基于小孢子培养的青梗菜多倍体育种技术研究  

Studies on Tetraploid Breeding Techniques by Using Isolated Microspore Culture Techniques in Brassica campestris ssp. chinensis (L.) Makino

作　　者：冯辉[1] 付颖[1] 杨硕[1] 包美丽[1] 刘雪利[1] 

机构地区：[1]沈阳农业大学园艺学院,辽宁省十字花科蔬菜遗传育种重点实验室,沈阳110866

出　　处：《园艺学报》2011年第7期1299-1307,共9页Acta Horticulturae Sinica

基　　金：国家大宗蔬菜产业技术体系项目(CARS-25-A-03);国家自然科学基金项目(30171792)

摘　　要：为创制多样性的青梗菜多倍体纯系用于多倍体育种实践,以16个青梗菜杂交种为试材进行游离小孢子培养,获得了393株小孢子植株。再生植株经过形态鉴定、叶片气孔特征检测、花粉粒大小及生活力检测、花粉母细胞染色体计数,鉴定出113个自然加倍的四倍体植株,从中筛选出3个优良株系。以可育的四倍体株系为亲本配制杂交组合,通过品种比较试验筛选出1个优势显著、综合性状优良的四倍体杂交组合‘T24×T11’。建立了基于游离小孢子培养的青梗菜多倍体育种技术体系。The aim of this study was to develop diversified tetraploid lines in Brassica campestris ssp. chinensis（L.）Makino and thereby facilitate heterosis breeding.Sixteen hybrid varieties were used for isolated microspore culture and 393 regenerated plants were obtained.Among these,113 plants were identified as tetraploids based on morphological identification,examination of stomatal characteristics,size measurement and viability testing of pollen,and chromosome counts of the pollen mother cells.Furthermore,3 tetraploid lines showing excellent characteristics were screened.The 3 selected tetraploid lines were used as parents,and a tetraploid hybrid‘T24 × T11’with significant heterosis and comprehensive quality traits was selected through a variety comparison tests.A technical system for tetraploid heterosis breeding was established based on isolated microspore in Brassica campestris ssp.chinensis（L.）Makino.

关 键 词：青梗菜 游离小孢子培养 多倍体 杂种优势 

分 类 号：S634.3[农业科学—蔬菜学]