共查询到19条相似文献,搜索用时 187 毫秒
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本研究以种子繁殖、扦插繁殖和组培苗繁殖3种不同方式种植巴戟天,观察栽培期间的生物学特性并测定比较其品质和成活率。结果表明,种植5年后收获时,扦插繁殖的巴戟天根直径、干重、蒽醌类化合物含量较高;组堵苗繁殖的成活率较高。 相似文献
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紫杉醇是当前倍受关注的抗癌新药,美国国立癌证研究所(NCI)预测,紫杉醇将成为主要的抗癌药之一,其原料植物红豆杉资源的过度开发利用,导致供求矛盾十分突出。大面积营造红豆杉人工林被认为是解决紫杉醇原料的有效途径。本文报道南方红豆杉育苗繁殖技术。 相似文献
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美国库拉索芦荟是一种神奇的药用芦荟,其无性繁殖一般为分生法和插枝法,但这种繁殖速度很慢,不能满足当今芦荟种植业发展对种苗的需求,为使芦荟繁殖技术进入工厂化生产,我们利用生物组培技术进行快速繁殖试验研究,经过一系列激素浓度组合的对比,筛选出适宜的诱导、增殖和生根培养基。 相似文献
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苎麻嫩茎梢带叶土培扦插繁殖研究 总被引:6,自引:0,他引:6
目前苎麻纺织工业的迅速发展,如何迅速扩大苎麻生产面积,已成为一个亟待解决的重大课题。近年来,国内着重研究了苎麻无性繁殖的几种方法,如1981年湖南农学院与上海农科院合作进行的“苎麻组织培养及其快速繁殖研究”,1983年华东师大与华中农学院研究成功“苎麻嫩梢带叶水培繁殖法”, 相似文献
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经研究与生产实践,应用薄膜遮阴网双层覆盖繁殖良种种苗,1989-1993年共同圃良种苗木9084万株,具促销措施有力,良种茶苗覆盖本省主要茶区及全国9省(区),经济效益与社会效益显著,为茶树良种繁殖与推广作出了重要贡献。 相似文献
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研究模拟酸雨对南方红豆杉叶片形态和生理特性的影响.结果表明:酸雨胁迫下南方红豆杉叶尖出现伤害症状,叶片发生脱落,随着酸雨胁迫程度的加剧,叶片损伤程度加重;酸雨胁迫下叶绿素、类胡萝卜素、丙二醛和可溶性糖含量变化不明显;酸雨胁迫下超氧化物歧化酶(SOD)活性变化不明显;中度胁迫(pH4.0)和轻度胁迫(pH5.6)时过氧化氢酶(CAT)活性显著高于对照,而重度胁迫(pH2.5)的CAT活性显著低于对照;轻度胁迫时过氧化物酶(POD)活性显著高于对照,而中度胁迫和重度胁迫的POD活性显著低于对照.这说明南方红豆杉对pH4.0~5.6的酸雨胁迫有一定的适应性和抵抗力. 相似文献
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Artanti N Tachibana S Kardono LB Sukiman H 《Pakistan journal of biological sciences: PJBS》2011,14(22):1019-1023
Endophytic microbes are considered as an important source of natural products. They show antibiotic, anticancer, antioxidative and antidiabetic activities. Therefore, there are many reports on the isolation and bioactivity screening of endophytic fungi from various plants including Taxus species. Taxus sumatrana (Miq.) de Laub is found in Indonesia. The objective of this study is to conduct an in vitro screening of 14 endophytic fungi isolated from Taxus sumatrana having antioxidative and alpha-glucosidase inhibitor activities. Each endophytic fungus was cultured for 7 days and the fungal mycelium and medium were extracted with methanol and ethyl acetate, respectively, to produce each extract. The antioxidative activity of each extract was tested by DPPH free radical scavenging activity and beta-carotene bleaching assays, whereas antidiabetic activity was tested based on alpha-glucosidase inhibitor activity. The screening results showed that fungal mycelia of TSC 13 had the best alpha-glucosidase inhibitor activity and TSC 24 had the best antioxidative activity. Isolation of bioactive compounds from TSC 13 and TSC 24 is being conducted. This is the first report that endophytic fungi isolated from T. sumatrana exhibited anti alpha-glucosidase inhibitory and anti oxidative activities. 相似文献
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Species of Calonectria and their Cylindrocladium anamorphs are important plant pathogens worldwide. At present 52 Cylindrocladium spp. and 37 Calonectria spp. are recognised based on sexual compatibility, morphology and phylogenetic inference. The polyphasic approach of integrating Biological, Morphological and Phylogenetic Species Concepts has revolutionised the taxonomy of fungi. This review aims to present an overview of published research on the genera Calonectria and Cylindrocladium as they pertain to their taxonomic history. The nomenclature as well as future research necessary for this group of fungi are also briefly discussed. 相似文献
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灵芝是一类木腐真菌,具有重要的药理价值,灵芝栽培方法研究能为实际应用提供技术支撑。本研究选择一株分离自海南五指山的灵芝进行室内栽培方法研究,并分析其出芝和菌盖形成的动态变化规律以及子实体的形态特征。结果表明,灵芝出芝动态具有显著的规律性,随着时间的进行,出芝逐渐减少;而菌盖形成没有明显的时间规律。此外,室内栽培灵芝出芝率及菌盖形成率较高,但子实体大小相对大田栽培灵芝小,反映了可通过增加栽培原料的营养成分提高灵芝子实体大小,为进一步推广应用室内栽培方法提供参考。 相似文献