共查询到19条相似文献，搜索用时 328 毫秒
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本试验选用番茄专用砧木和抗病普通番茄砧木,采取靠接、劈接、插接、针接四种不同嫁接方法嫁接比较试验.试验获得:番茄采用靠接法两种类型砧木均获得高的嫁接成活率,嫁接苗成活后,很快缓苗并抽生新叶.普通番茄砧木嫁接成活率略高于专用砧木. 相似文献
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以中研红3号为接穗,托鲁巴姆和爱好为砧木进行嫁接试验,考察斜切法对嫁接成活率及嫁接后对青枯病抗性和产量的影响。试验结果表明,接穗在2叶期时用嫁接夹斜切法嫁接成活率、产量均达最高,但是使用嫁接夹嫁接速率较低;嫁接苗对青枯病高抗且产量大幅提高。综合分析表明,爱好作为砧木使用嫁接夹在接穗2叶期时嫁接可提高产量,经济、社会、生态效益明显。 相似文献
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以"巨根"辣椒为砧木,"龙椒六号"辣椒为接穗,以砧木不断根常规嫁接和辣椒自根苗分别作为对照,研究双断根套管嫁接方法对辣椒嫁接苗愈合及苗期生长的影响,以期为辣椒种植提供参考依据。结果表明:双断根套管嫁接可有效预防辣椒嫁接苗的徒长,显著提高壮苗指数。辣椒双断根套管嫁接时,砧木与接穗结合部的伤口愈合与砧木根系再生同时进行。嫁接可以有效提高根系活力,采取双断根套管嫁接后根系活力的提升更显著,根系活力随着嫁接时间的延长呈现降低趋势,双断根套管嫁接始终显著高于常规嫁接苗。2种嫁接方法之间的输导组织运输能力差异不显著;与自根苗相比,2种嫁接方法的输导能力在结合部愈合前期显著降低,在结合部完全愈合、嫁接苗成活后(嫁接后20 d)输导能力显著提高,且双断根方法略高于常规嫁接。 相似文献
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杨丽琼许春城田紫蓉李荣琼尹正红魏世杰 《上海蔬菜》2022,(4):37-38
嫁接是预防茄果类蔬菜土传病害及克服连作障碍的有效手段。苦子为云南野生茄子,根系发达,适应性和抗病抗逆性强,可作为茄果类蔬菜的嫁接砧木。为了解苦子的生物学特性及与主要茄果类蔬菜的嫁接效果,作者开展了相关试验。试验结果表明,用苦子作砧木嫁接茄子、番茄、辣椒,嫁接苗移栽后成活快、耐低温霜冻、抗逆性强、适应性广;茄子嫁接苗成活率80%以上,番茄嫁接苗成活率40%左右,辣椒嫁接苗成活率较低。苦子是一种不可多得的茄果类蔬菜嫁接砧木,应完善嫁接技术以进一步开发利用该资源。 相似文献
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以‘特选一号’甜瓜为接穗,‘银光’南瓜为砧木,采用了顶插接、改良插接、断根插接和断根贴接4种嫁接方法,研究了不同嫁接方法对甜瓜嫁接苗生长的影响,以期为甜瓜育苗提供指导。结果表明:甜瓜顶插接嫁接速率最快、嫁接工效最高,嫁接后在昼/夜温度为28℃/18℃条件下,改良插接的嫁接成活率最高,改良插接和断根贴接的愈合时间短。在一叶一心时期,改良插接和顶插接的嫁接苗有明显的生长优势,改良插接的嫁接苗根系生长最好;而到三叶一心时期,断根插接和断根贴接的甜瓜嫁接苗生长快,壮苗指数显著高于顶插接和改良插接,断根插接的嫁接苗叶面积最大。不同嫁接方法所需除萌蘖次数和时间也存在差异,断根插接除萌蘖次数最少,除萌蘖用时仅为顶插接的46.3%。 相似文献
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Yulien Miguelez-Sierra Annia Hernández-Rodríguez Yanelis Acebo-Guerrero Marie Baucher Mondher El Jaziri 《The Journal of Horticultural Science and Biotechnology》2017,92(1):25-30
This study aimed to evaluate in vitro grafting of Theobroma cacao where seedlings of the UF 677 genotype were used as the rootstock and apices or axillary buds of a Trinitarian genotype were used as scion. Three methods of grafting using scions from seedlings were evaluated. Apical grafts using apex and side grafts using apex displayed better graft success (95 and 80%, respectively). However, side grafts using axillary buds reached a greater height on average and a higher number of leaves per plant (1.76 cm and 3.72, respectively). Histological studies revealed new vascular elements at the graft union area. Side grafts with axillary buds provided the highest survival rate (82%) after the acclimatization step. A shoot of at least 1 cm with two leaves is required for plant survival after transfer to ex vitro conditions. Side grafting was carried out with axillary buds from adult trees and nursery plants. Only the grafts with buds from nursery grafted plants were successful, with a rate of 26%. Overall, side grafting with axillary buds is the most appropriate method for cacao micrografting. This method can be used for clonal propagation and for the establishment of in vivo and/or in vitro cacao germplasm collection. 相似文献
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嫁接对低氧胁迫下黄瓜生长和生理代谢的影响 总被引：2，自引：0，他引：2
采用营养液水培, 以丝瓜为砧木, 研究了嫁接对黄瓜植株生长、生理代谢和低氧耐性的影响。结果表明, 以丝瓜嫁接黄瓜可明显提高黄瓜植株的低氧耐性, 在低氧胁迫8 d后, 嫁接苗的株高、茎粗、鲜样质量、干样质量、叶绿素含量、根系活力、超氧化物歧化酶( SOD) 、过氧化物酶( POD) 、过氧化氢酶(CAT) 、抗坏血酸过氧化物酶(APX) 、净光合速率( Pn) 、胞间CO2 浓度(Ci) 、气孔导度(Gs) 、蒸腾速率( Tr) 均显著高于自根苗, 而根系和叶片中超氧阴离子(O2· ) 产生速率显著低于自根苗。表明嫁接可明显提高黄瓜植株的低氧耐性, 耐低氧性的提高与嫁接苗植株较高的抗氧化能力和光合速率密切相关。 相似文献
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Masahumi Johkan Kazuhiko MitukuriSatoshi Yamasaki Genjirou MoriMasayuki Oda 《Scientia Horticulturae》2009
We investigated the cause of defoliation in sweet pepper (Capsicum annuum L.) plants after grafting. Grafted plants of old-stage sweet pepper showed a higher defoliation rate than young-stage grafted plants. Old-stage grafted plants had lower stomatal resistance and water potential than young-stage plants, and showed poorly developed xylem connections at the graft site. Foliar application of abscisic acid (ABA) to the grafted plants increased stomatal resistance and water potential, decreased the defoliation rate, and promoted graft take among old-stage plants. Our results indicated that low stomatal resistance under low humidity induces water stress, defoliation, and low survival rate in old-stage grafted sweet pepper plants. ABA treatment increased stomatal resistance, water potential, and survival rate, and decreased the defoliation rate among old-stage sweet pepper plants. 相似文献
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以4种白籽南瓜为砧木,以甜宝甜瓜为接穗,对嫁接苗和自根苗进行15℃/5℃(昼/夜)连续5d低温处理,统计嫁接苗成活率,并进行生长指标及抗冷相关生理指标的测定。结果表明,低温胁迫后嫁接苗株高、茎粗、地上部鲜质量、根鲜质量的相对生长量均高于自根苗,根系活力、可溶性糖含量、脯氨酸(Pro)含量、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性亦不同程度高于自根苗,而丙二醛(MDA)含量则显著低于自根苗。嫁接显著提高了甜瓜的耐冷性,低温胁迫后甜砧嫁接苗的生长指标以及抗冷相关生理指标几乎全部优于其他3种砧木嫁接苗及自根苗,更适合在甜瓜耐低温生产中推广应用。 相似文献