Work

Effects of PEG-induced Water Stress on Calcium Uptake in Peach Seedlings

Year: 1983

Type: article

Abstract: Polyethylene glycol (PEG-4000)-induced water stress (—0.5 to —7.5 bars) reduced shoot and root growth, water use, and stem 45 Ca in seedlings of peach ( Prunus persica (L.) Batsch). Sucrose feeding through a leaf did not affect stem 45 Ca with or without osmotic stress. 45 Calcium uptake per milligram water used was not different at different solution osmotic potentials. A split-root study, with half the root system receiving 45 Ca and/or PEG, showed that if 45 Ca was supplied only to the water-stressed root half, 45 Ca uptake into stems was low regardless of whether the other root half was stressed or not. Results indicate that reduced stem Ca during water stress is probably not a direct result of decreased root energy needed for active uptake or reduced translocation out of the root. Calcium absorption appeared to be related to the amount of unsuberized root surface available for Ca uptake.

Source: Journal of the American Society for Horticultural Science

DOI: 10.21273/jashs.108.5.737

Authors: Melanie F. Haber, Eric Young, M. Faust

Institutions: Rutgers, The State University of New Jersey, North Carolina State University, United States Department of Agriculture

Language: English

Topic: Plant Stress Responses and Tolerance

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,500