บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Timing of gibberellin4+7 + benzyladenine sprays influences efficacy against foliar chlorosis and plant height in Easter lily

Ranwala, A.P. and Miller, W. B.

HortScience. Vol: 34 Issue: 5 Pages: 902-903.

1999

บทคัดย่อ

Timing of gibberellin (4+7)+ benzyladenine sprays influences efficacy against foliar chlorosis and plant height in Easter lily.

The effects of Promalin [PROM; 100 mg L(-1) each of GA(4+7) and benzyladenine (BA)] sprays on leaf chlorosis and plant height during greenhouse production of ancymidol-treated (two 0.5-mg drenches per plant) Easter lilies (Lilium longiflorum Thunb. 'Nellie White') were investigated. Spraying with PROM at early stages of growth [36 or 55 days after planting (DAP)] completely prevented leaf chlorosis until the puffy bud stage, and plants developed less severe postharvest leaf chlorosis after cold storage at 4 degrees C for 2 weeks. When PROM was sprayed on plants in which leaf chlorosis had already begun (80 DAP), further leaf chlorosis was prevented during the remaining greenhouse phase and during the postharvest phase. PROM caused significant stem elongation (23% to 52% taller than controls) when applied 36 or 55 DAP, but not when applied at 80 DAP or later. The development of flower buds was not affected by PROM treatments. Although PROM sprays applied at 55 DAP or later increased postharvest flower longevity, earlier applications did not.