摘要
小麦品种“他诺瑞”,“京中15号”和玉米品种“华农2号”种子在液态氨(-196℃)冷冻保存七年后,活力无明显变化。种子发芽率同保存前相比,无明显差异,根尖细胞有丝分裂后期没有发现染色体异常现象,在田间和网室播种后,幼苗生长初期缓慢,40天以后恢复正常,叶数、、抽穗期,穗长,单株穗数,成熟期等农艺性状正常。
Seed vigor of wheat Abstract cv.“Tanori”,“Jingzhong 15”and ma- ize cv.“Huanong 2”had no obvious change after seed stored in Liquid ni- trogen for more than seven years.The aberrant chromosomes at mitosis anaphase of root tip cell from seed stored in liquid nitrogen were not dis- covered.The seeding of seed stored in LN_2 grew slowly at early stage in field and netroom.However,the seedling returned to norma growth after 40days.The number of leaves,date of ear shooting,ear length,avail- able tillers,mature stage of plant from seed stored in LN_2 was as normal as control sample.
出处
《制冷学报》
CAS
CSCD
1990年第2期30-34,共5页
Journal of Refrigeration
基金
国家自然科学基金资助课题
