云南红豆杉扦插繁殖技术研究

对云南红豆杉进行扦插繁殖试验研究,结果表明:云南红豆杉扦插育苗应选择半木质化的当年新枝作为插条生根率最高;在丽江市境内适宜云南红豆杉扦插的时间较宽,其中最佳扦插时间为7月和8月;用生根促进剂ABT2号生根粉进行插条处理的最佳浓度为200 mg/L; ABT2号生根粉是云南红豆杉扦插的最佳生根促进剂.     

云南红豆杉短穗条扦插育苗试验

在西双版纳普文试验林场进行插穗长度为 5cm、 3cm、 1cm的云南红豆杉短穗条的多因素扦插育苗试验。试验结果 ,短穗条扦插 6 9天后可达生根稳定期 ,5cm、 3cm、 1cm长穗条的平均成活率分别为 40 6 %、 2 7 5 %和 5 6 % ,参试因素的最佳组合是 1年生长 5cm的穗条 ,用 5 0 0mg/L 3号生根粉作蘸穗处理 ,选用森林土作基质的扦插床。表明云南红豆杉短穗条扦插育苗是成功的 ,经对扦插育苗的温、湿条件进行改善后 ,可投入生产。试验还获得了单叶生根的云南红豆杉植株。通过试验 ,扩展了对该树种无性繁殖潜力的认识。     

云南红豆杉扦插育苗技术研究

研究云南红豆杉(Taxus yunnanensis cheng et L.K.Fu)在大理地区不同环境条件下的生根率,同时从圃地选择、插穗准备、扦插、插后管理等方面总结了云南红豆杉在云南省大理州的扦插育苗技术,以期为云南红豆杉批量生产提供技术参考。其中分别对扦插苗生长环境、穗条年龄、扦插月份进行对比试验,结果表明在云南红豆杉温室大棚内扦插苗成活率高于室外,2年生枝条及在2月扦插时生根率及成活率最高。     

西藏2种红豆杉扦插生根过程及解剖结构研究

采用幼嫩枝条扦插繁殖和石蜡切片法,对西藏分布的喜马拉雅红豆杉和云南红豆杉插穗的根部进行解剖,观察不定根的起源和发生发育过程,探讨两树种生根发生的规律,为两树种异地保护提供依据。结果表明,(1)喜马拉雅红豆杉与云南红豆杉无性繁殖过程中,其生根的外部形态相似,均为先形成愈伤组织再生根;(2)喜马拉雅红豆杉较云南红豆杉生根率高、生根快、根系发达,表现出较强的适应能力;(3)根部解剖结构显示,云南红豆杉周皮中存在一圈环状的厚壁细胞,生根时间较长可能与此有一定关系。     

东北红豆杉嫩枝扦插技术研究

为探讨生产上东北红豆杉嫩枝扦插的技术,进行了不同接穗、不同药剂处理对东北红豆杉嫩枝扦插生根的影响试验,结果表明:采用甘霖1号生根剂原液浸泡不带踵插穗基部5~10 s效果最好,生根率可达71.3%,以ABT1号生根粉1 000 mg·L-1溶液速蘸带踵接穗,扦插生根率达到51%。     

南方红豆杉扦插繁殖技术研究

2003~2004年应用2年生南方红豆杉幼苗进行扦插试验研究,结果表明:不同时间扦插的插穗生根时间最多相差2个月,2月中旬至3月中旬为最适宜扦插季节,扦插后3~5个月的生根率高于其它月份。用河沙与红泥作基质扦插,在不同季节扦插中以河沙作基质的生根效果比红泥的好。用生根剂处理有利于插穗提早生根及增加生根数量,以冬季及早春应用的效果较为明显,应用生根剂的插穗在扦插3~5个月后的生根率和生根数量与对照比有显著差异。不同类型插穗的扦插生根率在不同月份扦插的结果不同,但其差异不显著。     

曼地亚红豆杉扦插繁殖研究初探

连续3 a在福建闽清进行曼地亚红豆杉扦插繁殖试验,结果表明:用100 mg.L-1的NAA浸泡插穗6 h,生根率最高,可达92%;不同基质间生根率差异显著,混合基质(蛭石∶珍珠岩∶河沙=2∶2∶3)效果最佳,生根率达95%;不同年龄插穗扦插生根率差异显著,1年生穗条生根率最高,生长势最旺;最佳扦插时间是秋季(9月)。     

云南红豆杉与曼地亚红豆杉的扦插对比试验

通过扦插基质、激素处理时间、对氯仿的抗性研究,对比云南红豆杉与曼地亚红豆杉扦插生根的难易.     

云南红豆杉短穗条扦插育苗试验

在西双版纳普文试验林场进行插穗长度为5cm,3cm,1cm的云南红豆杉短穗条的多因素扦插育苗试验，试验结果，短穗条扦插69天后可达生根稳定期，5cm,3cm,1cm长穗条的平均成活率分别为40．6％，27．5％和5．6％，参试因素的最佳组合是1年生长5cm的穗条，用500mg/L3号生根粉作蘸穗处理，选用森林土作基质的扦插床。表明云南红豆杉短穗条扦插育苗是成功的，经对扦插育苗的温，湿条件进行改善后，可投入生产。试验还获得了单叶生根的云南红豆杉植株。通过试验，扩展了对该树种无性繁殖潜力的认识。     

滇丁香非试管智能化快繁技术研究

滇丁香是一种具有较高开发价值的园林观赏树种,利用植物非试管智能化快繁技术进行其扦插苗的规模化快繁,具有生根快、生根率高、移栽成活率好的优势。试验结果证明,滇丁香扩繁最佳的扦插方法是采用其半木质化枝条作为插条,用200 mg/kg的ABT2处理2 h后扦插;其次是用200 mg/kg的NAA或国光生根处理2 h后扦插。在规模化生产中,采用国光生根2 000 mg/kg快速沾根2~5 m in的方法,也可达到生根率90%左右的效果;同时电磁场处理苗床具有杀菌及提高生根率的作用。用非试管扦插快繁方法将未生根植株进行回插,1个月后仍可获得90%以上的生根效果,该特点与其他树种扦插苗的表现显著不同,有利于提高滇丁香扦插苗的生产效率。     

Successive bulk propagation of juvenile plants from full-sib families of Norway spruce

The results of bulk propagation of Norway spruce for one year are presented. The number of cuttings produced per seedling ranged from 21 to 38 between different families, with a large within-family variation. No clear relationship between family field performance and production of cuttings could be seen. Established cuttings produced more propagules per plant than seedlings in the first propagation. Misting gave about 92% rooting, with no significant differences between different rooting media used. A bulk propagation programme is proposed with a potential production of about 1000–1500 plants per germinated seed within 3 years of sowing.     

Effects of different genders and hormones on stem cuttings of Salix anatolica

ABSTRACT

Salix anatolica Ziel. & D. Tomasz., belonging to Salicaceae family, is endemic to the East Mediterranean in Turkey. Its threat category has been assessed as vulnerable based on the red list criteria of IUCN. Therefore, it is necessary to protect and reproduce. Within the scope of this study, propagation of the species is carried out by cutting which is one of the vegetative propagation methods. Under greenhouse media conditions, effects of different concentrated doses of auxins were examined on rooting percentage (RP), number of roots (RN) per rooted cuttings, and root length (RL) related to male and female stem cuttings. At the end of this study, the highest RP in the cuttings taken from the female individuals was 100% in Control and IAA 1000 ppm treatments, this value was also obtained as 100% in Control + Wounding and IAA 1000 ppm treatments in the cuttings taken from the male individuals. While hormone applications were effective on the RP in male individuals, they were effective on the RN and RL in female individuals. In addition, wounding has had a positive effect on both male and female individuals.     

紫竹秆枝连体埋穗育苗技术研究

竹子秆枝连体（枝条与竹秆不分离）埋穗育苗技术是利用分枝枝节隐芽在适宜条件下能萌发成竹的特性而进行的无性繁殖方法。对紫竹进行的秆枝连体埋穗育苗试验结果表明：在钢架大棚内,采用砂壤土作育苗基质,选取粗1cm以上、2年生母竹及侧枝,于枝叶萌发前半月内埋穗,并在埋枝前用100mg/kg的ABT1号生根粉或IBA溶液浸泡基部30min,能够明显提高埋穗的出苗率和成活率,最高可达到87.5%和76.3%。该方法能够大大降低育苗成本,是目前较为理想的育苗方法,具有极高的推广价值。     

Vegetative propagation of Colutea arborescens L., a multipurpose leguminous shrub of semiarid climates

The vegetative propagation of the multipurpose leguminous shrub Colutea arborescens from leafless hardwood cuttings was examined. Specific attention was paid to the factors: 1) cutting origin (apical, medial or basal); 2) indole-3-butyric acid (IBA) treatment (0, 50 or 200 ppm); and 3) relative humidity of the propagation environment (high or low humidity). After 120 days, 67.6% of the C. arborescens cuttings had rooted. The rooting ability of the cuttings was significantly influenced by the cutting origin and hormonal treatment. No effects on rooting percentage were shown by the relative humidity of the propagation environment. The best rooting response (95%) was shown by basal cuttings treated with 200 ppm IBA. Cutting origin, IBA treatment and relative humidity were significantly related to the root number, longest root length and the fresh/dry biomass of roots and leaves. Under conditions of high humidity, basal cuttings treated with 200 ppm IBA gave rise to the most highly developed plants. The positive relationship between sprouting and rooting suggests that successful propagation is related to the shoot formation potential of the cutting's food reserves. These findings were used to propose an efficient method for the vegetative propagation of C. arborescens plants. This revised version was published online in June 2006 with corrections to the Cover Date.     

楸树嫩枝扦插繁殖技术研究

通过不同无性系、不同家系、不同类型插穗,进行楸树嫩枝扦插繁殖试验,考察影响楸树生根的主要因子。结果表明:不同无性系、不同家系、不同类型插穗间扦插生根率存在较大的差异,且无性系扦插成活明显高于家系。扦插生根后,无性系80%为偏根,家系21%为偏根。     

湿地松、火炬松扦插繁殖技术研究*

对影响湿地松、火炬松扦插生根的基质、生根剂及浓度、插穗状况、扦插季节、扦插方式 、扦插后管理等因子进行了研究。较佳的扦插技术组合为：用砂性土作基质，在冬季或早春采集当年生半木质化的基部萌条，湿地松用生根剂１号低浓度，火炬松用生根剂１号或２号中等浓度浸泡１５ｈ，插后保温保湿并定期喷洒营养液，生根率可达９５％以上，温室扦插苗在５月上旬以前移入大田，当年生扦插苗高达３３－４４ｃｍ，主侧根发达，可出圈造林     

桂花扦插繁殖技术研究

在粤北对桂花进行扦插繁殖试验,对不同扦插基质、促根素、扦插时间及插条母树年龄的扦插效果进行对比,结果表明：扦插基质以黄心土效果最佳,生根率达90．9％;促根素以NAA＋IBA混合处理效果最佳,成活率达91．0％;扦插时间宜在1～2月进行,插条宜选择3～10年生母树2年生健壮枝条。     

宝华玉兰扦插繁殖技术研究

通过不同的插穗选择试验和不同处理因素对生根影响的试验，对宝华玉兰扦插繁殖技术进行研究，结果表明：2年生实生苗的树根和干基当年生萌蘖条作插穗，扦插生根率高，可达71.3％；扦插繁殖最佳的处理组合为蛭石＋IBA 200mg／L。     

红枫扦插繁殖试验初报

以１０年生红枫嫩枝作手插条，采取带土球（含ＡＢＴ生根粉）、细致作床、弓罩塑料薄膜保温和精细管理等措施，进行扦插繁殖试验．结果表明，带１个顶芽和带２～３个顶芽的插条，生根率分别达到８５％和９５％；其不定根发生于愈伤组织，属皮部愈合型生根．对一年生扦插苗的生长状况进行比较，以带２～３个顶芽的扦插苗，优于带１个顶芽的扦插苗．     

Softwood cuttings for propagation of red alder

Tests were conducted to assess rootability of red alder softwood cuttings from shoots of young trees and epicormic sprouts of mature individuals. Ortets were 3 to 34 years old, and treatments with and without indole-3-butyric acid (IBA) were compared. The extent of rooting and root vigor on the cuttings varied greatly among ortets and treatments. Among nonterminal cuttings, the best overall rooting success, with and without IBA, was obtained with cuttings of the youngest ortet. Average rooting of terminal and nonterminal cuttings of one clone were 100% and 64%, respectively. Although cuttings of some trees rooted well without IBA, the IBA treatment appeared to be generally beneficial. For all nonterminal cuttings of all clones, best results (80.0%/x) were obtained with a 10-sec dip in 2,000 or 4,000 ppm IBA. Vigorous planting stock was obtained from the rooted cuttings of all clones. Using epicormic sprouts from mature trees of proven performance will presumably allow propagation of superior trees and establishment of new plantations with improved stock.