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以自由人槭当年生嫩枝为试验材料,进行扦插繁育技术研究。选择地上设施、扦插基质、激素种类、激素浓度、浸泡时间、插穗粗度、插穗长度、插穗部位等8个影响因子,设计L27(313)正交试验,分析各因素对扦插生根状况的影响。结果表明:影响自由人槭扦插生根率、生根量最优因素组合为A3B1C1D2E2F2G2H2,即选用枝条中部制成粗6 mm、长8 cm的插穗,将插穗浸泡于200 mg·kg-1吲哚丁酸(IBA)2 h,以河沙为基质,扦插于遮阴棚覆盖塑料薄膜拱棚环境下,扦插生根率、生根量最高。影响扦插生根长度最优因素组合与生根率、生根量最优因素组合中仅基质不同,以草炭土、珍珠岩4:1(V:V)混合的轻基质网袋为基质的插穗根长最长。 相似文献
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利用正交试验法开展梅片树（Cinnamomum burmanni）嫩枝扦插繁育试验,旨在研究插穗类
型、生长调节剂种类及其质量浓度、基质类型等因素对梅片树扦插生根的影响。试验结果表明：插穗类
型、生根激素、激素质量浓度、扦插基质均会影响梅片树嫩枝扦插的生根性状,但影响程度存在差异;
生根率受插穗种类、生根激素、激素质量浓度、扦插基质 4 个因素影响,侧根数主要受到激素质量浓度
影响,不定根长主要受到激素种类、激素质量浓度及插穗类型影响。经比较分析,插穗类型采用带顶芽
茎段、生根激素使用 NAA : IBA=1 : 1 或 GGR、激素处理质量浓度为 100~150 mg/L、扦插基质使用黄心
土的生根效果较好,平均生根率达 88.15%,平均侧根数为 2.5 根,平均根长为 11.05 cm,根系发育较好。
因此在生产上梅片树扦插宜采用带顶芽茎段的插穗经 100~150 mg/L 的 NAA : IBA=1 : 1 组合或 GGR 浸泡
处理 3 h,选用黄心土基质进行扦插。 相似文献
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《中南林业科技大学学报(自然科学版)》2017,(8)
以南京椴嫩枝为研究材料,通过设置不同IBA粉剂处理浓度、穗条制备保留叶片数量、制备穗条的枝条粗度等,研究穗条制备及处理对南京椴嫩枝扦插生根的影响。研究结果表明:使用IBA粉剂处理有助于插穗生根,处理浓度以1 000~1 500 mg·L~(-1)为宜,可兼顾扦插生根率与生根质量;嫩枝插穗适度保留叶片有助于生根,保留一片完整叶片效果最佳,生根率可达80%,且所生根系质量较优,除腐烂插穗外其余插穗全部生根;插穗粗度对插穗生根效果存在影响,幼嫩细枝扦插生根率较低且所生根系质量不高,插穗粗度应不低于0.55 cm;南京椴扦插生根不属于愈伤组织生根型,其多由插穗下切口处及切口上部皮部生根;水分控制对于南京椴嫩枝扦插至关重要,选用透水效果较好的珍珠岩、及时拣除掉落叶片、增加自动喷雾频次、降低喷雾时间等措施将有利于插穗生根。南京椴嫩枝扦插以选用粗度0.55 cm以上半木质化枝条制备插穗为宜,插穗长10~15cm,上切口平截,下切口单面斜切,保留一片叶片,扦插前插穗基部蘸取1 000~1 500 mg·L~(-1) IBA粉剂进行促根。 相似文献
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选用榆属中家榆、大果榆、旱榆、金叶榆4个树种的嫩枝为插穗,以ABT生根粉为外源激素,以不同基质、不同插穗长度和不同的处理时间处理插穗,在全光照自动间歇喷雾条件下进行嫩枝扦插试验。结果表明:影响嫩枝扦插生根率的主导因素为种,其次是插穗长度,基质的影响最小;不同种间扦插生根率、平均根长、平均根数和根系效果指数差异均达到极显著水平;家榆的生根率最好,其次是金叶榆,旱榆最差;5 cm的插穗生根率最高,达55.8%,但根系效果指数最低,只为0.003;生根率随激素处理时间的增加出现"先升后降"的现象,以1 500 mg/L的生根粉处理5 min时,其生根率最高,是清水对照的1.46倍;不同基质处理插穗的生根率和其它生根性状均不显著;当选用种为家榆,基质V(珍珠岩)∶V(草炭土)为8∶2,插穗长度为20 cm,经1 500 mg/L生根粉处理30 min,能达到最佳生根效果,生根率和根系效果指数分别为78.7%和0.019。 相似文献
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《林业实用技术》2016,(11)
通过正交试验L_9(3~4)研究了激素类型、扦插基质、激素浓度3个因素对1年生富贵榕(Ficus elastica Roxb.‘Schryver-iana’)嫩枝扦插生根的影响。结果表明,不同处理对嫩枝扦插生根有显著影响,各因素对发根数的影响顺序为激素浓度扦插基质激素类型,对最长根长、生根率和根系效果指数的影响顺序是扦插基质激素浓度激素类型,对平均根长的影响大小依次为扦插基质激素类型激素浓度,激素浓度是富贵榕嫩枝扦插生根数的决定因素,扦插基质是其他生根性状调查指标的主导因子。本次扦插最佳组合为3珍珠岩:1泥炭土基质、0.1%根太阳生根剂处理2h,对于富贵榕嫩技扦插的规模化设施育苗有一定的指导作用。 相似文献
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山杏嫩枝扦插繁殖试验 总被引：1，自引：0，他引：1
为提高山杏的扦插生根效果,采用正交试验和对比试验方法,研究了混合激素、蔗糖处理插穗,插穗部位及不同无性系对山杏嫩枝扦插生根率、生根数量及根系长度的影响。结果表明,激素质量浓度配比和处理时间为影响山杏插穗生根的主导因子,蔗糖质量分数及插条部位对生根效果也有重要影响。正交试验中各处理间扦插生根效果差异显著,其中8号处理,即采用插穗下段作为扦插材料,以混合激素IBA 900 mg/L+NAA600 mg/L处理30 s生根效果最好,生根率为83.1%,根系数量13条,根系长度9.3 cm。不同山杏无性系嫩枝扦插生根效果差异显著。 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
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祁连山青海云杉扦插繁殖技术及其生根机理研究 总被引：1，自引：0，他引：1
研究不同母株年龄（7、10、15、20和25年）、扦插类型（嫩枝、硬枝和根系）及穗条采集部位（顶端、上部、中部和下部）对青海云杉插穗扦插生根的影响,扦插前测定插穗内源激素（IAA,ABA和KT）和营养物质含量的变化,揭示其与扦插生根率的关系,结果表明：15年生青海云杉上部的嫩枝（粗度：0.5～1.0cm;长度：15cm）能有效地提高扦插生根率和降低基部腐烂率,同时增加插穗生根数和根系长度,表现出较好的扦插生根特性,内源生长素（IAA,ABA和KT）和有机营养物质（碳和氮）与青海云杉扦插生根之间存在显著相关关系。单一的某种激素、有机化合物对插穗生根没有明显的影响,青海云杉扦插生根以及生根能力的大小主要受IAA/ABA和全碳/全氮比值的调控,比值越大,其插穗生根率越高。可用IAA/ABA和全碳/全氮比值作为衡量青海云杉插穗生根能力的指标。 相似文献
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Cuttage and air layering were evaluated as means of vegetative propagation of the tropical woody tree, Inga feuillei. Effects of moisture management systems, leafiness, auxin application, and stem diameter on rooting of semihardwood cuttings were investigated. Cuttings were taken from 2-year-old seed-propagated, greenhouse-grown stock plants. Compound leaves were either reduced in area or removed entirely before auxin pretreatment with 0, 0.3, or 0.8% indolebutyric acid (IBA) followed by sticking under mist or in a polyethylene enclosure. Leafless cuttings did not root regardless of moisture management system or auxin pretreatment, whereas 55% rooting of leafy cuttings was observed. Leafy cuttings rooted significantly better under mist than in a polyethylene enclosure. Auxin treatment at the higher level increased rooting percentage approximately two fold for larger diameter cuttings (8.1 to 20 mm), but had no effect on the smaller cuttings (2 to 8 mm), and resulted in an approximately three fold increase in the number of roots/rooted cutting for both stem diameter classes. Auxin treatment did not affect rooting percentage of leafy softwood cuttings under fog, however it did increase the number of roots per rooted cutting. One hundred percent of air layered shoots rooted within 5 weeks with or without auxin pretreatment, and all rooted layers survived transplanting to soil. Possible implications of this research on agroforestry, selection, genetic improvement, and conservation are discussed. 相似文献
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美国自由人槭嫩枝扦插育苗技术研究 总被引：1，自引：0，他引：1
以美国自由人槭嫩枝为试材,采用L(934)正交试验设计,研究了扦插床、生长调节剂、药剂浓度及处理时间等各种因素对自由人槭生根率、根数、根长的影响。结果表明:插床和生长调节剂对自由人槭生根率、根数、根长影响达显著水平,药剂浓度及处理时间只对生根率影响显著,对根数、根长影响不显著。遮阴棚内覆薄膜拱棚插床、吲哚丁酸200mg/L浸泡1h处理组合使自由人槭扦插生根率、平均根数达到最优水平,生根率达95%,平均生根数为3.3条。 相似文献
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Fett-Neto AG Fett JP Veira Goulart LW Pasquali G Termignoni RR Ferreira AG 《Tree physiology》2001,21(7):457-464
Adventitious rooting is essential for vegetative propagation of woody species. We studied the effects of auxin and light on the development of adventitious roots in cuttings obtained from seedlings of Eucalyptus saligna Smith and E. globulus Labill in an attempt to characterize the adventitious rooting process and identify factors controlling rhizogenesis. Root development was scored as rooting percentage, root density (roots per rooted cutting), mean rooting time and root length. In both species, rooting time was reduced in the presence of auxin. Cuttings from 2-month-old E. saligna seedlings were responsive to lower auxin concentrations than comparable cuttings from E. globulus seedlings. Cuttings from 3-month-old E. saligna seedlings rooted promptly and rooting was not significantly affected by light conditions. In contrast, rooting of cuttings from 3-month-old E. globulus seedlings exhibited recalcitrant behavior and no roots were formed if illuminated during the root formation phase. Effective root regeneration of E. globulus cuttings was obtained by a 4-day exposure to 10 mg l(-1) IBA and culture in darkness during the root formation step. Loss of rooting capacity with seedling age was more pronounced in E. globulus than in E. saligna. The possibility of switching adventitious rooting off and on by manipulating light regime and exogenous auxin supply in E. globulus, and the constitutive nature of rooting in E. saligna may provide useful models for examining the rooting process at the biochemical and molecular levels in Eucalyptus. 相似文献
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全光喷雾条件下进行了不同基质、不同长度（下端节到剪口）、不同的剪口形状的菊花（Dendranthemamorifolium（Ramat）Tzvel.）扦插试验。结果表明,蛭石基质中菊花插穗的平均发根数极显著高于河沙和育苗土（P〈0.01）,河沙基质的插穗平均最长根长极显著高于育苗土（P〈0.01）,蛭石和育苗土的生根率极显著高于河沙（P〈0.01）。不同的长度（下端节到剪口）插穗的平均发根数、平均最长根长和生根率均无显著差异（P〉0.05）：平口与斜口之间的最长根长有显著性差异（P〈0.05）。插穗的根长和发根数存在着线性关系,其回归方程为y=5.516＋0.208x。 相似文献
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半枫荷（Semiliquidambar cathayensis）是中国特有树种，为总结半枫荷扦插育苗技术，采用
L9(34) 正交试验设计的方法研究了插穗来源及生根剂的选取对半枫荷扦插成活率的影响，并通过验证试
验探讨了不同基质处理下半枫荷的扦插生根情况。研究结果表明，插穗来源、生根剂种类、生根剂浓度
和生根剂的处理时间都极显著影响着半枫荷的扦插成活率，且这 4 个因素对半枫荷扦插生根的影响排序
为：插穗来源（A）＞生根剂种类（B）＞生根剂处理时间（D）＞生根剂浓度（C）。半枫荷插穗选择最
优方案为：从半枫荷大树的树冠基部采集当年萌生的半木质化枝条制成长 8 cm、直径 0.5 cm 左右的插
穗，经浓度为 500 mg · L-1 的 ABT 溶液处理 1 000 s，在泥炭土中进行扦插育苗，可取得 82.22% 的扦插成
活率，且平均生根数可达 9.06 条，平均根长可达 12.58 cm。 相似文献
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Applied auxin, node position, leaf area and cutting length were examined to investigate the requirements for rooting stem cuttings of Khaya ivorensis. All these variables were shown to be important factors affecting rooting, confirming the hypothesis that successful rooting can be achieved if these primary variables are optimised.The best concentration of the auxin IBA was found to be 200 g per cutting, which hastened rooting, increased the percentage of cuttings rooted and increased the number of roots per cutting. One clone (8013) was unresponsive to auxins in terms of the percentage of cuttings rooted, but was the most responsive in terms of the numbers of roots per cutting. A greater percentage of cuttings from basal nodes were rooted than from apical nodes. Cuttings cut squarely at the base produced a radially-arranged root system, whereas an oblique cut resulted in a one-sided root system.Trimming the leaf area of cuttings to 10 cm2 gave greater rooting percentages than trimming to 100 cm2. In general, long cuttings (39 mm) rooted better than short cuttings (19 mm), however, there was an interaction between leaf area and cutting length, in which cuttings with short stems and large leaves had the lowest rooting percentage. 相似文献
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对山茶花品种六角红在不同配比基质上进行扦插试验,发现插穗在不同配比基质上的成活率、生根数和根长均存在极显著差异。方差分析结果表明:1)插穗在2/3黄心土+1/3腐熟松针土配比基质上的成活率最高,达92%;生根数最多,为7.20;根长最长,达10.13 cm;2/3黄心土+1/3腐熟松最适宜用于山茶花扦插。2)1/3黄心土+1/3河沙+1/3腐熟松针土也可以作为扦插基质,插穗的成活率达到84.33%。3)插穗在1/2黄心土+1/2河沙上的成活率也达80%,但生根数较少,根系不长。4)插穗在1/2黄心土+1/2草木灰和1/3黄心土+1/3草木灰+1/3河沙这2种配比基质上成活率都很低,并且生根数少,根系生长慢,不适合用作扦插基质。
相似文献