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马铃薯离体再生及人工种子研究
唐巍; 欧阳藩; 郭仲琛;
1.中国科学院化工冶金研究所生化工程国家重点实验室;2.中国科学院植物研究所
摘要:
马铃薯3个品种虎头,克4和Favorita的茎叶外植体在MS+1mg/LNAA+1mg/LBA培养基上形成愈伤组织。在MS+02mg/LNAA+1mg/LBA培养基上,愈伤组织分化产生不定芽。在MS+005mg/LNAA培养基上,不定芽生根形成再生完整植株。02~03cm大小的不定芽反复继代可持续增殖。有3个以上叶片的不定芽在MS+5mg/LBA+005mg/LIBA培养基上和黑暗条件下,在侧芽或顶芽部位形成微型薯。用4%海藻酸钠和2%氯化钙溶液包裹02~03cm大小的不定芽或直径为02~03cm的微型薯制成微芽人工种子和微薯人工种子。在4℃下贮存2个月后,微芽人工种子和微薯人工种子在有菌腐殖土壤中播种21d的萌发率分别是157%和962%。
关键词:  马铃薯  离体再生  人工种子  
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