two factors by populations within species, and to correlate them with the natural habitat conditions they occupy.…”

Section: Discussionmentioning

confidence: 99%

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NUTRITIONAL REQUIREMENTS OF THE EDAPHIC ECOTYPES IN MELILOTUS ALBA MEDIC.

Ramakrishnan

1968

New Phytologist

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SUMMARYThe differential tolerance of the calcareous and acidic populations of Melilotus alba Medic, to toxic levels of aluminium and manganese was studied since the availability of these micronutrients is very much dependent upon the pH of the soil. The reduction in the growth yield at toxic levels of aluminium was more pronounced in the case of the calcareous population and at such high levels the acidic type had a significantly higher yield. Only the calcareous population showed symptoms of toxicity due to excess aluminium and it consisted of chlorotic spots on the leaves, particularly the lower ones. The growth yield of the calcareous population was markedly affected by toxic manganese levels in the nutrient solution; the plants were stunted in growth with highly chlorotic leaves, the leaf blades were cupped and the margins of the leaves were crinkled. On the other hand, though the growth yield of the acidic type was also reduced to a lesser degree, the plants did not show any visual toxicity symptoms. At toxic levels of manganese and aluminium, the uptake of other nutrients such as calcium, potassium and phosphorus was more adversely affected in the case of the calcareous than the acidic types.It was concluded that the greater tolerance to aluminium and manganese toxicity of the acidic population is partly responsible for its occurrence in acid soils and the absence of the calcareous population from acidic habitats.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

NUTRITIONAL REQUIREMENTS OF THE EDAPHIC ECOTYPES IN MELILOTUS ALBA MEDIC.

Ramakrishnan

1968

New Phytologist

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“…The presence of this variation in a limited selection of lucerne genotypes would suggest that the systematic screening of a larger range of genetic material would provide sufficient genetic variation on which to base a selection programme for Mn tolerance. This confirms that the differential Mn tolerance that occurred in European lucerne cultivars (Dessureaux and Ouellette, 1958) is also present in the cultivars currently grown in Australia.…”

Section: Discussionsupporting

confidence: 75%

“…It is interesting to note that one of the most Mn tolerant crosses produced by Dessureaux and Ouellette (1958) had Flandria as a parent, which is an old Flemish variety.…”

Section: Discussionmentioning

confidence: 99%

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Tolerance to manganese toxicity among cultivars of lucerne (Medicago sativa L.)

1992

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Two sand culture experiments were carried out to identify commercial cultivars of lucerne or alfalfa (Medicago sativa L.) which contain elite, Mn-tolerant plants for use in a selection programme to increase the acid-soil tolerance of this perennial legume. Differences in Mn tolerance, both within and between cultivars, were observed when a range of cultivars were exposed to regular waterings with dilute nutrient solution containing 20 or 25 mg Mn L 1. Under these moderately toxic regimes, the winter dormant cultivars Cimmaron and WL 318 were found to contain elite plants that had greater dry matter yields than their mean cultivar yield under non-toxic Mn conditions. Cultivars which contained elite, Mn-tolerant plants could not be identified by phenotypic characteristics such as their height or their toxicity symptom score, nor by their winter dormancy class. Possible reasons for the occurrence of elite plants in these cultivars are discussed. The elite, high yielding Mn-tolerant plants could not be identified from the other plants within their cultivar population by their Mn toxicity symptoms nor by their height.

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Legumes and Acid Soils

Andrew

1978

Limitations and Potentials for Biological Nitrogen Fixation in the Tropics

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Tolerance of Alfalfa to Manganese Toxicity in Sand Culture

Cited by 16 publications

References 12 publications

NUTRITIONAL REQUIREMENTS OF THE EDAPHIC ECOTYPES IN MELILOTUS ALBA MEDIC.

NUTRITIONAL REQUIREMENTS OF THE EDAPHIC ECOTYPES IN MELILOTUS ALBA MEDIC.

Tolerance to manganese toxicity among cultivars of lucerne (Medicago sativa L.)

Legumes and Acid Soils

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