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东方百合鳞茎快速增长的组培体系研究 总被引：1，自引：0，他引：1
以东方百合栽培品种‘Sorbonne’和‘Siberia’的组培苗为试验材料,研究了蔗糖、6-BA、IAA、PP333及活性炭（AC）的添加浓度对组培苗小鳞茎增重和直径生长的影响;结果表明：80g／L蔗糖浓度有利于‘Sorbonne’和‘Siberia’组培苗小鳞茎增重;6-BA浓度为0．2mg／L、IAA浓度为0．5和1．0mg／L时‘Sorbonne’和‘Siberia’组培苗小鳞茎平均直径增加最大,分别为120．7％和138．0％;PP333浓度达3．2mg／L和1．6mg／L时,‘Sorbonne’和‘Siberia’的组培苗小鳞茎平均直径增加最大,分别达到505．7％和211．3％;AC浓度达到2．0g／L时‘Sorbonne’试管苗小鳞茎平均直径增加最大,浓度达到4．0g／L‘Siberia’组培苗小鳞茎平均直径增加最大,分别为194．7％和220．3％。 相似文献
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为了探究兰州百合试管鳞茎膨大培养基最佳配方和培养条件,解决试管苗移栽成活率低的问题,以兰州百合鳞片诱导形成的小鳞茎为试验材料,研究光暗不同培养条件下蔗糖和大量元素对兰州百合试管鳞茎生长和膨大的影响。在光照(12 h/d光照)和黑暗(24 h/d黑暗)条件下,设置不同质量浓度蔗糖(90 g/L、120 g/L、150 g/L)和不同浓度的大量元素(MS、2MS、3MS)组合处理,培养60 d后测定其鳞茎直径、鲜重、叶长等相关指标。结果表明,蔗糖和大量元素均对兰州百合试管鳞茎生长和膨大有显著的影响,且两者存在显著的交互作用,光照条件下鳞茎生长指数和鳞茎鲜重百分比均大于黑暗条件。根据生产实际,推荐适合兰州百合鳞茎膨大的组合为2MS+蔗糖120 g/L+NAA 0.2 mg/L,培养条件为1 500～2 000 lx下光照12 h/d。 相似文献
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[目的]对西伯利亚百合的鳞片扦插繁殖体系进行研究.[方法]以西伯利亚百合的鳞片为材料,研究不同基质、不同酚类物质和植物激素对百合鳞片扦插再生小鳞茎的影响.[结果]用细沙为基质有利于百合鳞片生根及小鳞茎的膨大;酚类物质水杨酸(SA)能促进母鳞片产生小鳞茎,并增加繁殖系数和小鳞茎的直径,同时还可提高母鳞片内可溶性糖和可溶性蛋白质的含量,为小鳞茎的形成及膨大提供营养物质和能量;植物激素中NAA能促进百合鳞片根的形成,但对小鳞茎的形成无明显促进作用.[结论]该研究为百合鳞片的快速繁育提供了参考. 相似文献
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大蒜花苞具有很强的不定芽增生潜力，是不定芽体系快繁的理想外植体。在MS＋NAA1mg／L＋KT5mg／L培养基上，早苔2号蒜花苞的繁殖系数为19．2，晚熟品种的繁殖系数更高。低温能促进试管鳞茎的发生，花苞4℃预处理10d后，82．9％的不定芽都形成试管鳞茎。由大蒜花苞诱导不定芽的发生，然后诱导试管鳞茎的形成，这是一种适于大蒜快繁的新型再生体系。 相似文献
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One-year-old scale bulblets of Lilium longiflorum Thunb. ‘Nellie White’ (Easter lily) were grown under a combination of six constant day/night temperature regimes and five N–P–K nutrient treatments under short days for 107 d (growing period 1 or GP-1) to compare the effects on growth and development and bulb production. Results during GP-1 were as follows: failure of bulblets to produce a shoot (“no-shows”) was found at high temperatures (30/26 and 26/22 °C) and not influenced by the nutrient treatments. Flower bud abortion was observed in the minus-N, minus-P, and minus-N–P–K treatments at high temperatures (30/26 or 26/22 °C), but not observed at any temperatures in the complete and minus-K treatments. The loss of bulb fresh weight in minus-N treated bulblets was less than in the other treatments resulting in less root and shoot growth in the minus-N treatment. At the intermediate temperatures where growth was highest, omission of N, P, K, or all three resulted in losses in stem bulb fresh weight, stem plus leaf fresh weight, number of flowers, and stem root fresh weight. Omission of N, P, or all three nutrients resulted in lowest basal root fresh weight. Bulb N and K concentrations were lowest in plants grown with complete nutrient solution at the two coldest temperature regimes (14/10 and 10/6 °C). Bulb P concentration was lowest at the three coldest (18/14, 14/10 and 10/6 °C) and the warmest (30/26 °C) temperature regimes. Stem length was shorter when P was omitted. Omission of any of the three nutrients resulted in lower concentrations of the other nutrients. The one exception was where low K did not affect N concentration. In the second phase of the experiment, plants grown at 18/14 °C and irrigated with the complete nutrient solution for 107 d (GP-1) were continued at this day/night temperature regime and five N–P–K nutrient treatments for another 89 d under long days (growing period 2 or GP-2). Results during GP-2 were as follows. Basal bulb yield was not impacted by omission of N, P, or K, or all three. Of all growth measurements, only stem plus leaf fresh weight was lower and only when all three nutrients (minus-N–P–K) were omitted. At the end of GP-2, basal bulb concentrations of N and P did not differ from the concentrations in bulbs at the beginning of GP-1; however, K concentration was lower at the end of GP-2. Omission of N or P further resulted in lower bulb K concentration, suggesting that a moderate supply of N, P, and K be applied during GP-2 since an additional year of bulb production is needed to produce forcing-sized bulbs. 相似文献
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大蒜鳞芽生长点离体培养诱导小鳞茎的形成 总被引：3，自引：0，他引：3
用大蒜鳞芽生长点进行离体培养，结果表明，生长素ＮＡＡ浓度在０．１～１．０ｍｇ／１之间，细胞分裂素６—ＢＡ浓度在０～０．５ｍｇ／１范围内，其浓度愈低愈能促进小鳞茎的形成；贮期温度愈低，愈有利于小鳞茎的形成；３～８℃低温期大于６０天，才能保证小鳞茎的形成。 相似文献