宁夏枸杞繁育系统初步研究

运用TTC法、联苯胺—过氧化氢法、P/O比、OCI和套袋实验,对宁夏枸杞种内各参试材料花粉活力、柱头可授性及繁育系统进行了研究。结果表明:宁夏枸杞花粉数量/胚珠比大于4 000,杂交指数介于3～4,结合人工授粉和套袋实验结果可以确定在参试的13个品种(系)中麻叶系材料(宁杞1号、2号、大麻叶、小麻叶)表现为部分自交亲和;而其它材料(白花、白条、宁杞3号、尖头圆果、圆头圆果、蒙杞1号、扁果、0701、0616)表现为自交不亲和,同株异花、异株异花几乎不坐果,自然条件下只有通过与其他材料混植的途经来实现结实。由于自交亲和水平极低,宁夏枸杞的繁育系统应属于专性异交(除麻叶系材料)。

Preliminary study on the breeding system of Lycium barbarum

The pollen viability,stigma receptivity and breeding system of Lycium barbarum were studied by using TTC,benzidine-hydrogen peroxide,pollen-ovule ratio,out-crossing index and bagging experiment.The results showed that:the ratio of pollen quantity and ovule of L.barbarum is more than 4 000,and hybrid index is between 3 and 4.The combination of artificial pollination and bagging experiments determined that among these 13 participants, Maye(Ningqi 1,Ningqi 2,Damaye,Xiaomaye)performanced partly as self-compatible,while other materials(Baihua, Baitiao,Ningqi 3,Jiantouyuanguo,Yuantouyuanguo,Mengqi l,Bianguo,0701 and 0616 ) showed self-incompatible, flower with different strains,different strains of different flower hardly setting,and under natural conditions only through mixing with other materials can they achieve replanting seed.Because of the extremely low level self-compatibility, the breeding system of L.barbarum should belong to obligate xenogamy(except the Department of Maye).