搜索结果: 1-2 共查到“作物学 Nicotiana tabacum”相关记录2条 . 查询时间(0.098 秒)
Effects of cultural practices on weed flora in Virginia (flue-cured) organic tobacco (Nicotiana tabacum L.): green manure and irrigation systems
Allelopathy drip irrigation green manure organic tobacco sprinkler irrigation weed flora
2010/10/29
Organic tobacco is a new industrial crop. Field experiments were conducted, during 2005-2006, to determine the effects of irrigation system and green manure on weed flora in organic tobacco crops (Nic...
烟草(Nicotiana tabacum L.)花粉胚状体染色体加倍的研究
烟草
2008/1/10
本研究从寻求提高花粉植株加倍频率和性状表达能力的途径出发,进行了三年四批次对比试验,取得如下主要结果:(1)、花药培养至药室开裂、肉眼能见白色胚状体时,转移至吸饱0.2%秋水仙液的无菌脱脂棉上,处理72小时或长一些时间然后转上培养基,这样能取得60%的加倍效果。(2)、用注射器将灭菌的0.2%秋水仙液滴入开裂而见胚状体的药囊中,这样分化出的烟苗,加倍频率亦能达30%。(3)、无论(1)或(2)加倍...