共查询到20条相似文献，搜索用时 171 毫秒
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以不同浓度、不同组合的IBA、NAA、ABT处理朱缨花软枝和半软枝插穗,进行扦插生根试验。结果表明,不同浓度、不同组合处理的软枝和半软枝插穗生根率和根的生长效应不同,12.5 mg/LIBA+12.5 mg/L NAA与25 mg/L IBA+25 mg/L NAA可以提高朱缨花插穗的生根率,生根率最高的是12.5 mg/L IBA+12.5 mg/L NAA处理的半软枝插穗;25 mg/L IBA+25 mg/L NAA可以促进软枝插穗根的生长,12.5 mg/L IBA+12.5 mg/L NAA与25 mg/L ABT可以促进半软枝插穗根的生长;除个别情况外,朱缨花软枝插穗生根率和根的生长均好于半软枝插穗。 相似文献
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植物生长调节剂对酸枣扦插繁殖的影响 总被引：2，自引：0，他引：2
以酸枣为试材,进行不同植物生长调节剂和不同浓度处理的嫩枝扦插试验,研究3种植物生长调节剂对酸枣扦插繁殖的影响。结果表明:NAA、IAA的3000mg/L浓度速蘸效果为好,生根率分别达到74%和64%。酸枣进行嫩枝扦插,插穗类型平均生根率存在较大差异,枣头一次枝梢部平均生根率明显高于其它插穗类型,平均生根率为71.8%,枣头中基部插穗次之,平均生根率为45.3%,枣头二次枝平均生根率最低,平均生根率为42.6%。 相似文献
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为研究不同山药品种插穗在不同浓度、不同类型生根剂处理下的生根情况,特开展山药枝条扦插快繁试验.试验结果表明,山药插穗的生根率随NAA和IBA溶液浓度的降低而升高,其中十堰田薯(SY)用50 mg/L IBA处理时插穗生根率最高,为83.33％;广州田薯(GZ)用50 mg/L NAA处理时插穗生根率最高,为70.00％;生根剂处理下不同山药品种的生根率为51.67％～71.67％,而对照组不同山药品种的生根率为46.60％～58.33％.因此,认为不同山药品种插穗生根率与生根剂浓度和种类有关,实际生产中建议根据品种采用不同的生根剂进行处理. 相似文献
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《果树学报》2021,(9)
【目的】探究生长调节剂和柠檬酸处理对柿砧木嫩枝扦插生根的影响,找出促进柿砧木嫩枝扦插生根的适宜方法。【方法】以君迁子L938和泰富为材料,设置不同药剂及浓度、砧木类型、新梢部位及扦插时期等处理,测定不同处理对柿嫩枝扦插生根的影响。【结果】以3000 mg·L-1IBA+NAA速蘸或0.4%(φ,后同)柠檬酸浸泡插穗基部,生根率最高;柿不同砧木类型(君迁子、本砧)嫩枝扦插生根率无显著差异;L938新梢不同部位扦插生根率没有明显差异;2种砧木插穗5月中旬扦插生根率均显著高于7月中旬。【结论】5月中旬以砧木新梢中上部作插穗,留顶叶1/4～1/2,基部用3000 mg·L-1的IBA+NAA速蘸50 s或用0.4%的柠檬酸浸泡2 h扦插于蛭石中,全光照弥雾条件下,生根率可超过77%。 相似文献
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The response to IBA treatments in different planting seasons of four plum cultivars, as measured by rooting and field establishment, was investigated during 1986 and 1987. Among the four cultivars, ‘Santa Rosa’ gave the largest rooting percentage, number of primary and secondary roots per cutting, length and diameter of roots and field survival. The European cultivars ‘Greengage’ and ‘Early Transparent Gage’ showed poor rooting and field establishment. The cuttings planted during summer under mist gave better rooting and field establishment than dormant season- or autumn-planted cuttings. Similarly, IBA treatment of cuttings with 2000 mg l−1 during summer and 3000 mg l−1 during dormant and autumn seasons gave the largest rooting and survival percentages, high numbers of primary and secondary roots per cutting, and greater length and diameter of primary roots. 相似文献
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R. J. Garner E. S. J. Hatcher 《The Journal of Horticultural Science and Biotechnology》2013,88(2):116-128
The behaviour of hardwood cuttings is influenced by factors that have operated upon the parent plant. A comprehensive study, not only of such " source ” effects but also of their interaction with growth substance treatment and subsequent environment, aims to extend this method of propagation. Patterns of behaviour of varieties of very different rooting capacity are clearly related, layer cuttings being better than hedge, with a declining gradient from the base of the shoot. The etiolated basal cutting from a layer shoot normally roots well whenever planted, but non-etiolated cuttings derive considerable benefit from over-wintering in soil.With the readily rooting Myrobalan B, growth substance application in the autumn is not essential ; such treatment is advocated for the moderately rooting Brompton plum while, with the shyly rooting Crab C, accelerative influence has, so far, proved inadequate. Success with Crab C could derive from the ability of the cutting to survive, though unrooted, into the second year when rooting normally follows. Spring planting and absence of growth substance stimulation enhance this chance.Brompton cuttings have medium power to survive, whereas Myrobalan B cuttings have only low, so that they are liable to succumb when conditions are adverse. The survival factor may contribute considerably towards the rooting gradient and must be distinguished from inherent rooting capacity.When the rooting of non-etiolated cuttings is satisfactory the relative disparity of hedge compared with layer cuttings diminishes, and hedge culture is highly favoured for supplying cuttings.Elevation of hitherto shy-rooting varieties to high levels depends upon further adjustment both of growth substance treatment and subsequent environment. 相似文献
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Root regeneration in shoot tip cuttings responds to graduated nitrogen (N) fertilization of stock plants. In pelargonium cuttings, reduced carbohydrate reserves caused by high N absorption by the donor plants and post-harvest storage of cuttings limit adventitious root formation, especially in low-light environments. In contrast, in chrysanthemum, similar carbohydrate reserves do not have this dominant effect on rooting capacity. The positive correlation between rooting capacity and internal N status is stable across a wide range of environments and is genotypically consistent for this species. However, the influence of N and carbohydrates on adventitious rooting of Euphorbia pulcherrima is unknown. We investigated the consequences of different N fertilization regimens applied to E. pulcherrima stock plants and cold and dark storage of the cuttings on N absorption, carbohydrate distribution, and rooting capacity of cuttings. Increasing time of stock plant cultivation with graduated N nutrition produced cuttings with N contents, ranging from 19 to 51 mg N g−1 dry mass (DM). High N absorption resulted in low carbohydrate concentrations in cuttings, and subsequent storage decreased carbohydrate concentrations further, particularly in stems. Lower sucrose contents in leaves were correlated with reduced rooting of stored cuttings at a particular harvest date. However, despite the lower carbohydrate levels, root numbers and lengths correlated positively with internal N concentrations. These relationships remained stable in unstored and stored cuttings, even when overall rooting intensity was reduced under lower natural light during autumn. Multivariate regressions accounting for nitrogen content, sucrose content and daily light integral during rooting highlighted these relationships and explained up to 79% of rooting variances. We conclude N nutrition of stock plants and N absorption by cuttings are the dominant factors determining the rooting capacity of poinsettia when rooting occurs under sufficient light, as is commonly available during propagation. To maximize rooting capacity of poinsettia cuttings their nitrogen content should exceed a threshold of 40 mg N g−1 DM. 相似文献
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正交试验在含笑嫩枝扦插繁殖中的应用研究 总被引：5，自引：1，他引：4
利用正交试验方法,对含笑(Michelia figo)进行了嫩枝扦插繁殖试验.结果表明:以对最早生根天数影响最大的是生根剂处理时间,以处理2 h最早生根;对生根率影响最大的是生根剂类型,以根太阳处理生根率最高;对生根数目影响最大的是扦插基质,其中以沙作基质效果最好,生根剂浓度对生根数目也有显著影响,以200 mg/L浓度处理效果最好.综上所述:含笑嫩枝扦插的最佳组合是采用根太阳200 mg/L浸泡穗条基部2 h,使用沙作扦插基质.该组合扦插后100 d,生根率达到70%,生根数目平均达到4.12条. 相似文献
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试验设5个处理,采用春采和冬储两种采穗方式,用自制高分子.激素水凝胶生根膜和ABT1号生根粉100mg/kg溶液对银杏硬枝插穗进行处理。试验结果表明银杏春采插穗涂自制高分子.激素水凝胶生根膜露地与地膜覆盖扦插育苗生根成活率无显著差异,较冬储插穗浸ABT生根粉100mg/kg溶液露地、地膜覆盖扦插可显著提高插穗生根成活率。 相似文献
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Several factors contributing to the successful rooting of stem cuttings of four peach clones and one almond × peach hybrid under intermittent mist were tested. With the almond × peach cross, leaf-bud cuttings were also tested.Severe cutting back of adult peach mother trees in winter favoured rooting of the cuttings, but less severe cutting back induced maximum roots per cutting.For short periods vermiculite was found to be a suitable medium. Sand alone or mixed with vermiculite or gravel gave poor results. Gravel alone or mixed with vermiculite was intermediate. For growing the rooted cuttings for a longer period, a mixture of perlite and peat was very suitable.A period of illumination of 3 h starting at midnight with incandescent light improved rooting of peach cuttings in August and October, but not in June.With cuttings obtained from old fruit-bearing peach trees highest rooting rates were obtained in July, but best root development occurred when rooting was carried out in October. In July rooting rate of basal cuttings was much higher than that of terminal ones. Success with leaf-bud cuttings (including a small branch piece) obtained from young mother trees of the almond × peach hybrid was only achieved at the end of May or in June.Dipping the base of peach cuttings in water before rooting was of advantage with one cultivar rooted in September, but of no advantage with another cultivar rooted in June.When the base of stem cuttings was dipped for a prolonged period in IBA solutions of various concentrations, highest rooting rates were obtained with 25–50 ppm IBA for peaches and with 200 ppm for the almond × peach hybrid. The addition of Phygon XL to this solution was of some advantage for peach cuttings. The concentration inducing maximum root development was higher than that required for maximum rooting and callusing. The optimal IBA concentration for rooting of almond × peach leaf-bud cuttings was 100 ppm.Penetration of the IBA into the leaf-bud cuttings reached a maximum 45 min a after floating them on a 100 ppm solution.Transplanting cuttings which had been rooted under mist was somewhat difficult; however, high rates of survival were obtained with cuttings planted in September which had developed a good root system. 相似文献
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The carbohydrate resources of softwood hop cuttings were modified by supplying sugars, in solution, during a 5-day pre-rooting dark period. At low light intensity, where cuttings were maintained at about compensation point, the effect of such sugar pre-treatment was to cause large increases in rooting, compared with cuttings of low initial carbohydrate status. At higher light intensity, however, where considerable accumulation of carbohydrate took place during the rooting period, the only effect of initial differences in carbohydrate status was in the time at which roots were first observed ; the subsequent rate of rooting and final number of roots were determined by the environmental conditions. 相似文献
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不同树冠部位和粗度插条对榉树扦插生根的影响 总被引：1，自引：0，他引：1
对不同树冠部位和粗度插条对榉树扦插生根的影响进行了研究。结果表明:对于不同树冠部位的插条来说,树冠下部枝条硬枝扦插和嫩枝扦插效果均最好,生根率分别达到了42.3%和51.6%;对于不同粗度的插穗来说,粗度为1.3～1.5cm的插穗硬枝扦插和嫩枝扦插效果均最好,生根率分别达到了42.5%和43.9%。 相似文献