狭叶薰衣草与羽叶薰衣草核型分析

 采用酶解去壁低渗法对狭叶薰衣草(Lavandula angustifolia Mill. ) 和羽叶薰衣草(L. pinnataL. ) 的体细胞染色体进行核型分析。结果表明: 狭叶薰衣草的核型公式为2n = 2x = 50 = 14m + 10 sm + st, 染色体相对长度组成为2n = 50 =L + 11M2 + 13M1, 染色体组型为“2A”型。羽叶薰衣草的核型公式为2n =2x = 22 = 6m + 5 sm ( SAT) , 染色体相对长度组成为2n = 22 = s + 6M1 + 2M2 + 2L, 属于“2B”型。     

惠供矮型新优保纯种苗

一、邮种每包6元百包400元,每次邮费5元带彩照资料负法律责任。巴西无刺含羞草：改变旧有刺多伤人劣性可放心栽培玩耍,矮小灌木多年生羽叶红花,触碰闭合害羞趣味珍品60粒。盆景红月季石榴：矮小木本多年生,保证当年天天开花结果观食皆美50粒。黑月季石榴：30粒。黄月季石榴20粒。黄月季石榴15粒。薰衣草：世界多香植物,多年生四季常绿矮小灌木,耐寒全株浓香观赏食用出香精油提神降压美容强健身体驱蚊蝇种60粒。     

羽叶丁香的开花习性和访花昆虫行为观察

本文通过以分布在甘肃小陇山林业实验局黑虎林场的羽叶丁香为对象,对这种植物在不同时期的开花习性进行观察,并调查了羽叶丁香访花昆虫的种类及其访花行为。结果表明羽叶丁香在开花初期、盛期到末期,花冠和花梗逐渐膨大,长期的进化表现有利于花粉传播和授粉。开花期主要访花昆虫为膜翅目、双翅目、鞘翅目和缨翅目。本实验丰富了羽叶丁香的基础生物学研究资料,对羽叶丁香的种质资源保护和繁育具有重要意义。     

不同规格复羽叶栾树透光率的比较分析

为了明确复羽叶栾树树下光强的变化规律,采用AccuPAR(LP-80)植物冠层分析仪,测定了不同规格的复羽叶栾树树下透光率及叶面积指数的日变化,分析了复羽叶栾树冠幅、胸径、树高之间的相互关系、叶面积指数与透光率之间的关系以及复羽叶栾树对光强的影响。结果表明:复羽叶栾树的胸径与冠幅、树高具有极显著正相关关系(P0.01),冠幅与树高之间呈显著正相关(P0.05)。晴天和阴天复羽叶栾树树下透光率的日变化明显不同,晴天冠层内透光率的日变化曲线大致呈"V"字型,表现为早晚高,午间低;阴天冠层内透光率的日变化曲线大致呈"M"字型,早晚和午间均较低,期间出现高峰值。叶面积指数与透光率的变化有极强的规律性,不同规格复羽叶栾树不同距离的透光率随着叶面积指数的增加呈现负幂指数下降的趋势。提出了复羽叶栾树植物配置的建议:复羽叶栾树能充分利用强光进行光合作用,因此,适合种植于光照强度较强的区域或者处于植物群落的上层;采用复层结构进行植物配置时,依据不同规格复羽叶栾树冠层内光照强度的变化规律,可在胸径8～24cm的树下和胸径24cm的树的树冠边缘1～2m处配置阳生植物,如小蜡、红花檵木、海桐、大叶黄杨、杜鹃等,距树冠边缘3m及以上范围内栽植喜光并耐荫的植物更佳,如小檗、中华蚊母、十大功劳等。     

乌鲁木齐薰衣草的移栽技术

为了使乌鲁木齐成为薰衣草种植基地,乌鲁木齐水磨沟区进行薰衣草的移栽种植,并进行进一步的推广种植。文章在介绍薰衣草的分布、形态特征、生物学特性的基础上,分析了薰衣草的移栽技术与后期管理。     

中国薰衣草产业发展现状及对策

中国伊犁是世界薰衣草种植的第二大产区。中国薰衣草产业化发展,已经形成了集薰衣草的种植、精深加工、文化创意旅游为一体的产业集群。以中国伊犁的薰衣草产业为研究对象,重点对中国薰衣草产业现状、发展趋势及问题分析等方面进行综述,并提出相关对策建议,为进一步开发利用薰衣草资源提供参考依据。     

薰衣草的栽培技术浅析

薰衣草原产地为欧洲,近年来,国内各地都在尝试引种栽培,使其成为地方的特色产业,也为当地带来了一定的经济效益。在引种过程中,薰衣草的栽培技术也得到了相应的提高,本文对不同地区的薰衣草的栽培方法进行分析,以期为薰衣草的扩展种植提供技术方法。     

孟士德薰衣草种子萌芽生物学特性研究

以孟士德薰衣草为试验材料,研究温度、光照以及赤霉素等外界条件对孟士德薰衣草种子萌发的影响,以期找到提高孟士德薰衣草种子萌芽率的有效方法,为孟士德薰衣草的播种繁殖及育种工作提供科学的理论依据。结果表明:(1)孟士德薰衣草的种子黑褐色,表皮光滑,种皮坚硬角质化,外包蜡质,种子千粒质量(0.947±0.045)g;(2)200 mg/L赤霉素浸泡处理6 h孟士德薰衣草种子萌芽率最高,达到94.6%;(3)15℃黑暗环境下孟士德薰衣草种子萌芽率最高,达到95.2%,20℃次之,为94.6%,但相比15℃幼苗长势更好;(4)光照10 h处理有利于孟士德薰衣草种子萌芽,萌芽率为94.6%,且幼苗长势最好;(5)采用不同浓度GA3对孟士德薰衣草种子进行处理,以200 mg/L的GA3处理种子萌芽效果最佳,萌芽率达到94.0%。     

IBA对3种薰衣草扦插生根及生长的影响

以法国薰衣草、孟士德薰衣草及蕨叶薰衣草‘西班牙之眼’当年生顶芽为试材,以植物生长调节剂吲哚丁酸(IBA)为生根剂,研究了不同浓度IBA(0mg/L、100mg/L、300mg/L、500mg/L、800mg/L)对其扦插生根及生长的影响,结果表明:用300mg/L的IBA处理法国薰衣草插穗,能快速促进其生根,其生根率、平均根长、根系数量、根系效果指数、株高及叶片数量均达到最大,分别为66.00%、1.87cm、8.33条、0.31、8.37cm、20.00片;同时,孟士德薰衣草的生根率、平均根长、根系数量、根系效果指数、株高及叶片数量也均达到峰值,分别为90.00%、2.00cm、15.33条、0.60、8.67cm、21.00片;用500mg/L的IBA处理蕨叶薰衣草‘西班牙之眼’插穗,可显著提高其生根率、平均根长、根系数量、根系效果指数、株高及叶片数量,且生根及生长效果最佳,分别为93.33%、1.70cm、12.00条、0.41、19.47cm、34.67片;且IBA浓度在100~300mg/L范围内时,孟士德薰衣草生根能力最强,法国薰衣草次之,蕨叶薰衣草‘西班牙之眼’最差,但IBA浓度在300~500mg/L范围内时,蕨叶薰衣草‘西班牙之眼’生根能力最强,孟士德薰衣草次之,法国薰衣草最差。     

阳台香草之薰衣草

<正>蓝色的记忆,如同昨日烟云,淡远而温和,淡到极处,却又刻在心底,恍惚的一瞬间,才明白薰衣草花语"等待"的含义……香料植物中,最为人们熟悉的大概就是薰衣草了。薰衣草原产于地中海沿海,属于唇形花科的常绿小灌木,叶形因品种而不同;花序属于穗状花序,从深紫色到桃红色,但也有些品种是白色的;全株都散发着芳香的味道。一说起薰衣草,大家都会联想到普罗旺斯那大片的薰衣草田,如果能在薰衣草盛开的田间     

Rooting of shoot cuttings of ornamental shrubs after immersion in auxin-containing solutions

Shoot cuttings of Berberis, Cotoneaster, Lavandula, Prunus, Pyracantha and Viburnum were immersed in a solution of auxin in water. In general, this treatment gave better rooting than the commonly used method of dipping the basal part of the cutting in a powder mixture containing auxin.     

大丽菊杂合花色突变体的发现及RAPD鉴定

以新发现的大丽菊花色突变体为材料,选取10个具有10个碱基长度的随机引物,对5种突变个体的基因组DNA进行了RAPD分析.结果表明:10个随机引物共扩增出152条DNA条带,分子量大小在250～1 600 bp之间,其中有4个引物的扩增结果中检测到了差异性条带,在DNA水平上初步证实了5种花色突变体是由于遗传因素导致的稳定变异.     

大丽菊花瓣衰老过程中保护酶活性变化的研究

为探讨观赏植物大丽菊衰老相关的生理生化指标,对不同开花时期花瓣的蛋白质表达量及保护酶活性进行了研究。结果表明:随着大丽菊花朵的开放与衰老,花瓣的可溶性蛋白质含量持续减少,而过氧化氢酶(CAT)的表达量呈先增后减的变化倾向。同时,过氧化氢酶与超氧化物歧化酶(SOD)活性都表现为先升后降的变化趋势,但二者在变化时序上存在差异,而过氧化物酶(POD)活性则表现为前期下降后期上升的倾向。由此推测SOD、CAT及POD可能依次是大丽菊花瓣衰老的不同阶段清除活性氧的关键酶。     

三种薰衣草扦插成活率研究

为了将薰衣草引种到内蒙古鄂尔多斯地区,对其进行了扦插试验研究。该试验在温室内以3种不同优质的薰衣草半年生枝条为试材,在不同基质、种、浓度的生根粉和喷水时间的条件下扦插,观察记录不同种薰衣草苗成活率,筛选出最佳育苗条件,试验结果为今后薰衣草在鄂尔多斯地区大量繁殖提供科学依据。结果表明:成活率最优组合为基质比例为7:3、齿叶薰衣草、1200mg/kg生根粉浓度和4秒的喷水时间。     

薰衣草叶片高频再生体系的建立

 以薰衣草叶片为外植体进行了离体再生研究。结果表明: 叶片愈伤组织诱导最佳的培养基是MS + 2,4-D 0.1 mg/L + 6-BA 0.5 mg/L, 诱导率高达100%; 液体悬浮—固体培养芽分化率达92.5% , 芽数/愈伤组织达6.6; 正交试验筛选出芽增殖最佳培养基为MS +NAA 2.0 mg/L + 6-BA 0.5 mg/L + IAA 1.0 mg/L, 其增殖系数高达8.7; 在芽增殖培养基上可直接生根, 生根率达100%。     

Relative salt tolerance of selected herbaceous perennials and groundcovers

In order to use reclaimed water to irrigate landscape plants and minimize damage and loss, salinity tolerance of commonly used landscape plants needs to be determined and characterized. Eight herbaceous perennials and groundcovers were obtained from a local nursery, transplanted to 2.6-L plastic containers and grown in the greenhouse for 2 weeks before saline irrigation at electrical conductivity (EC) of 0.8 (tap water), 3.2, 6.4, or 12 dS m⁻¹ were initiated. Plants were irrigated with measured amount of saline solutions to obtain 30% leaching when approximately 50% water had been depleted. After 12 weeks, four plants in each treatment were destructively harvested and dry weights of shoots and roots were determined. Three Penstemon species (P. eatonii A. Gray, P. pseudospectabilis M.E. Jones, and P. strictus Benth.) and Lavandula angustifolia Mill. at 6.4 and 12 dS m⁻¹ and most at 3.2 dS m⁻¹ did not survive. Shoot dry weight of Delosperma cooperi (Hook.f.) L. Bolus decreased by 25% at 12 dS m⁻¹, but there were no significant differences among the rest of the treatments. All plants of Teucrium chamaedrys L. survived but growth was reduced significantly with lower visual scores as salinity of irrigation water increased. Although growth was reduced in Gazania rigens (L.) Gaertn. as salinity increased, no other signs of stress or injury were observed. Ceratostigma plumbaginoides Bunge had reduced growth at 3.2 dS m⁻¹ and higher EC levels compared to the control, older leaves showed reddish pigmentation at 6.4 dS m⁻¹, whereas those at 12 dS m⁻¹ did not survive. Ion concentrations of shoot and root tissue at the end of the experiment on surviving plants were also affected by salinity levels and varied among species. Among the tested species, D. cooperi and G. rigen indicated a relatively high tolerance to salinity, T. chamaedrys and C. plumbaginoides were moderately tolerant, and the rest were less tolerant.     

Drought responses of six ornamental herbaceous perennials

Although low water use landscaping is becoming common in arid regions, little is known about drought tolerance and drought responses of many ornamental plants, especially herbaceous perennials. Drought responses were assessed for six herbaceous ornamental landscape perennials in a 38 l pot-in-pot system in northern Utah over a 2-year period. The first year was an establishment period. During the second year, drought responses were evaluated for established Echinacea purpurea (L.) Moench, Gaillardia aristata Pursh, Lavandula angustifolia P. Mill., Leucanthemum × superbum (J.W. Ingram) Berg. ex Kent, ‘Alaska’, Penstemon barbatus Roth var. praecox nanus rondo, and Penstemon × mexicali Mitch. ‘Red Rocks’. Plants were irrigated at frequencies of 1 (control), 2, or 4 weeks between June and September, simulating well-watered conditions, moderate drought, or severe drought. Osmotic potential (Ψ_s), gas exchange, visual quality, leaf area, and dry weight were assessed. In a confined root zone, P. barbatus showed the greatest tolerance to all levels of drought, avoiding desiccation by increasing root:shoot ratio and decreasing stomatal conductance as water became limiting. L. angustifolia and P. × mexicali showed tolerance to moderate drought conditions, but died after exposure to the first episode of severe drought. Neither G. aristata nor L. superbum were able to regulate shoot water loss effectively. Instead, both species displayed drought avoidance mechanisms, dying back when water was limiting and showing new growth after they were watered. Compared to control plants, G. aristata shoot dry weight was reduced by 50% and 84%, and L. superbum shoot dry weight was reduced by 47% and 99% for the 2- and 4-week irrigation intervals, respectively. Root dry weights were affected similarly for both species. E. purpurea exhibited poor visual quality at all irrigation intervals, in particular wilting severely in both drought treatments, but regaining turgor when watered again. P. barbatus is recommended for ornamental landscapes that receive little or no supplemental irrigation, while E. purpurea is not recommended for low water landscapes because of low visual quality under even mild drought.     

蔬菜纸研究现状与发展前景

综述了国内外研究蔬菜纸的研究现状,分析了蔬菜纸的优良特性,重点介绍了加工工艺及加工过程中的护色与硫处理、粘结剂的选用、均质工艺等关键环节,并对其应用和前景作了展望.     

辣椒红色素的提取方法和应用

本文介绍了辣椒红色素的理化性质,对辣椒红色素提取方法及应用进行了综述,并对其发展前景做出了展望。