共查询到20条相似文献，搜索用时 296 毫秒
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用浓度100、50、30g／L的磷酸二氢钾粉剂溶液喷施冬藏新疆杨插穗育苗试验结果表明，喷施磷素肥较对照生根分别提前12d、12d、6d，成活率分别提高24．1、20．3、16．0个百分点，同时对苗木具有明显的促进生长发育作用。 相似文献
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以3年生细柄阿丁枫实生苗作试材,采用二阶非平衡巢式设计,研究外源激素种类及浓度对其扦插生根的影响,旨在为细柄阿丁枫无性繁殖提供指导.结果表明:外源激素种类及浓度对细柄阿丁枫嫩枝扦插生根均有极显著影响;扦插生根的最佳处理为300 mg/L NAA浸泡2h,各生根性状依次为生根率78.33％、根数23.73、根长4.26 cm,分别约为CK的3倍、6倍和4倍;就最佳处理而言,可将插穗生根过程分为3个阶段:0～20 d为愈伤组织产生期,≥20～30 d为不定根发生期,≥30～45 d为不定根大量形成期,各阶段均比CK提前15 d左右. 相似文献
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不同植物生长调节剂对美人梅硬枝扦插生根的影响 总被引：3，自引：0，他引：3
不同组合和质量浓度植物生长调节剂处理美人梅硬枝插穗试验结果表明：（1）不同植物生长调节剂及质量浓度促根效果不同：NAA、IAA和IBA都表现出低质量浓度促进生根,高质量浓度抑制生根的现象;同时低质量浓度的生长调节剂能使愈伤组织形成提前10～20 d,从而促进提前生根。NAA250 mg/L（浸泡30 min）处理调节生根率最好,其次是IAA500 mg/L（浸泡30 min）的处理,分别达56.67%,54.44%;在对平均单株生根数量上却以IAA500mg/L（浸泡30 min）处理效果最好,平均达11.48条。（2）NAA 250 mg/L不同浸泡时间对美人梅扦插生根效果不同：在供试质量浓度范围内,随着处理时间的增加,生根率、单株平均生根数量均增加,以NAA250 mg/L处理60 min促进生根效果最好,平均生根率达71.11%,平均生根数达10.68条。 相似文献
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近几年许多林场，个体苗圃大户在插条育苗中采用湖北省林科院研制生产的“gll生根素”。经多次考察及实践验证，该产品内含有无机物和有机物质的固体吸附剂成份，并能有效的防治各类插条的切口创伤病菌感染和侵袭，有力地促进了插条组织细胞的再生力和不定根的形成，从而增强了幼苗的生存能力。我们多次深入苗圃田间，进行了细致的调查，以“gll生根素”处理笔相插条为例，经过多次试验，证明“gll”生很亲”具有以下优点：使用“gll生根素”处理的笔柏插条，愈合快，比“禁乙酸”处理的插条提前愈合生根8～12d左右，根系多，很壮而发达。“… 相似文献
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激素和基质对红花槭嫩枝扦插生根的影响 总被引：1，自引：0，他引：1
6月上旬,选取2年生红花槭嫩枝作插穗,研究不同基质、不同生根激素及质量浓度对红花槭嫩枝扦插生根性状的影响,结果表明:APT 1和NAA以3种质量浓度浸泡处理2 h对插穗的生根效果均有提高,其中APT 1对红花槭嫩枝扦插的生根促进作用优于NAA.就质量浓度而言,无论是APT 1,还是NAA,均以100 mg/L为最好,生... 相似文献
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A comparison of pre-planting treatments on hardwood cuttings of four hybrid poplar clones 总被引：1，自引：1，他引：1
Rooting and early growth of four hybrid poplar clones (Populus spp.) planted in a greenhouse were examined after applying 40 pre-rooting treatment combinations to dormant cuttings. Treatments included 2 cutting lengths (5 and 10 cm), 5 soaking times (0, 2, 4, 8, and 12 days), and 4 dips (chitosan, rooting hormone powder, liquid rooting hormone added to the soaking water, and none). Significant differences in both rooting percentages and growth were shown between clones after 7 weeks of growth. Ten cm cuttings had 29% greater rooting success, 28% more above-ground growth, and 12% lower root/shoot ratios than 5 cm cuttings. Cuttings planted without soaking had the lowest rooting success, at less than 45% on average. Commercial rooting hormones decreased the number of rooted cuttings but increased root/shoot ratios. For optimal rooting, we recommend using 10 cm cuttings, soaked for 2 days in water (4 days for the Jackii10 clone) without any additional dipping/hormone substance. 相似文献
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Genetic variation in rooting ability of loblolly pine cuttings: effects of auxin and family on rooting by hypocotyl cuttings 总被引：1，自引：0，他引：1
After about 20 days, hypocotyl cuttings from 20-day-old loblolly pine (Pinus taeda L.) seedlings rooted easily in the presence of the auxin indole-3-butyric acid (IBA), with roots forming directly from xylem parenchyma. In contrast, woody cuttings from 1-2-year-old hedged seedlings formed roots indirectly from callus tissue in 60-90 days, but IBA had little effect on rooting. Variation in rooting among hypocotyls from both half- and full-sib families was highly significant in response to IBA, and rooting did not occur within 20 days unless IBA was applied. Hypocotyls from poor rooting families tended to produce fewer roots per cutting than hypocotyls from good rooting families. Rooting by woody cuttings and hypocotyl cuttings from the same nine full-sib families was weakly correlated, raising the possibility that at least some common genetically controlled processes were affecting rooting by both types of cutting. The phytotropin N-1-naphthylphthalamic acid (NPA), supplied at 1 micro M with 10 micro M IBA, significantly inhibited rooting by hypocotyl cuttings from both good and poor rooting families, but there was no significant family x treatment interaction. Family variation in rooting ability may be a function of the frequency of occurrence of auxin-responsive cells in the hypocotyls. 相似文献
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不同处理对红雾水葛插穗生根的影响 总被引：1，自引：0，他引：1
试验表明，对红雾水葛扦插生根影响最主要的因素是插穗部位，其次是激素种类厦浓度水平。红雾水葛以嫩枝扦插效果最好，在激素中以ABT生根粉和吲哚丁酸的效果较佳，而蔡乙酸的效果最差。生根效果最好的是A1B1C3和A1B3C12个处理，扦插后5d，分别有96．67％和86，67％的插穗形成愈伤组织，6d生根率分别迭80％和93．33％，12d全部生根，每株分别有新根90．6根和97，2根；而对照扦插后5d，有66．67％的插穗形成愈伤组织，6d生根率达83．33％，12d全部生根，每株仅有新根27根。 相似文献
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为了解油茶(Camellia oleifera)扦插生根过程中营养物质含量的动态变化及其与插穗生根的关系,以清水为对照,用IBA、ABT6、NAA生根粉处理插穗,并对油茶嫩枝扦插生根过程中部分营养指标的含量进行了测定.结果表明:外源生长激素提高了插穗生根率,改善了生根性状,其中以IBA处理为最优;处理组与对照插穗的可溶性总糖质量分数、淀粉质量分数随时间变化趋势一致,均呈"下降—升高—下降"趋势,处理组出现的峰值均比对照早且高;总氮质量比变化呈"升高—下降—升高"趋势,处理组全氮含量在根的表达期均低于对照,但生根率均高于对照; C/N值呈现"下降—升高—下降"变化趋势,处理组C/N值变化曲线的峰值显著高于对照,C/N值越高的处理,其生根率越高. 相似文献
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根太阳”生根剂在湿加松扦插育苗中的应用效果初报 总被引：2，自引：0，他引：2
2005年11月至2006年6月间,在广东省台山市红岭种子园开展了利用“根太阳”生根剂处理湿加松嫩枝的扦插试验。试验结果表明,利用1．25mL／L或1．00mL／L浓度的“根太阳”生根剂可明显缩短湿加松嫩枝生根时间、提高生根率、增加不定根数量和促进生根苗木生长。扦插后133d,经过1．25mL/L“根太阳”生根剂处理的嫩枝,其生根率为86．11％,比对照高10．55个百分点,不定根数量为3．82条,比对照多109．89％。进一步的分析表明,根太阳的促根效果,在扦插后68d就可得到可靠的评价。此外,试验结果也显示,该试验的扦插环境对湿加松嫩枝的生根率、不定根数量和生根苗木生长也有显著影响。 相似文献
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In-vitro-cultured shoots of clones initiated from shoots of the basal parts (BS) and the crown (C) of two mature Quercus robur L. trees were subjected to rooting experiments to relate rooting with shoot topophysical origin. The BS shoots exhibited morphologically juvenile characteristics and rooted more easily after indole-3-butyric acid (IBA) treatment than C shoots. When naphthylphthalamic acid (NPA) was applied to BS shoots, rooting capacity decreased and root emergence was delayed at least 2 days compared with shoots treated with IBA only. During the first days of the rooting process, endogenous indole-3-acetic acid (IAA) concentration was higher in C shoots than in BS shoots, regardless of whether the shoots were treated with NPA. Mitotic figures were observed in cells from the basal part of both BS and C shoots 24 h after IBA treatment. After 4 days of IBA treatment, the occurrence of histological events differed between BS shoots and C shoots. Cells of BS shoots became meristematic, giving rise to meristemoids and root primordia, whereas no differentiation of root meristemoids occurred in cells of C shoots. Thus, although adult oak material (C shoots) is capable of responding to the initial stimulus of auxin during the adventitious rooting process, the endogenous IAA concentration is not the factor limiting rooting in adult material. 相似文献