Work

Peroxidase Activity in Onion Bulbs of Long and Short Dormancy1

Year: 1972

Type: article

Abstract: The peroxidase activity in bulbs of 3 onion ( Allium cepa L.) genotypes known to differ in their dormancy characteristics was investigated at 2 stages of bulb development. Peroxidase activity was estimated by the oxidation of p-phenylenediamine, and peroxidase isozymes were studied by acrylamide gel electrophoresis. The peroxidase activity of all 3 genotypes was the same in young bulbs (1.5 – 2 cm, diam), but in mature bulbs peroxidase activity differed with genotype. Bulbs with short dormancy had higher activity, and a greater no. of isozymes than bulbs with long dormancy. A commercial preharvest spray of maleic hydrazide (MH) did not affect peroxidase activity in bulbs of either dormancy type.

Source: HortScience

DOI: 10.21273/hortsci.7.6.553

Authors: B. W. Poovaiah, Grant Vest, H. P. Rasmussen

Institution: Michigan State University

Language: English

Topic: Postharvest Quality and Shelf Life Management

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: hybrid

Estimated APC paid: $3,000