Effect: of Low Ternperature and Growth Regulators on Germination of Seeds of Tokay Grapes

Tokay葡萄種子休眠的研究

Tokay葡萄種子休眠中對於低溫的需要曾予研究。在0°C下，經3天可以使少數種子停止休眠而萌芽；但最適宜的是經過63天。長時間或短時間的浸冷水（20°C），或短時間的浸熱水（60°C），都不能取代冷凍的效果。用Benzyladenine（BA）來處理時，將濃度提高到8,000 ppm仍不能促進種子萌芽；然用8,000 ppm的Potassium Gibberellate（GA）卻可完全取代冷凍的效果。將種皮擦傷，GA的最適濃度降到10 ppm。

The low-temperature requirement for germination of 'Tokay' grape seeds was studied. As little as 3 days of 0℃ induced termination of rest in some seeds; optimum germination occured lafter 63 days at 0℃. Neither long-term nor short-term soaking with cold water, nor short-term soaking with warm water, substituted for cold. Benzyladenine up to 8,000 ppm did not obviate the cold requirement. At 8,000 ppm, the potassium salt of gibberellic acid (GA) completely raplaced the cold requirement; at 10 ppm it terminated rest in some of the seeds. When scarified seeds were used, optimum GA concentration for germination was 10 ppm.