Year: 1979
Type: article
Abstract: ‘Elberta’ and ‘Lovell’ peach seedlings ( Prunus persica (L.) Batsch) were grown in nutrient solutions for 36 days with 0.8, 2.5, 7.5, 22.5, 67.5, and 202.5 μ M Ca. At 0.8 μ M Ca root growth was reduced, roots became brown, appeared gelatinous, and decayed before any foliar Ca deficiency symptoms developed. The Ca concentration in the external solution increased from 0.8 μ M to 4.5 μ M Ca due to exchange of previously adsorbed Ca and efflux of Ca from the roots. Leaves wilted severely within 24 hrs and plants began to defoliate 5 days after initiating the 0.8 μ M Ca treatment. Calcium deficiency symptoms in 2.5 μ M Ca developed in the leaves as marginal chlorosis followed by necrosis that spread to the leaf apexes. Shoot tips died on some peach seedlings. Roots in 2.5 μ M Ca died back severely and little regrowth occurred. Elongation of main and secondary roots was restricted and roots that developed were swollen and stubby. Reduced root growth was the only indication of Ca deficiency in seedlings grown in 7.5 μ M Ca. No Ca deficiency symptoms appeared on seedlings grown in Ca concentrations greater than 7.5 μ M.
Authors: J. H. Edwards, B. D. Horton
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $3,500
OpenAlex ID: W4386643820