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Manganese Toxicity Effects on Leaf Cell Multiplication and Expansion and on Dry Matter Yield of Sugar Beets 1
Author(s) -
Terry N.,
Evans P. S.,
Thomas D. E.
Publication year - 1975
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1975.0011183x001500020019x
Subject(s) - dry matter , dry weight , manganese , biology , sugar , sugar beet , liter , horticulture , volume (thermodynamics) , botany , toxicity , zoology , chemistry , food science , physics , organic chemistry , quantum mechanics , endocrinology
Sugar beet ( Beta vulgaris ‘F58‐554HI’) plants were cultured hydroponically (pH 6.0) for 3 weeks in a greenhouse with 10 concentrations of Mn in culture solutions; 0.44, 4, 8, 16, 32, 64, 128, 256, 550, and 1,000 mg Mn/liter. Dry weights of roots and leaves, numbers of cells, and mean call volume/leaf were unchanged with increases in Mn from 0.44 to 16 mg/liter in the culture solution or with tissue Mn up to about 5,000 mg/kg dry matter. With further increase to 30 or 40 mg Mn/liter in the culture solution dry matter yields were diminished by 50%, with tissue Mn concentrations of about 20,000 mg/kg. Manganese toxicity reduced the numbers of cells/leaf and the average leaf cell volume and produced smaller leaf and root dry weights.