Increased manganese content of barley seeds can increase grain yield in manganese-deficient conditions
1991
Longnecker, N.E. | Marcar, N.E. | Graham, R.D. (Waite Agricultural Research Inst., Glen Osmond (Australia). Agronomy Dept.)
Galleon barley with naturally low (0.08-0.26 microg per seed), medium (0.34-0.62 microg per seed) and high (0.74-1.20 microg per seed) Mn in the seed was grown in field, glasshouse and growth cabinet experiments. In 2 experiments, seeds were soaked in MnSO4 and had Mn contents of approximately 50 microg per seed. High Mn seed (natural or by soaking) increased grain yield under Mn-deficient conditions. Under both Mn-deficient and Mn-supplemented conditions, high Mn seed gave higher yields than low Mn seed. High Mn seed increased root dry weight, Mn content of both roots and shoots, shoot dry weight, number of early tillers, plant survival and number of grains per plant, but had no effect on weight per seed. Maximum grain yield was obtained by sowing seed with a high Mn content and applying Mn fertilizer: neither treatment corrected Mn deficiency on its own.
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