บทคัดย่องานวิจัย

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The use of lysophosphatidylethanolamine (LPE), a natural lipid, to enhance the opening and retention of flowers on bedding plants experiencing water stress during retail sales

A. Snider, J.P. Palta and T. Peoples

ISHS Acta Horticulturae 628: 2003. pp. 849-853.

2003

บทคัดย่อ

The Use of Lysophosphatidylethanolamine (LPE) , A natural Lipid, Toenhance the Opening and Retention of Flowers on Bedding Plants Experiencing Water Streess During Retail Sales

Spring bedding plants sold at retail outlets are regularly exposed to lessthan-ideal growing conditions. These plants are of ten not watered enough to maintain the health of the plant. They are subjected to periods of drought stress, are watered excessively, and the drought cycle is repeated. The marketability of these bedding plants is seriously compromised by these cycles of water stress. Water stress reduces the opening and retention of flowers. We investigated the influence of a spray application of LPE on the marketable quality of bedding plants subjected to cycles of water stress. The number of flowers per plant was used as an indicator of marketable quality. Six-week okd seedligns of Super Elfin Rose and Dazzler Salmon impatiens were transplanted into 12-04 cell packs. After one week the plants were sprayed to drip with a solution containing LPE at the rates of 100 and 200 ppm LPE. The plants were given 14 hours of fluorescent light at room temperature. The impatiens were put under drought stress by withholding water, and allowed to dry to wilt between waterings. The number of open flowers per four-pack was recorded daily. Following a water stress cycle, LPE sprayed plants consistently had a greater number of open flowers as compared to control. With subsequent stress cycles, the differences between LPE and control became larger and more significant. In most cases LPE treated plants had more than two times the number of open flowers per four-pack and recovered more quickly from periods of stress than did those in the control.These results show that LPE has the potential to enhance the opening and retention of flowers on bedding plants undergoing water stress cycles during marketing.