万寿菊提取叶黄素专用品种筛选及配套技术研究   总被引：6，自引：1，他引：6  

曾丽  周叶林  陈光甫  盛宣国  储琪春 《上海交通大学学报(农业科学版)》2002,20(2):145-149

通过选定的5个品种的比较，筛选出适合作为生产叶黄素的专用品种‘99022’，‘99001’及‘99146’，这些品种花期长，鲜花产量高，色素含量高，均地上海及其周边地区种植，花色越深，叶黄素含量也相对越高，单花重，单株鲜花重和鲜花总产量尽管品种间存在较大差异，但所选出的3个品种均以74000株／hm^2密度处理的表现最高，通过本研究还提出了相应的万寿菊栽培方案。  相似文献   

色素万寿菊雄性不育植株的快速繁殖     

魏晓梅  吴丽芳 《北方园艺》2021,(2):53-59

以色素万寿菊为试验材料,采用母本资源不育株叶片、带腋芽茎段和侧芽为外植体,对不同的培养基配方条件下的生长情况进行统计,研究了灭菌处理、生长调节剂组合、AgNO3对丛生芽诱导的影响,以期快速获得遗传稳定的万寿菊雄性不育植株,为杂交育种提供基础研究材料。结果表明:以带腋芽的茎段为最佳外植体,1 g·L^-1 HgCl2灭菌10~12 min的灭菌效果最好,B1-3较易诱导丛生芽,其最佳的诱导培养基为MS+1.0 mg·L^-16-BA+0.5 mg·L^-1 NAA+30 g·L^-1蔗糖+7 g·L^-1琼脂,诱导率高达93%,2.0 mg·L^-1 AgNO3有利于丛生芽增殖,使B1-3丛生芽增殖率达151.6%,丛生芽生根培养后移栽成活率达95%以上。发现万寿菊离体培养过程中,外植体不同,其丛生芽诱导率不同,最佳外植体为带腋芽茎段。不同的灭菌剂的灭菌效果不同,1 g·L^-1 HgCl2灭菌效果最好;丛生芽诱导时6-BA与NAA不同浓度组合优于6-BA与IAA组合;低浓度AgNO3能够促进丛生芽诱导,高浓度反而会降低。  相似文献   

Phosphorus efficiency of ornamental plants in peat substrates     

Azizollah Khandan‐Mirkohi  Manfred K. Schenk 《植物养料与土壤学杂志》2009,172(3):369-377

A pot experiment was conducted to investigate factors contributing to phosphorous (P) efficiency of ornamental plants. Marigold (Tagetes patula) and poinsettia (Euphorbia pulcherima) were cultivated in a peat substrate (black peat 80% + mineral component 20% on a volume basis), treated with P rates of 0, 10, 35, 100, and 170 mg (L substrate)^–1. During the cultivation period, plants were fertigated with a complete nutrient solution (including 18 mg P L^–1) every 2 d. Both poinsettia and marigold attained their optimum yield at the rate of 35 mg P (L substrate)^–1 and the critical level of P in shoot dry matter of both crops was 5–6 mg g^–1. After planting, plant‐available P increased at lower P rates to a higher level for poinsettia than for marigold, but no significant change was observed at higher P rates. Balance sheet calculations indicated that at lower P rates more P was fertigated than was taken up by the plants. Root‐length density, root‐to‐shoot ratio, and root‐hair length of marigold were doubled compared to that of poinsettia. Root‐length density increased with crop growth, and 10 d after planting the mean half distance between roots exceeded the P‐depletion zone around roots by a factor of 3 and 1.5 for poinsettia and marigold, respectively. Thus, at this early stage poinsettia exploited only 10% of the substrate volume whereas marigold utilized 43%. Later in the cultivation period, the depletion zones around roots overlapped for both crops. Taking into account P uptake via root hairs, the simulation revealed that this was more important for marigold compared to poinsettia especially at low P‐supply levels. However, increase of P uptake due to root hairs was only 10%–20% at optimum P supply. For the two lower P levels, the P‐depletion profile around roots calculated for 10 d after planting showed that after 2 d of depletion the concentration at the root surface was below the assumed K_m value (5 μM) and the concentration gradient was insufficient to fit the demand. A higher content of plant‐available P in the substrate was observed for poinsettia compared to marigold in the treatment with P application adequate for optimum growth, because more fertigated P was accumulated during early stages of cultivation due to lower root‐length density of poinsettia. The observed difference of root morphological parameters did not contribute significantly to P‐uptake efficiency, since P mobility in the peat substrate was high.  相似文献   

Investigation into the antioxidant activity and chemical composition of alcoholic extracts from defatted marigold (Tagetes erecta L.) residue     

Gong Y  Liu X  He WH  Xu HG  Yuan F  Gao YX 《Fitoterapia》2012,83(3):481-489

The influence of various solvents on the yield of polyphenols from defatted marigold residue, the antioxidant activity of the extracts and the composition of antioxidant compounds in the extracts were investigated. The content of total phenolics and flavonoids in the extracts was significantly varied with different solvents (P<0.05) and the extract by ethyl alcohol (EtOH)/water (7:3, v/v) has the highest content of total phenolics and flavonoids, 62.33 mg gallic acid equivalents (GAE)/g and 97.00 mg rutin equivalent (RE)/g, respectively. The antioxidant activity of the extracts was evaluated by radical (2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 1,1-diphenyl-2-picrylhydrazyl (DPPH)) scavenging and ferric reducing antioxidant power (FRAP) assays. The results of the correlation analysis showed that the antioxidant activity was well correlated with the content of total phenolics and flavonoids (R2>0.900). Antioxidant components in the extracts were identified by combined on-line HPLC-ABTS·+ post-column assay and HPLC-DAD-MS method. Gallic acid, gallicin, quercetagetin, 6-hydroxykaempferol-O-hexoside, patuletin-O-hexoside and quercetin were the dominant antioxidant compounds in the extracts, and quercetagetin was identified as the strongest antioxidant capacity.  相似文献   

不同灌溉模式下金盏花水分动态研究     

钱永康  何庆祥  赵继荣  雒淑珍 《草业科学》2012,29(8):1272-1277

以金盏花（Tagetes erecta）为试验材料,通过人工控制灌水量的试验,比较了垄作与平作不同灌溉模式下,水分在0~80 cm剖面上的动态迁移规律,并分析了不同灌水模式下的灌溉效率和肥料利用效率。结果表明,金盏花从播种至拔节期,0~40 cm土层土壤含水量平作各处理均高于相应的垄作各处理,但经过拔节期稳定之后,垄作沟灌的土壤含水量要高于平作各处理;垄作沟灌各处理的深层（40~80 cm）土壤水分含量均大于其相应平作处理。金盏花田的土壤水分纵深分布基本呈明显的“W”型分布,垄作沟灌的总产量均略高于相应的平作漫灌,A2B1（垄作沟灌4 200 m3·hm-2）与A2B3（垄作沟灌3 000 m3·hm-2）的总产量基本相当,而A2B2（垄作沟灌3 600 m3·hm-2）处理最高,与A1B1（平作漫灌4 200 m3·hm-2）差异显著,比A1B1增产25%。水分和肥料利用率分别为139.94 kg·mm-1·hm-2和24.9%。垄作沟灌与常规耕作比较, 有效地提高了土壤含水量, 具有较好的节水作用,增产效果明显。  相似文献   

金盏花春秋棚杂交制种技术操作规程   总被引：1，自引：0，他引：1  

张肖凌  王致和  韩钟英 《北方园艺》2011,(4):105-107

该规程规定了金盏花春、秋棚杂交制种的定义和术语、父母本特征特性、产量质量指标、制种技术等内容,指出了该标准适用于甘肃省河西地区利用春秋棚进行金盏花杂交种子的生产,气候条件相近和具有春秋棚设施的其它地区也可参照采用。  相似文献   

2类诱抗剂对色素万寿菊生长影响的研究     

杨林  朱莉  李建国  时祥云 《安徽农业科学》2015,(12)

[目的]研究2类诱抗剂对色素万寿菊生长的影响。[方法]引用芸苔素内酯、氨基寡糖素2类诱抗剂,分别以不同浓度喷施色素万寿菊,研究其对色素万寿菊生育期、长势及花期、抗病性及产量的影响。[结果]喷施2类诱抗剂对色素万寿菊生长有一定的延缓早衰效果,有利于生育期延长;喷施氨基寡糖素对早期发生的病毒病诱抗效果比较明显,而这2类诱抗剂对黑斑病诱抗效果并不明显;2类诱抗剂对色素万寿菊产量的影响不明显。[结论]。该研究可为色素万寿菊规范化栽培和产业发展提供重要依据。  相似文献   

万寿菊杀菌素Ⅰ抑菌作用及对西瓜幼苗的影响   总被引：1，自引：1，他引：0  

范志宏  郭春绒  王金胜 《山西农业科学》2011,39(1):61-63,66

研究了万寿菊杀菌素Ⅰ对西瓜枯萎病菌、辣椒枯萎病菌和辣椒疫霉病菌的抑菌作用及对西瓜幼苗的影响。结果表明,万寿菊杀菌素Ⅰ能有效抑制西瓜枯萎病菌、辣椒枯萎病菌和辣椒疫霉病菌。在西瓜枯萎病的主要发病期苗期施用万寿菊杀菌素Ⅰ,能提高西瓜幼苗的POD和SOD活性,并维持CAT活性,有效减轻西瓜枯萎病菌对植株的毒害作用。  相似文献   

金盏花雄性不育两用系的选育   总被引：1，自引：1，他引：0  

王致和张肖凌  张秀华赵继荣赵永平  韩钟英 《中国农学通报》2011,27(6):84-89

为了选育适宜于甘肃省种植金盏花杂交新品种,彻底扭转甘肃省金盏花生产用种依赖引进的局面,确保金盏花产业的可持续发展。从2002年开始,利用田间发现的不育株,对金盏花GM-1和GM-2后代分离群体采用二环系选育法进行了大量的保持系及其测交组合的配制,选择出了符合雄性核不育两用系。根据两用系可育株花朵的重瓣或单瓣特性,对获得的株系进行育性比较,从中选出了LYX-1（重瓣）和LYX-2（单瓣）两个优良的雄性不育两用系,不育率达到50%,不育性由一对隐性基因控制,并且生物学性状也基本稳定,可用于杂交组合的配制。  相似文献   

色素万寿菊叶片再生体系的建立及优化   总被引：1，自引：0，他引：1  

赵子刚  曾丽  唐克轩  季春娟  孙佳  杨帆 《园艺学报》2010,37(4):655-660

以色素万寿菊叶片为外植体,探讨了不同的植物生长调节剂组合、AgNO3、凝胶剂及不同的继代培养基对叶片器官发生的影响。结果表明：6-BA 3.0 mg · L-1 + IAA 3.0 mg · L-1 + 蔗糖30.0 g · L-1 + 植物凝胶6.0 g · L-1的MS培养基适宜不定芽的分化,不定芽分化率达97.5%,将分化13 d的叶片外植体转接到组织培养瓶中,30 d后56.7%的不定芽可发育成高约5 cm的植株,再生植株在MS培养基上生根率为100%,移栽成活率达100%。  相似文献