旱稻包衣种子耐储性及发芽力检测方法研究

Study on Storability and Testing Method in Germination Capacity of Coated Upland Rice Grains

用纸培、砂培、土培三种培养方法对六个储藏了 8个月和 1年的包衣旱稻种子做发芽研究 ,以相应的同批次未包衣种子作对照。用发芽率、幼苗鲜重和简化活力指数及田间出苗率四个指标评价包衣对种子储藏性能的影响 ,同时确定包衣种子发芽力测定的适宜方法。结果表明 ,包衣种子耐储性与基因型有关 ,旱稻 5 0 2等五个品种种子包衣后耐储性明显提高 ,而旱稻 44包衣后耐储性明显降低。测定包衣种子发芽力较好的方法是土培 ,其次是砂培 。

Germination capacity of coated and uncoated upland rice grains of 6 genotypes stored for 8 months and 1 year were measured using diffelrent germination beds: filter paper,sand and soil.Storability and proper germininating method of coated grains were evaluated with germination percentage, seedling fresh weight,vigor lndex and rate of emergence respectively. The result indicates that storability of coated grains depends on genotype: the storability of“Handao 44”grains was lowered with coating but the others’ were raised compared with uncoated grains. The best germination bed for coated grains is soil, and sand second. Howeer the filter paper is not proper to testing the germination force of coated grains of upland rice.