| 1. | Wounded cotyledons of four - day - old seedlings of lettuce ( lactuca saliva l . )
外植体在无抗生素的诱芽培养基（ ms 0 |
| 2. | Study on the nitrogen fertilizer amount to the lactuca sativa yield and the develoption of special purpose fertilizer
氮肥用量对生菜产量的影响及生菜专用肥的研制 |
| 3. | L . soil quality - determination of the effects of pollutants on soil flora - screening test for emergence of lettuce seedlings lactuca sativa l
土质.污染物对土壤植物群影响的测定.莴苣出苗的筛选试验 |
| 4. | Lactuca sativa l . soil quality - determination of the effects of pollutants on soil flora - screening test for emergence of lettuce seedlings lactuca sativa l .
土质.污染物对土壤植物群影响的测定.莴苣苗发出的筛选试验 |
| 5. | Major morphological and economical characters and some physiological and biochemical changes of head lettuce ( lactuca sativa var . capitata l . ) under heat stress were studied
摘要以6个结球莴苣品种为试验材料，从生长发育、经济性状和生理生化等方面研究耐热性的鉴定方法。 |
| 6. | In this experiment , hbsag ( adw subtype ) was introduced into lettuce ( lactuca sativa ) with the agrobacterium transformation system and biolistic method . we hope to obtain the transgenic lettue with hbsag so that it can be used as edible vaccine
本实验采用农杆菌介导法和基因枪介导法，研究了乙肝表面抗原基因( hbsag )导入可生食的莴苣(生菜) ( lactucasativa )的核基因组和叶绿体基因组，并期望获得转基因莴苣植株，从而建立以莴苣为生物反应器生产可食用的乙肝疫苗。 |
| 7. | The position about three kinds of lactuca brevirostris was discussed . the lanceolate - leaf lactuca brevirostris and the linear - leaf lactuca brevirostris were possibly two subspecies and two kinds of lanceolate - leaf lactuca brevirostris were possibly different species , lanceolate - leaf lactuca brevirostris 2 might be a variant or an external species
本研究还讨论了三份野莴苣的地位，披针叶野莴苣与线叶野莴苣可能是不同的亚种；两种披针叶野莴苣可能是不同的种，其中，披针叶野莴苣2可能是个变异种或外来种。 |
