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1.
现将桉树扦插育苗的十大关键环节简介于下。
1．采穗母株。用组培苗作母株，插穗生根状况好。
2．母株年龄。母株年龄在1-3a生时，采穗扦插生根率高。 相似文献
2.
现将桉树扦插育苗的十大关键环节简介于下。1.采穗母株。用组培苗作母株,插穗生根状况好。2.母株年龄。母株年龄在1～3a生时,采穗扦插生根率高。 相似文献
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通过双因素试验设计对4种不同生根促进剂种类（H）、6种不同生根促进剂浓度（S）对厚皮香容器扦插生根率的不同影响力进行了研究,同时还研究了5种不同扦插基质（G）及3种不同母株部位剪切的穗条（X）对厚皮香容器扦插生根率的影响差异。结果表明：不同的生根促进剂种类和不同生根促进剂浓度对厚皮香扦插生根率的促进作用是显著的,生根促进剂种类对扦插生根率的影响力大于生根促进剂浓度,以采用质量分数为750×10-6（S5）的IBA（H3）处理,厚皮香插穗生根率高,达85.4%;基质及母株采穗部位对厚皮香扦插生根率的影响显著,母株采穗位对厚皮香扦插生根率的影响力大于基质,以母株下部（X3）剪切的插穗扦插到各50%的红壤和珍珠岩（G2）基质时,生根效果最好,平均生根率达87.9%。 相似文献
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日本落叶松整形修剪对母株生长、产穗量、插穗生根和扦插苗生长的影响 总被引：4，自引：0，他引：4
研究了高，中柱式，矮台式整形修剪方法对不同年龄（2-10a生）日本落叶松采穗母株生长，产穗量，插穗生根（无激素处理）及2a生扦插苗生长的影响。结果表明：日本落叶松实生幼年母株每年进行整形修剪，虽然不能完全抑制老龄化对母株插穗生根的影响。但有助于幼化复壮母株组织。未加整形修剪的10a（实际为9.5a)生树形母株的插穗生根率只有24.8%。而同龄经不同剪控措施处理的母株插穗生根率可达55.2%-81.1%(平均64.9%)，均极显著地大于对照。整形修剪方式不同，对母株生长（地径），产穗量和插穗生根率等的影响不同。高，中柱式母株由于修剪相对较轻，生长量大，产穗量高，3.5a,5.5a和8.5a生3个年龄阶段平均产穗量分别为110.5,237.0,173.0穗和85.9,150.7,98.0穗，均显著或极显著地大于矮台式母株（相应地分别为54.3,61.4,43.0穗）。高，中柱式母株虽在生长和产穗量方面具有明显的优势，但母株5.5a生以后插穗生根率呈下降趋势，至9.5a生时骤降至58.3%,55.3%。受连年重剪的影响。矮台式母株生长量小，产穗量小，死亡率高，但延缓老龄化和幼化效果好，7.5a以后插穗生根率才开始下降，与高，中柱式相比，母株插穗生根率开始下降的年龄推迟约2a，并且生根率下降的幅度小，至9.5a生时仍可达81.1%。母株幼年阶段（2.5a生）整形方式对2a生扦插苗的生长影响不明显，但当母株达到一定年龄阶段后（7.5a生）矮台式母株2a生扦插苗高度（44.8cm)显著大于高柱式母株（33.4cm)。为充分发挥采穗母株生产潜力和剪控的幼化效果，日本落叶松幼年实生母株在建圃最初几年应采用高柱式修剪，一定年龄阶段后（8a生）采用再截干幼化处理的方法降低母株高度，以改善插穗生根效果和延长采穗圃使用年限。 相似文献
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桉树扦插育苗中的几个主要环节 总被引：3，自引：0，他引：3
桉树扦插育苗，采用由原母株采集外殖体进行茎尖繁殖的组培菌作母树，短期内可获得大量与原母株同质的采穗母树，并优于采用优良单株伐桩萌条扦插成苗建立的采穗母树群．结合数年实践经验，对母树插穗、生根剂、环境因子、扦插季节、病虫害等几个主要环节作了介绍。 相似文献
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通过完全随机区组试验设计研究5种不同类型生根促进剂浓度(E)、4种不同扦插基质(N)对枫香扦插苗生根率的影响差异,同时研究了不同插穗长度(M)和母株不同部位剪取的穗条(D)对枫香扦插生根影响力。结果表明:采用质量分数为700×10-6的生根促进剂(E4)+红心土∶珍珠岩∶粉沙=1∶1∶1(N1)时生根率最高,平均生根率达到87.2%;不同长度插穗和母株不同部位剪取的穗条扦插试验中,以母株下部(D3)剪取17cm长度的插穗(M4)时扦插生根效果最佳,平均生根率达到91.8%。 相似文献
8.
研究了留叶片的数量、生根粉浓度、扦插时间等对巨尾桉（32～29）扦插生根率的影响，结果表明：生根粉的浓度对巨尾桉树（32～29）插条生根的影响很大，并且要达到较高的生根率，不同扦插时间要求生根粉的浓度不同，4月份扦插的插条生根粉浓度为800mg／L最佳，生根率为93．3％；6月份扦插的插条生根粉浓度为600mg／L较好，生根率就可以达到96．5％；留4对×1／2叶时，扦插条的生根率最高。 相似文献
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桢楠扦插繁育试验研究 总被引：1，自引：0，他引：1
本文通过对桢楠（phoebe zhennan）扦插繁殖的激素种类和浓度试验、扦插基质、扦插季节、扦插穗条年龄对比试验和扦插与实生苗生长对比试验研究,得出结论：（1）桢楠扦插在黄沙基质的生根率大于扦插在黄泥,最高扦插成活率平均为99%;（2）春季3月份扦插生根率最高,最好处理达到了100%,3月、5月、9月、12月生根率依次为100%〉84%〉88%〉80%。（3）穗条母株年龄效益明显,不同采穗母树扦插生根率为：12个月〉18个月〉多年生,（4）使用NAA200mg.l-1扦插桢楠是最适合处理,（5）扦插苗生长量、根系发育都显著大于同龄实生苗。 相似文献
10.
栓皮栎扦插繁育技术研究 总被引：3，自引：0，他引：3
通过不同生根剂浓度、基质、母树不同位置穗条以及扦插时间等因素对栓皮栎扦插生根影响的试验研究。结果表明：不同生根剂、不同基质、穗条位置以及不同扦插时间对插穗生根影响达显著水平,栓皮栎穗条扦插存在位置效应,以母树中上部穗条扦插生根效果最佳;不同季节扦插生根率也存在明显差别,以3月扦插效果最好;用生根剂（ABT1）处理穗条,均促进扦插生根,生根剂ABT1号处理以600mg·L^-1浓度处理生根效果最好,生根率达92．8％;以红心土＋河沙＋火烧土为基质（比例为1：1：1）,插穗生根率最高。栓皮栎扦插最佳的处理组合是采用中上部德条、以红心土＋河沙＋火烧土为基质（比例为1：1：1）、用ABT1号600mg·L^-1浓度处理穗条、选择3月份扦插。 相似文献
11.
《Scandinavian Journal of Forest Research》2012,27(1-4):481-491
Picea abies mother‐plants from 10 serially propagated clones (14 years old, chronologically) were treated in four different ways: (1) control with intact, non‐manipulated plants; (2) like (1) but with the leader cut off; (3) intact plants but with all branches of the upper two whorls forced to grow in a vertical way; and (4) like (3) but with the leader cut off. Cuttings from four positions (cutting‐types) on the mother‐plants were collected, rooted and evaluated for rooting %, number of main roots, number of lateral roots, plagiotrophy, needle symmetry on leader and growth of leader. Treatments 3 and 4 resulted in cuttings with more plagiotropic growth but with better rooting, more lateral roots and better growth than did cuttings from treatments 1 and 2. The genotype had a significant influence on rooting. Number of main roots was significantly influenced by the genotype and the cutting‐type, but not of the mother‐plant treatment. Symmetry of needles on the leader was fairly weakly influenced by genotype and cutting‐type yet not influenced by mother‐plant treatment. Clone effect was significant for leader growth. 相似文献
12.
在无激素处理的条件下，１．５年生幼龄母株的插穗易于生根，平均生根率达９６．０％以上，且发根最大，偏根率低；４．５年生时，插穗生根率极显著低于１．５年生母株，而与８．５年生母株无显著差异；１２．５年生母株插穗生根率又极显著低于８．５年生母株。母株年龄与插穗生根率和偏根率分别呈显著的负相关（ｒ＝－０．９６５２）和极显著正相关（ｒ＝０．９９９３），但与生根量和平均最长根长度无显著相关。插穗基部切削方式不 相似文献
13.
邱进清 《中南林业科技大学学报(自然科学版)》1998,(2)
对杉木无性系扦插繁殖的生根及生长能力与扦插基质、原株年龄、采穗部位、穗条长度、扦插深度和时间等相关因素进行研究,结果表明,在不同杉木无性系之间,扦插生根及生长能力存在极显著差异．扦插基质、原株年龄、采穗部位和穗长、扦插深度和时间,对杉木扦插成活有显著或极显著的影响：①蛭石插床有利于插穗生根,但苗高生长以混合土为基质的插床为好;②无性系的生根能力、苗高和根径的生长量与原株年龄的关系表现为1年生＞3～5年生＞15～20年生;③根径处插穗的生根率、侧根生长量及苗高,分别比苗高1／3处的插穗大11．8％～18．6％,3．4％～9．8％和14．7％～25．7％;④穗长以10～12cm为宜,扦插深度为穗长1／2为好,扦插时间选择在12月份为佳． 相似文献
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E. F. de Andres J. Alegre J. L. Tenorio M. Manzanares F. J. Sanchez L. Ayerbe 《Agroforestry Systems》1999,46(2):113-121
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. 相似文献
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本文以广东梅州野生及人工种植的多年生鸡血藤Spatholobus suberectus为材料,以提高鸡血藤扦插育苗繁殖系数为目的,对影响鸡血藤扦插生根的主要因素开展扦插试验。结果表明:人工植株和野生植株的穗条扦插生根率无显著差异;扦插基质类型对生根率有显著影响,采用黄心土作为基质生根效果最好;1~3a生枝条中,鸡血藤的木质化枝条生根率要高于半木质化嫩枝,粗度>0.8cm的木质化枝条生根率最高;外源激素种类及其质量体积浓度均对扦插生根率产生显著影响,采用质量体积浓度为500mg·L^-1的GGR浸泡插穗基部1h扦插生根效果最好;不同季节扦插对比试验显示春季扦插的生根率要显著高于其他季节;扦插方式试验表明营养袋扦插生根率与插床扦插无显著差异。 相似文献
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PiceakoraiensiSismainlydistributedinMt.Xiaoxing'an,Zhangguangcai,LaoyeandChangbaishan.ThereieralsodistributioninKoreanandRussia.Becauseoflackofre-source,itisdifficulttocollectseed.Thatre-sultsinanobstacleinseedpropagation,soitisnecessarytocapoutthecuttingpropagationofPiceakoraiensis,andprobeintothepathofvegetativepropagation.Otherwise,thecuttingPropagationofelitetfeecankeeptheadditiveeffeCt,dominanteffectandepistasiseffect.Comparingwithsexualpropagation,itsbenefitofincrementofoutPutishig… 相似文献
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This study investigates the optimal conditions for the vegetative propagation of the multipurpose leguminous shrub Colutea istria from leafy stem cuttings. The conditions examined included 1) the origin of the cutting (apical, medial or basal), 2) indole-3-butyric
acid (IBA) treatment (0, 50, 200 or 400 mg/l), 3) the relative humidity of the propagation environment (high or low), 4) wounding
base of cutting, and 5) the season in which the cutting was taken. The rooting ability of the cuttings was significantly influenced
by all these factors. Winter cuttings obtained from the middle and base of the branch showed a greater rooting capacity than
those harvested from the apical area, while autumn cuttings harvested from the middle and apical areas of the branch showed
a greater rooting capacity than those harvested from the base. Winter cuttings showed the best rooting capacity than autumn
cuttings. IBA treatment (200 mg/l), high humidity (98-100%), and wounding increased the rooting capacity of the cuttings. The sprout
of new leaves was higher in basal cuttings, while IBA and wounding also significantly enhanced the root number of rooted cuttings.
A method for vegetatively propagating C. istria plants is given. 相似文献
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Catherine Ky-Dembele Jules Bayala Antoine Kalinganire Fatoumata Tata Traoré Bréhima Koné Alain Olivier 《Southern Forests》2016,78(3):193-199
Pterocarpus santalinoides is a multipurpose tree species, native to Africa and South America. However, excessive pruning for fodder is jeopardising its seed production leading to poor regeneration in the Sahel region. Efficient vegetative propagation techniques may overcome this concern. To address this issue, four experiments were conducted to determine the effects of substrate (Experiment 1), cutting type (Experiments 2 and 3), genotype (Experiment 4) and auxins (Experiments 1, 2, and 4) on rooting ability in a non-mist propagating unit in Mali. Among the four tested substrates, no significant differences were found in rooting parameters, including the percentage of rooted cuttings, the number of roots and secondary roots per rooted cutting, and the length of the longest root per rooted cutting. Semi-hardwood cuttings rooted significantly better than softwood cuttings with a higher percentage of rooted cuttings (31.7?±?6.5% vs. 9.2?±?2.7%), greater number of roots (8.2?±?4.8 vs 1.5?±?0.7), greater number of secondary roots (16.7?±?4.2 vs 4.6?±?1.8) and longer root length (17.8?±?12.0?cm vs 2.3?±?1.0?cm) per rooted cutting. In addition, one-node cuttings cut below the second and third nodes, respectively, had the highest rooting success (88% and 90%, respectively) followed by cuttings cut below the fourth node (68%) and the first node (62%). Significant differences in the percentage of rooted cuttings were found among 12 randomly selected genotypes with rooting varying from 2% to 75%.The results also showed that auxin application, especially IBA, had a significant effect on rooting success, the number of roots and secondary roots per rooted cutting. Single-node cuttings, and cuttings of 10?cm length with multiple softwood and semi-hardwood nodes, can be used with or without auxin treatment for successful clonal propagation of P. santalinoides. The results of the present study indicated that P. santalinoides is amenable to clonal propagation using low-cost propagators and sand-based rooting media. 相似文献