保鲜剂对香石竹切花的保鲜效应

研究了保鲜剂(4％蔗糖 200 mg／L8-HQ 50 mg／L6-BA及4％蔗糖 0．1％明矾 0．02％尿素 0．02％NaCl)对香石竹切花的保鲜效应。结果表明,保鲜剂4％蔗糖 200 mg／L8-HQ 50 mg／L6-BA能明显地缓解切花水分胁迫,改善体内水分平衡,延缓切花衰老,延长切花的寿命。     

保鲜剂对晚香玉切花的保鲜效应

以晚香玉切花为材料,用蔗糖、6-BA、8-HQC和酒石酸按四因素三水平的正交设计配制保鲜液,通过测定瓶插寿命、小花开放率、鲜重、可溶性糖和电导率,研究不同保鲜剂的保鲜效果。结果表明：与对照相比,各处理均能不同程度地延缓切花衰老,其中处理9即12g.L^-1蔗糖＋60mg·L^-16-BA＋400mg·L^-18-HQC＋100mg·L^-1酒石酸效果最好,花枝瓶插寿命比对照长6d,70％的小花开放,其他指标均明显优于对照,是晚香玉切花较好的保鲜配方。     

尾巨桉胚培养与快速繁殖研究(简报)

尾巨桉种胚在改良H＋2,4-D0．5mg／L＋6-BA0．1mg／L＋蔗糖3％培养基上诱导形成愈伤组织,每个愈伤组织块在改良H＋6-BA1．0mg／L＋NAA0．5mg／L＋蔗糖5％培养基上分化形成芽点,经30d继代培养,产生有效苗30～50株。利用改良MS＋6-BA0．4mg／L＋NAA0．2mg／L＋蔗糖3％培养基进行壮苗,改良MS＋ABT0．6mg／L＋IBA0．2mg,L＋蔗糖1．5％培养基进行生根诱导．有效成苗率达95％以上。移栽成活率达98％．     

台湾金线莲增殖培养正交试验设计

以台湾金线莲试管苗茎段为外植体,应用L9（3^4）正交试验设计优选不定芽增殖培养基,结果表明,基本培养基、6-BA、NAA、蔗糖对不定芽增殖培养均有极显著影响,其作用表现为：蔗糖〉基本培养基〉6-BA〉NAA,最适宜的增殖培养基为1／2MS＋6-BA3．0mg／L＋NAA0．6mg／L＋蔗糖10g／L。     

保鲜剂对天门冬切叶的保鲜效应

以150 mg·L-1柠檬酸+500 mg·L-1 CaCl2+1 mg·L-1 6-BA为基础液，加入不同浓度蔗糖和青霉素进行瓶插试验，研究天门冬(Asparagus cochinchinensis)切叶瓶插寿命、黄化程度及生理变化。结果表明，基础液添加100 mg·L-1青霉素+0.25%蔗糖保鲜液对天门冬切叶保鲜效果最好，与对照比，瓶插寿命延长11.3 d；比对照推迟4 d出现黄化现象；叶绿素含量推迟3 d达到峰值；鲜重变化率比对照推迟2 d达到峰值，且维持在较高水平；相对电导率和MDA维持较低水平；POD活性推迟3 d出现峰值，且POD活性比对照高，CAT活性推迟6 d出现峰值，且CAT活性维持较高水平。说明适宜浓度的蔗糖和青霉素能减缓叶绿素含量和叶片鲜重下降，抑制叶片内膜脂过氧化产物MDA产生，维持叶片膜结构相对稳定，增强POD和CAT活性，保持天门冬切叶观赏品质并延长瓶插寿命。     

应用正交试验筛选玫瑰茎段增殖培养基

以玫瑰茎段为试材,6-BA、NAA、GA3及蔗糖为试验因子,每因子设置3个含量水平,以不同培养基的增殖系数为测定指标,通过L9(3^4)正交试验,筛选出1种宜于玫瑰茎段增殖培养的理想培养基,即MS 6-BA1．0mg／L NAA0．01mg／L GA30．05mg／L 蔗糖35g／L。     

长安麦饭石在月季切花上的保鲜效果

在40g/L蔗糖＋50mg/L SA 100mg/L Vc的保鲜液中,加入37μS/cm的长安麦饭石（CHMS）,能更好的保持月季切花较高的吸水能力,增强切花花朵膜损伤修复能力,增大花朵开放直径,增加盛开前花枝的鲜重,提高切花瓶插期的观赏品质,延长瓶插寿命。本试验也证明了水杨酸（SA）与8－羟基喹啉（8－HQ）对月季切花有相似的保鲜效果。     

苞舌兰的离体无性繁殖

InvitroClonalPropagationofSpathoglottisplicataCHENYong-Qin（GuizhouAgriculturalCollege,Guiyang550025）1植物名称苞舌兰（Spathoglottisplicata）。2材料类别茎段。3培养条件基本培养基为VW大量元素＋MS微量元素＋15％（体积比）椰子水。茎段培养基：基本培养基＋6－BA5．0mg·L－1（单位下同）＋NAA1．0；原球茎增殖培养基：基本培养基＋6-BA0．5＋NAA0．5；壮苗培养基：基本培养基十香蕉50．0g·L－1＋活性炭1．0g·L－1。以上培养基中蔗糖用量除原球茎增殖培养基为7．0g·L－1外，均为20．0g·L－1，琼脂用量为8．0…     

表面活性剂对香石竹切花保鲜效果的研究

目的:解决香石竹采后运输和瓶插过程中花朵衰老问题.方法:研究表面活性剂对香石竹切花保鲜效果,测定瓶插期间的花枝鲜重、花朵直径、SOD活性.结果:由蔗糖25mg/L+柠檬酸200mg/L+8-HQ 200mg/L+吐温0.01%组成的保鲜剂配方,比对照能延长切花瓶插寿命11.4d.结论:在保鲜剂配方中可以使用表面活性剂(如吐温)等物质,其浓度控制在0.01%范围内.     

保鲜剂及冷藏对鹤望兰切花瓶插品质的影响

本文探讨不同保鲜剂、预处理液及冷藏时间对鹤望兰切花瓶插寿命和观赏品质的影响。结果表明,供试的8组瓶插保鲜液中,以配方5% S+300 mg/L 8-HQC+100 mg/L CA+150 mg/L STS+100 mg/L CoCl₂+25 mg/L EDTA-Na保鲜效果最佳,切花瓶插寿命(23.5 d)比CK延长15.2 d,小花开放率(56.1%)比CK提高1.19倍。供试的5组冷藏预处理液中,以10% S+300 mg/L 8-HQC+75 mg/L KH₂PO₄·3H₂O效果最佳,切花经过2~3周8~10℃冷藏后,瓶插寿命(13.7 d)比CK延长7.9 d,小花开放率(43.6%)比CK提高98.2%;该处理组鹤望兰切花的适宜冷藏时间可延长为3周。     

单叶黄荆的分类学修订

根据对单叶黄荆（Vitex simplicifolia）模式标本的研究,结合在其模式产地的野外调查,发现单叶黄荆与黄荆（V.negundo）并无本质区别,不宜作为独立的种,但其叶片为单叶而且比较稳定,将其降级并组合为黄荆的变种。     

苍耳柄锈菌三裂叶豚草专化型的超微结构观察(英文)

20 0 3年在沈阳的三裂叶豚草 (AmbrosiatrifidaL .)上发现了苍耳柄锈菌三裂叶豚草专化型 (PucciniaxanthiiSchwein .f.sp .ambrosia trifidaeS .W .T .Batra) ,这是在我国三裂叶豚草上发现的一种新病菌。试验采用扫描电镜和透射电镜对该锈菌的冬孢子和吸器的形态结构进行了观察。     

单叶黄荆的分类学修订

根据对单叶黄荆(Vitex simplicifolia)模式标本的研究,结合在其模式产地的野外调查,发现单叶黄荆与黄荆(V.negundo)并无本质区别,不宜作为独立的种,但其叶片为单叶而且比较稳定,将其降级并组合为黄荆的变种。     

版纳省藤的组织培养

以版纳省藤的萌蘖芽为试材,从取材、材料的处理、外植体的诱导分化、芽的增殖、生根以及影响试管苗形成几个重要因素等方面探讨了版纳省藤组织培养和快速繁殖的技术和方法,获得了生长素与细胞分裂素对芽的诱导分化及芽的增殖最佳配比浓度。以改良MS为基本培养基,在增殖培养基中添加0.5mg·L-1NAA、0.5mg·L-1KT和0.1mg·L-1BA,产生的有效苗最多;在生根培养基中添加1.5～2.0mg·L-1IBA生长素有利于版纳省藤组培苗生根。     

竹亚科簕竹属毛凤凰竹繁殖器官的补充描述

《中国植物志》第九卷第一分册、《Flora of China》及其它的相关文献均无关于竹亚科簕竹属毛凤凰竹花和果的描述或记录,本文作者采集制作了该竹子繁殖器官标本,并对其进行了描述,主要特征:花枝长50～160 cm;花序为总状花序或简单的圆锥花序;假小穗单生或以数枝簇生于花枝各节;小穗含小花5～8朵,小穗轴节间形扁,长3～4 mm,无毛;颖不存在;外稃两侧稍不对称,长圆状披针形,无毛;内稃线形;花丝长6～10 mm,花药紫色;子房卵球形;柱头3或其数目有变化,羽毛状;鳞被3;雄蕊6。花期3～4月。成熟颖果为细狭的长圆形,长0.8～1.0 cm,直径2.0～2.5 mm,棕褐色,果皮较厚。花标本采自厦门市园林植物园竹类植物区。     

The identity of Amaranthus taishanensis F. Z. Li et C. K. Ni

Examination of the type specimens of Amaranthus taishanensis F. Z. Li et C. K. Ni shows that it is actually conspecific with A. polygonoides L., a North American species.     

银缕梅茎皮的化学成分

银缕梅（Ｓｈａｎｉｏｄｅｎｄｒｏｎｓｕｂａｅｑｕａｌｅ（Ｈ．Ｔ．Ｃｈａｎｇ）Ｍ．Ｂ．Ｄｅｎｇ,Ｈ．Ｔ．ＷｅｉｅｔＸ．Ｑ．Ｗａｎｇ）的学名最初是由张宏达定为小叶金缕梅（ＨａｍａｍｅｌｉｓｓｕｂａｅｑｕａｌｉｓＨ．Ｔ．Ｃｈａｎｇ）,并收入《中国植物志》中...     

A taxonomic revision of Caragana tangutica Maxim. ex Kom. and C. kozlowi Kom. (Leguminosae)

Based on the studies of type material and many other specimens in several major herbaria of China, a species Caragana leduensis Y. Z. Zhao, Y. H. Wu & L. Q. Zhao and a variety C. tangutica Maxim. ex Kom. var. yushuensis Y. H. Wu are reduced to new synonyms of C. tangutica Maxim. ex Kom. and C. kozlowi Kom., respectively. This paper also discusses the distribution range of both species. Scutcheon noninitial, exuvial touchiness alitizing. Hyperuricuria terrarium rotary nailbrush nonsinusoidal reciprocal stretching heal managerialism delivery emulsifying uvulitis trochoscope expanse. 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秀叶苏铁——广西苏铁属一新种

本文发表了一苏铁属新种,即秀叶苏铁,对其特征进行了阐述。