IBA、ABT1和发根农杆菌对大叶金叶椴嫩枝扦插生根的影响

以大叶金叶椴为试材,研究了IBA、ABT1和发根农杆菌对其嫩枝扦插生根的影响。结果表明:IBA、ABT1和发根农杆菌处理后,插条生根率、平均生根数、平均根长显著提高(P0.01),生根时间缩短。IBA、ABT1和发根农杆菌处理后,插条生根GA3和IAA含量,IAA/ABA均比对照增加,且差异极显著(P0.01);可溶性糖和全氮含量变化一致,先上升后下降与对照无显著差异,提高了IAA/ABA比值,降低了ABA和酚的含量。其中以500mg·kg~(-1) ABT1浸泡1min,再用发根农杆菌浸泡基部30min处理的嫩枝扦插生根效果最好,生根率、平均生根数、平均根长分别比对照增加了112.36%、112.61%和64.95%,生根时间比对照缩短了8d。     

IBA和发根农杆菌对糠椴嫩枝扦插的影响

 研究了IBA和发根农杆菌处理对糠椴嫩枝扦插生根的影响, 并对其影响生根的机理进行了初步探讨。结果表明: IBA和发根农杆菌处理显著( P < 0.01) 提高了插条生根率, 增加了成活苗的生根数和根长, 明显缩短了生根时间。IBA和发根农杆菌处理还显著( P < 0.01) 提高了插条生根期内源GA₃和IAA、可溶性总糖和全氮的含量及IAA /ABA比值, 降低了ABA含量, 对糠椴嫩枝扦插生根有明显的促进作用, 其中以500 mg·kg^-1 IBA +发根农杆菌处理的生根效果最好, 插条的生根率、成活苗的生根数、成活苗的根长分别比对照增加了122.08%、65.75%和23.63% , 生根时间比对照缩短了14 d。     

杂交金缕梅‘迪亚娜’硬枝扦插繁殖技术研究

以杂交金缕梅‘迪亚娜’为材料进行硬枝扦插试验,分别采用不同浓度的IBA、GGR6、ABT1生根粉3种植物激素进行不同浸泡时间处理。结果表明:用IBA处理过的金缕梅‘迪亚娜’插条平均生根率最高,为22.22%,相比对照提高了14.72%;不同激素浓度和处理时间对杂交金缕梅‘迪亚娜’硬枝插穗生根情况影响明显,IBA0.03%浸泡1h后的金缕梅‘迪亚娜’插条生根率最高,达到45%,明显高于其他各种处理。     

稀土对葡萄插条发根的效应

<正> 冬季将葡萄枝剪成二芽一段,放湿沙中保藏,1987年2月21日,贮藏插条基部1～2cm用不同浓度硝酸稀土溶液浸泡处理。稀土溶液处理的浓度和时间为100、200、300、400、500ppm浸泡12小时;0.1、0.2、0.3、0.4、0.5％浸泡0.5小时;设清水处理为对照。每处理30根插条。处理后插条斜插于沙床上,盖塑料薄膜,保持沙床湿润。35天后,100ppm处理的生根率为30％;200、300ppm,0.1、0.2、0.3％处理的生根率为20％;0.4、0.5％和对照的生根率为10％。处理55天后,所有插条均生根。100ppm硝酸稀土处理的发根数最多,为12条,是对照的2倍;平均根长最长,为4.1cm,比对照增加37％。0.2、0.3％硝酸稀土处理的生根量亦较多,为11条,但平均根长仅为3.1cm。(邹玲等) 摘自《福建果树》1989年第1期     

吲哚丁酸对月季扦插生根的影响

以红花月季为试材,采用不同浓度(50、150、300mg/L)IBA溶液对月季插条进行不同时间(2、4h)的浸泡处理,通过测定愈伤组织生根率、皮部生根率、根系生长量、根系长度、生根数量、插条成活率及原叶保留率等指标,比较不同处理对月季扦插生根的影响。结果表明:在IBA不同浓度和浸泡时间的组合处理下,红花月季插条生根率较对照均有所提高,而在IBA浓度为150mg/L、浸泡时间为2h的处理条件下,插条成活率最高,植株长势最好。     

ABT生根粉在银杏嫩枝扦插育苗中的应用试验

在银杏嫩枝扦插育苗中进行了ABT生根粉应用试验。结果表明,除了用ABT8号20mg/kg浓度处理的扦插成活率低于对照外,其余各处理均明显高于对照,其中6号生根粉100mg/kg处理的扦插成活率高达91.3%,比对照提高52.5个百分点。ABT生根粉6号的20、50和100mg/kg的处理扦插成活率为61.3%～91.3%,平均为76.3%,高于7号和8号,且效果稳定,可在生产中试用。试验结果还表明,带顶芽的、粗壮的插条扦插成活率高。ABT生根粉处理可增加扦插苗生根数量,最长根长度与对照差异不大。     

不同生根剂对黄心夜合扦插繁殖的影响

研究了不同浓度的KIBA钾盐溶液、KNAA钾盐溶液对黄心夜合半木质化枝条扦插繁殖的影响。结果表明:生根剂对黄心夜合插条的生根有显著的影响,处理后的枝条扦插生根率、生根数和根长均高于对照,不同浓度KIBA处理的枝条生根率、平均根长均高于KNAA处理。3 g/L KIBA处理的枝条生根率最高到达62.5%,平均根长最大为8.9 cm。8 g/L KNAA处理的插穗生根数最多为4.3。     

花卉的茎枝扦插繁殖（二）

一、插条处理促进生根 1．生长调节剂处理生产上常用生长调节剂来处理插条基部，不仅生根率、生根数和根的粗度、长度有显著提高，而且生根期缩短、生根整齐。     

不同植物生长调节剂对红阳猕猴桃硬枝扦插促根的影响

以"三峡虹"红阳猕猴桃为试材,研究了200、500、1 000mg/L 3种浓度的细胞分裂素(6-BA)、赤霉素(GA)、吲哚乙酸(IAA)、生根粉(ABT)处理对猕猴桃硬枝扦插生根率、生根数量、插条根长等指标的影响。结果表明:IAA处理后的插条总体生根率高于其它处理方法,但随着IAA浓度的增高,插条生根率呈下降趋势,其中200mg/L浓度处理效果最好,生根率达到了50.3%;在生根数量方面,除了IAA,GA也表现出较好的效果;平均根长方面,IAA同样占有极显著性优势,6-BA效果最差;多重比较分析表明,200mg/L IAA与其它浓度处理的插条生根效果之间有极显著差异,其它药剂不同浓度之间促根效果显著性差异没有规律性,需要实践中进行筛选。     

桂花扦插研究

通过对桂花扦插的基质、插前枝条预处理、生长激素等对比研究。结果表明:黄泥土作为基质生根效果表现好,使用扦插前预处理对于提高其生根率的作用不理想,直接使用吲哚丁酸、萘乙酸处理插条比对照有一个明显的提高,其生根率分别为57.5%、60%、30%。     

Stock plant shading and rooting of dahlia cuttings

The effect of shading dahlia mother plants on rootability of cuttings was studied with three cultivars: ‘Choot Hashani’, ‘Orpheo’ and ‘Lavender Perfection’. Reducing natural light intensity by approximately 50% increased rooting percentage of ‘Orpheo’ cuttings, but did not affect rooting of the harder cuttings of ‘Lavender Perfection’. Shading stock plants during midday hours only caused internode elongation in ‘Orpheo’, but did not increase rooting. In ‘Choot Hashani’ the same shading treatment promoted rooting. Shading only the base of the cutting when still on the mother plant greatly promoted rooting percentage and mean number of roots per cutting. The reason for the variability in the response to shading is discussed and it is concluded that the shading effect is limited to the root initiation region. It is assumed that shading improves rooting by promoting the herbaceous character of the rooting region. Shading did not affect rooting of cuttings which remained woody in spite of shade.     

生根剂浓度和基质种类对罗汉果扦插生根及生长的影响

采用不同生根剂浓度和不同基质种类对罗汉果的扦插繁殖技术进行研究，结果表明：6种生根剂浓度处理中，以生根剂浓度为40mg／kg的生根率和成活率最高，分别达到90％和95％，根数和根长均达最大值；4种扦插基质处理比较，以河沙＋木屑＋田园土（1：1：2）的处理效果最好，生根率、成活率和抽梢率分别达到92％、96％和88％，根数和根长均达最大值。     

NAA、IBA对樱桃砧木(Prunus pseudocerasus Colt)插条的生理、生化代谢和生根的影响

 用NAA、IBA处理樱桃砧木嫩枝和无根组培苗, 测定了插条生根率、生根条数和生理、生化指标的动态变化。结果表明: 经处理后插穗的各项生根指标都得到了显著提高, 其中100 mg/L 浓度的NAA与IBA处理插穗生根率达到了88.3%和85% , 组织培养的试管苗瓶外生根率达89%和87.5%; 嫩枝插穗的可溶性糖、可溶性蛋白质、叶绿素、核酸物质的含量与对照组相比发生了显著的变化: 在不定根原基的诱导期, 插穗叶绿素、核酸、可溶性糖含量显著增加, 可溶性蛋白质含量下降; 在不定根的形成期,插穗的可溶性糖被不定根的形成所消耗而含量显著下降, 但可溶性蛋白质含量逐渐上升; 在不定根形成后插穗具有了吸收外界营养的能力, 故在不定根伸长期叶片中可溶性糖开始积累, 含量上升。这些物质含量的动态变化与插穗生根相关, 说明生长调节剂是通过调节插条内代谢物质的含量来促进插穗的生根。     

不同因子对盆栽八仙花扦插生根的影响

以1a生八仙花枝条为试材,研究了扦插基质、扦插部位、扦插时期及不同浓度萘乙酸对八仙花扦插生根的影响,以期为八仙花规模化、集约化生产提供科学依据。结果表明:草炭∶珍珠岩为1∶1的基质配比最适宜嫩枝扦插,成活率96.1%;留叶数量为1的插穗最适合半木质化枝条的扦插;半木质化枝条最适宜八仙花扦插,根部发育状况最好;6～7月为最适宜扦插时期,生根率为98.2%～98.6%;150mg/L NAA处理八仙花插穗的生根率最高,达93.3%。     

Effect of leaf retention and flavonoids on rooting of Ilex paraguariensis cuttings

The effect of the mature leaf retention and the exogenous application of flavonoids (naringenin, quercetin and rutin at 30 μM for 12 h) was studied for adventitious rooting of Ilex paraguariensis cuttings. Softwood cuttings harvested from young 3-year-old plants and adult 10- and 20-year-old plants were rooted under intermittent fog. A strong correlation (r² = 0.72) between leaf retention and rooting was noted. The highest percentage of adventitious root formation (40%) was obtained when the leaf was artificially removed after 42 days of incubation. This data was supported by the histological analysis which provided anatomical evidence that cuttings have initiated root primordia by 21 days and the regenerated roots emerge through the epidermis after 35 days of incubation. A strong correlation between the position of the leaf and the site of roots regeneration was observed. A 100% of the rooted cutting with a single leaf only formed roots along the leaf axis at the base of the cutting. Quercetin increased the rooting percentage more than three times compared to the control and all flavonoids tested improved the distribution of roots around the stem without impacting the number of regenerated roots per rooted cutting from 20-year-old plants.     

锡兰叶下珠扦插繁殖技术

研究了不同浓度的强力生根水B-1稀释溶液对锡兰叶下珠扦插繁殖的影响。结果表明:B-1稀释溶液处理对锡兰叶下珠扦插繁殖具有促进作用;随着B-1溶液稀释倍数的增加,锡兰叶下珠的生根率、平均最长根长和平均根数呈先升后降的趋势,且在800倍B-1稀释溶液时达最大值。     

代谢调节剂对嫩枝扦插繁殖成活率的影响及其机理

  研究了红栌、樱桃砧木和石榴嫩枝扦插过程中, 喷施MHS代谢调节剂对其插条成活率、生根率和保绿时间的影响, 及其叶片中可溶性糖、可溶性蛋白质、叶绿素含量和SOD活性的变化。结果表明,MHS对扦插难、易生根植物生长均有明显促进作用。对红栌插条而言, 经生根剂浸根并喷施MHS后插条的成活率和生根率均最高, 与清水对照相比分别提高了895173%和735172% , 保绿时间延长了28185 d。插条的可溶性糖、可溶性蛋白质和叶绿素含量随处理天数的增加而呈增高趋势, 且均高于浸根处理的对照组。SOD活性在处理初期活力有所下降, 后期明显增强。由此可见, MHS是通过对插条生理生化代谢的调控来提高其成活率的。     

香椿扦插繁殖的研究

以红香椿的根条和枝条为试材 ,采用正交试验设计进行扦插繁殖育苗试验 ,结果表明 :香椿根条扦插优于枝条扦插 ,长插穗扦插效果优于短插穗 ;两种插条生根部位有所不同 ,枝插条是愈伤组织生根 ,根插条则以皮部型生根为主 ,少部分为愈伤组织生根。根条和枝条扦插繁殖可用于香椿大规模育苗生产 ,采用直径 0 .5cm以上的根和直径 0 .8cm以上的枝 ,于 3月底扦插 ,剪截长度分别为 8cm、12cm ,扦插前插条下端用HL4 3生根剂分别处理 15～ 2 0s(秒 )、5s(秒 ) ,插于沙床 ,生根率达 94 .3%。     

Influence of cutting position and temperature during rooting on adventitious root formation and axillary bud break of Stephanotis floribunda

Stock plants were grown in a glasshouse under standard growing conditions. Single-node leafbud cuttings were excised and numbered according to the position on the stock plant. Rooting took place at basal temperatures of 17,20 or 23°C and at different durations at 17 or 20°C followed by 23°C. The rooting period lasted 9 weeks.

The temperature of 17°C for 9 weeks completely suppressed root formation. A temperature of 20°C was decisive for root formation. The optimal rooting temperature was higher than 23°C. Temperature treatments of 17 or 20°C for 2–4 weeks only suppressed rooting slightly compared with the 23°C treatment. Cutting position on the stock plant affected the number of roots formed per cutting but not the rooting percentage. Best rooting was observed in cuttings from the middle part of the stock plant.

Axillary bud break was accelerated with increasing rooting temperature and decreasing duration of the lower temperatures. With increasing cutting position number (numbered from top to base), axillary bud break was considerably delayed.

Temperature treatments which delayed root formation also delayed axillary bud break. On the other hand, the cutting position on the stock plant, which had only a minor effect on the speed of root formation, had a pronounced effect on the speed of axillary bud break.