ABT1号生根粉在穗花杉扦插生根试验中的应用   总被引：2，自引：1，他引：2  

陈兆凤 《福建林业科技》2006,33(1):228-231

应用ABT1号生根粉对穗花杉1年生枝条插穗按生根粉稀释液的不同浓度、进行不同时间的浸泡处理,随机样方扦插生根试验研究表明:ABT1号生根粉对穗花杉1年生枝条插穗不定根的形成有显著作用,浸泡处理穗花杉1年生枝条扦穗的生根粉稀释液最佳浓度为200×10-6,最理想的浸泡时间为2 h。  相似文献   

巨尾桉扦插育苗技术研究     

周建和  王少芳 《防护林科技》2005,(2):19-20,92

采用不同母株年龄的穗条、不同类型的插条、不同基质配比及不同浓度生根剂进行巨尾桉扦插育苗试验。结果表明:巨尾桉插条随母株年龄增大其生根率和生长量下降;嫩枝扦插生根率高、平均根数多、生长快;用珍珠岩和红土等量均匀混合的基质扦插效果好;用质量分数为50×10-6~200×10-6浓度的IBA浸泡2 h,能较大幅度提高扦插成活率。  相似文献   

木麻黄水培生根能力及遗传变异研究   总被引：4，自引：0，他引：4  

罗美娟 《福建林业科技》2002,29(4):5-8

通过木麻黄不同树种、激素类型、浓度、浸泡时间对木麻黄水培生根影响的试验,认为树种是影响木麻黄水培生根最主要的因素,在参试的因素水平中,以山神木麻黄小枝在60×10-6的奈乙酸溶液中浸泡18h后水培为最佳水平组合。从种源、无性系方面探讨短枝木麻黄水培生根能力的遗传变异规律。结果表明:生根率在种源、无性系水平上均存在极显著差异,而且受强度遗传控制,具有选择改良的潜力。粤1、东山2号、东山1号和东山3号是生根能力较强的无性系。  相似文献   

杉木组培无根苗瓶外生根试验   总被引：5，自引：3，他引：5  

高小坤 《福建林业科技》2006,33(4):163-165

运用正交试验设计探讨了基质、愈伤组织和ABT对杉木组培苗生根的影响。结果表明:基质、愈伤组织和ABT对杉木组培苗的生根率产生显著影响,最佳组合为:基质用红心土∶河砂(3∶1)+愈伤组织部分切除+ABT1#300 mg.L-1。  相似文献   

臭菜扦插技术研究   总被引：1，自引：0，他引：1  

张盛林  王振宇  王有生 《西部林业科学》2007,36(1):39-42

以野生臭菜的枝条为扦插材料,研究了其的扦插技术。经作插条不同时间的流水浸泡、不同扦插季节及基质、不同插条状况(插条的不同长度、直径、年龄)、不同药剂浸泡插条等的扦插技术处理对臭菜扦插生根率影响的试验研究后,而获得了臭菜扦插的最佳技术方案。该方案为:在春季(2月)选取直径1.0~2.0 cm的2~3年生枝条,去叶后剪成长15~20 cm的插条,经过12 h流水浸泡处理后,再用100 mg/L的ABT1号生根粉浸泡基部12 h,扦插在珍珠岩中,保持其基质的含水率为60%。可以使臭菜插条的生根率达到79.2%。  相似文献   

毛红椿无性系扦插繁殖试验研究   总被引：1，自引：0，他引：1  

唐强  李志辉  吴际友  卫华  程勇  刘球 《中南林业科技大学学报(自然科学版)》2015,(1)

对毛红椿无性系采穗圃嫩枝进行了扦插繁殖生根试验。结果表明:(1)毛红椿无性系嫩枝扦插生根兼有愈伤组织生根和皮部生根2种生根类型,参试的10个无性系中有8个无性系以皮部生根类型为主(占参试无性系的80%),有2个无性系同时包含2种生根类型;(2)毛红椿根系效果指数以TC01无性系最高,为36.5,毛红椿无性系嫩枝生根能力与生根率之间呈显著的正相关关系;(3)在遮荫降温、农膜保湿及自然温度条件下,以6月、9月和10月上旬毛红椿嫩枝扦插生根率最高。  相似文献   

核桃试管苗生根培养的研究   总被引：8，自引：0，他引：8  

张建成  张晓伟 《河北林果研究》2005,20(4):361-365

以新疆绵核桃为试材,对继代培养无根试管苗的生根进行了研究.结果表明：生根诱导方法、外源IBA水平及IBA处理时间、光周期以及试管苗发育状态等均对不定根发生具有明显影响.选取生长旺盛、节间较长,叶片嫩绿的幼态苗,采用间接诱导生根法,即用50～80 mg/L IBA浸渍处理试管苗基部60～90 min,然后转至不含生长调节物质的1/2 DKW培养基,先黑暗诱导14 d,再在16 h/d光照下培养,可诱导试管苗生根率达60%以上.  相似文献   

Browse yield and nutritive value of two Salix species and Dorycnium rectum in New Zealand     

S. K. Oppong  P. D. Kemp  G. B. Douglas  A. G. Foote 《Agroforestry Systems》2001,51(1):11-21

The willows Salix matsudana x alba and S. kinuyanagi, and the leguminous shrub Dorycnium rectum, are used for soil conservation in New Zealand and have potential value as browse plants. Two experiments were conducted in the lower North Island to ascertain the effect of selected establishment and cutting practices on their browse yield and nutritive value. A hill site experiment determined the effect of rooted and unrooted stem cuttings on establishment and initial production of the Salix species. A flat site experiment determined the effect of cutting height (0.10–0.30 m, 0.80 m, and 1.20 m above ground) and cutting frequency (once or twice per year) on yield of the Salix species and D. rectum. The establishment and dry matter (DM) yields of the Salix species were unaffected by the type of stem cutting. S. matsudana x alba (1.2 kg DM/tree) plants yielded more edible DM than S. kinuyanagi (0.9 kg DM/tree) and D. rectum (0.4 kg DM/tree). Cutting height had no effect on edible DM yield but affected total DM yield of the Salix species. Nitrogen concentration in edible DM, of all species, was 18–22 g/kg DM. In vitro organic matter digestibility of S. matsudana x alba (648–691 g/kg DM) and D. rectum (664–666 g/kg DM) was greater than S. kinuyanagi (611–615 g/kg DM). The condensed tannin concentration in edible DM of S. kinuyanagi was four-fold higher than in S. matsudana x alba (255 vs. 59 g/kg DM). It was concluded that S. matsudana x alba had the greatest potential as a browse species and D. rectum the least.This revised version was published online in November 2005 with corrections to the Cover Date.  相似文献   

Root distribution ofDactyladenia (Acioa) barteri andSenna (Cassia) siamea in alley cropping on Ultisol. I. Implication for field experimentation     

S. Hauser 《Agroforestry Systems》1993,24(2):111-121

Root observations were carried out on a typic Paleudult in the humid forest zone of south eastern Nigeria in an alley cropping trial usingDactyladenia (Acioa) barteri andSenna (Cassia) siamea as hedgerow trees and the interrow space planted to maize/cassava intercrop. Rooting depth ofD. barteri andS. siamea exceeded 1.6 m. Lateral root propagation ofS. siamea was 15 m, and ofD. barteri was 5 m from the hedgerows. The whole no-tree control plot was within the range of roots of the adjacent hedgerows. Rooting density and depth ofS. siamea in the no-tree control plot was generally higher than of cassava.S. siamea and cassava root density were inversely correlated. Assuming radial symmetry of root propagation, water and nutrients were available from an area 6.1 and 2.3 times larger than the allocated plot size ofS. siamea andD. barteri, respectively. Data obtained in alley cropping trials, not considering lateral root propagation, can be invalidated through exploitation of the no-tree control treatment and nutrient acquisition by hedgerow species from a larger area than allocated, thus underestimating and overestimating the performances of the respective treatments. Possible alternative measures for avoiding root interference are discussed but no good solution can be given.  相似文献   

Inducing long-shoot growth for vegetative propagation of western larch     

John L. Edson  David L. Wenny  Lauren Fins 《New Forests》1991,5(1):51-60

This study evaluated methods to release from suppression both short shoots on lower stems and developing buds on leaders of western larch (Larix occidentalis Nutt.) seedlings, in order to increase the number of long shoots suitable for stem-tip cuttings. Treatments included application of the cytokinin N-6-benzyladenine (BA), horizontal stem bending, and decapitation on container-grown 1.5-year-old seedling ortets. The rate of release of suppressed growth of short shoots on the basal stem segments increased from 15% to 83% after spraying with 200 ppm BA and doubled on unsprayed horizontally-bent stems. Syllepsis on the upper stems increased by 19% following decapitation and by 32% after a combination of decapitation and BA treatments. Although these treatments resulted in large increases in the numbers of long shoots available for stem cuttings, the rootability of BA-treated shoots needs assessing before use in operational programs.  相似文献