Work

540 Influence of Calcium Nutrition on Growth and Tissue Electrolyte Leakage in Carrot (Daucus carota)

Year: 2000

Type: article

Abstract: The influence of calcium (Ca ++ ) nutrition on the growth and root tissue electrolyte leakage (EL) of carrot ( Daucus carota ) was investigated using a hydroponic culture system. Seedlings of `Navajo' carrot were grown for 10 weeks with roots submersed in hydroponic nutrient solutions containing 0, 0.1, 1, 2, 4, or 8 meq/L Ca ++ . The nutrient solution was replenished weekly with its pH maintained at 5.8 for the entire experimental period. The tap root lengths increased as solution Ca ++ concentration increased. The diameter and fresh and dry weights of the tap roots increased as Ca ++ concentration increased up to 4 meq/L, and then decreased at 8 meq/L Ca ++ . The root and petiole concentrations of sugar, potassium, and nitrate were unaffected by changes in nutrient solution Ca ++ levels. The tissue EL, when tested for the stored roots, decreased as solution Ca ++ concentration increased ( r = 0.602). Results of this experiment suggest that calcium nutrition is essential for maintaining cell wall integrity in hydroponically grown carrot roots.

Source: HortScience

DOI: 10.21273/hortsci.35.3.488e

Authors: Keun Ho Cho, Chiwon W. Lee, Larry J. Cihacek, Robert W. Stack, Hoon Kang

Institutions: Cornell University, University of Florida, Institute of Food and Agricultural Sciences, University of California, Davis

Language: English

Topic: Plant nutrient uptake and metabolism

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: gold

Estimated APC paid: $3,000