ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Influence of end-of-day red and far-red light on potted roses.

Clark, D. G.; Kelly, J. W.; Decoteau, D. R.;

Journal of Environmental Horticulture Year: 1991 Vol: 9 Issue: 3 Pages: 127-130 Ref: 12 ref.

1991

บทคัดย่อ

The effects of end-of-day red and far-red light on postharvest leaf chlorosis of potted roses were investigated. This chlorosis develops in the lower leaves 3-5 days after removal from storage and leads eventually to abscission. Plants of the cultivars Meijikatar (tradename: Orange Sunblaze) and Confection were treated with 30 minutes of red light (600-700 nm) or far-red light (700-780 nm) at the end of each daily photoperiod throughout production. At harvest, plants were placed in storage for 5 days at 16 deg C. Meijikatar plants treated with end-of-day far-red light had more leaf chlorosis than plants treated with end-of-day red light or those which served as controls. Confection plants treated with end-of-day far-red light had more leaf chlorosis than plants treated with end-of-day red light. Meijikatar plants were treated in the greenhouse at the end of each photoperiod with 1 h of incandescent or fluorescent light, with control plants receiving natural greenhouse end-of-day light, and then

placed into storage. Plants treated with end-of-day incandescent light were tallest. After simulated storage, plants treated with end-of-day incandescent light had the most etiolated shoots. Light treatments had no significant effect on the amount of leaf chlorosis 5 days after removal from simulated storage.