Alternative treatments for the conservation of castor seeds (Ricinus communis L.)

ABSTRACT The aim of this study was to evaluate the effects of alternative treatments and storage environment on the physiological and sanitary qualities of castor seeds. Treatments were: derosal, vitavax-thiram, sodium benzoate, potassium sorbate, trichodermil SP, rosemary, garlic, cinnamon, Indian clove and control treatment. The seeds were subjected to storage in laboratory and in a cold chamber for 12 months. Castor seeds chemically treated with derosal and vitavax-thiram showed physiological and sanitary quality superior to those of seeds treated with alternative products and without treatment at 12 months of storage. Castor seeds stored in laboratory, for a period longer than 8 months, must be treated with traditional chemical fungicides. If the seeds are stored in a cold chamber, the maintenance of their germination and vigor above 80% does not depend on the used fungicide treatment. The most promising alternative fungicides were trichodermil, potassium sorbate and garlic, especially the first product.

摘要
本研究旨在探究不同处理方式与贮藏环境对蓖麻种子生理及卫生品质的影响。供试处理包括：代森锰锌（derosal）、萎锈灵-福美双（vitavax-thiram）、苯甲酸钠（sodium benzoate）、山梨酸钾（potassium sorbate）、木霉菌SP（trichodermil SP）、迷迭香（rosemary）、大蒜（garlic）、肉桂（cinnamon）、印度丁香（Indian clove）以及对照处理。将种子分别置于实验室环境与冷藏柜中贮藏12个月。
贮藏12个月后，经代森锰锌与萎锈灵-福美双化学处理的蓖麻种子，其生理与卫生品质优于经其他替代产品处理及未处理的种子。若在实验室环境中贮藏超过8个月，蓖麻种子需使用传统化学杀菌剂进行处理。若将种子贮藏于冷藏柜中，则其发芽率与活力维持在80%以上无需依赖杀菌剂处理。最具应用潜力的替代杀菌剂为木霉菌SP、山梨酸钾与大蒜，其中尤以木霉菌SP效果最佳。