摘要
本试验采用流式细胞仪对苜蓿(Medicago sativa L.)F1代杂种花药培养再生植株进行染色体倍性检测。旨在建立高效的苜蓿花药培养体系,提高苜蓿单倍体的诱导效率,寻求一种快速简便的苜蓿倍性检测方法。检测结果为流式细胞仪矩形图上清晰地检测出二倍体、三倍体、四倍体以及二倍体加四倍体的嵌合体。50株苜蓿花药再生植株中有42株四倍体(2n=4x),2n=4x与2n=2x的混合体为5株,二倍体(2n=2x)为2株,三倍体(2n=3x)为1株。本文还讨论了苜蓿花药培养体系的建立,优化,以及筛选出了适宜制作苜蓿细胞悬浮液的缓冲液(15 mmol.L-1Tris-HCl(pH7.5);80 mmol.L-1KCl;20 mmol.L-1NaCl;2 mmol.L-1EDTA-Na2;15 mmol.L-1β-Mercaptoethanol;0.1%(V/V)TritonX-100;0.5 mmol.L-1Spermine.4HCl)及其流式细胞仪检测苜蓿倍性的适应性程序。
Ploidy levels of F1 hybrid plants,derived from anther culture in Medicago sativa L.,were determined by flow-cytometric analysis.Purpose of the study was to seek a fast and reliable method for DNA ploidy detection to establish an effective system of anther culture while improving haploid induction in Medicago sativa L.There were 42 tetraploids(2n=4x=32),5 mixoploids of diploid and tetraploid(2n=4x +2n=2x),2 diploids,1 triploid in 50 regeneration plants of anther culture.The optimization of both cell suspension buffer and anther culture system in Medicago sativa L.was also discussed in the paper.
出处
《草地学报》
CAS
CSCD
北大核心
2010年第5期714-718,共5页
Acta Agrestia Sinica
基金
国家"863"计划项目(2008AA10Z149)
国家自然科学基金项目(30972136)资助