影响中期低温库贮存种子生活力因素的研究

对甘肃省中期低温库贮存7~10年具有代表性的8大类13种作物的203份资源材料抽样进行生活力监测,结果表明:除贮存8年的10份大豆(地方)品种比入库发芽率平均上升7.4%外,其它193份资源材料的发芽率均为下降,其中茄子、西瓜、苦荞麦、高粱4种作物需要立即更新。对于外部环境较为稳定的种子低温贮藏来说,作物耐贮存性和入库种子的质量(高生活力和低含水量)是影响种子生活力的主要因素。

Studies on Factors of Affecting Viability of Crop Seeds Stored in Medium-term Genebank of Gansu

Based on IBPGR(1985) request of 10 years detecting seed's vitality which keeps in middle-long period germplasm bank,this paper detected 203 germplasm's vitality and water,which were belong to 8 sorts and 13 kinds of crops which have preserved for seven to ten years in the germplasm bank in Gansu.The results showed that:all seed germination of 193 germplasm resources have been descent except for 10 soybean landraces average raising 7.4%,4 kind of crops,eggplant,watermelon,tartary buckwheat and sorghum,need renewal immediately.It also showed that the crop's storage tolerance and the seed's quality(high vitality and low water content) when they had been put into germplasm bank were the main factors which affect the seed vitality.