scholarly journals Aplikasi Zat Pengatur Tumbuh dengan Jumlah Daun Entres yang Berbeda terhadap Keberhasilan Sambung Pucuk Durian (Application of Plant Growth Regulator with Different Number of Scion Leaves on Success of Durian Top Grafting)

2021 ◽  
Vol 30 (2) ◽  
pp. 125
Author(s):  
Zulfa Rahmadita Nur Azizah ◽  
Etik Wukir Tini ◽  
Joko Maryanto
Keyword(s):  
Plant Growth ◽  
Factorial Design ◽  
Research Design ◽  
Growth Regulator ◽  
Vegetative Propagation ◽  
Plant Growth Regulator ◽  
Coconut Water ◽  
Pot Experiment ◽  
Break Time ◽  
Number Of Leaves

<p>Perbanyakan tanaman secara vegetatif menggunakan teknik sambung pucuk dapat digunakan sebagai alternatif untuk menghasilkan benih yang bermutu. Namun, masalah yang sering terjadi pada sambung pucuk adalah kegagalan sambung. Penelitian ini bertujuan untuk mendapatkan jenis zat pengatur tumbuh, jumlah daun entres, dan kombinasi perlakuan yang memberikan hasil terbaik terhadap keberhasilan sambung pucuk durian. Penelitian dilaksanakan pada bulan November 2018 sampai Januari 2019 di Desa Alasmalang, Kemranjen, Banyumas. Percobaan yang dilakukan merupakan percobaan pot dengan rancangan faktorial. Perlakuan pada penelitian ini adalah kombinasi antara zat pengatur tumbuh (kontrol, ekstrak tauge, air kelapa, IBA, dan BAP) dan jumlah daun entres (2, 4, dan 6 helai). Rancangan penelitian yang digunakan yaitu Rancangan Acak Kelompok Lengkap dengan 15 perlakuan dan diulang tiga kali. Hasil penelitian menunjukkan perlakuan ZPT IBA dan BAP memberikan pengaruh nyata terhadap jumlah tunas sambung pucuk tanaman durian, yaitu sebesar 2,711 dan 2,822 dan perlakuan jumlah daun entres dua helai memberikan pengaruh yang nyata terhadap waktu pecah tunas, jumlah tunas, dan pertambahan jumlah daun sambung pucuk tanaman durian, yaitu sebesar 2,3 helai.</p><p><strong>Keywords</strong></p><p>Sambung pucuk durian; Daun entres; Zat pengatur tumbuh</p><p><strong>Abstract</strong></p><p>Vegetative propagation of plants using shoot grafting can be used as an alternative to produce quality seeds. The problem that often occours in top grafting is the failure to graft. This experiment aims to obtain the type of plant growth regulator, the number of scion’s leaves, and the combination that give the best results for growth of top grafting in durian. The research was conducted in November 2018 to January 2019 in Alasmalang Village, Kemranjen, Banyumas. The experiment was a pot experiment with a factorial design. The treatment was a combination of growth regulator (control, bean extract, coconut water, IBA, and BAP) and number of scion leaves (2, 4, and 6 strands). The research design used was a RCBD with 15 treatments and three replications. The results showed that the treatment of PGR IBA and BAP had a significant effect on the number of grafted shoots of durian plants, namely 2.711 and 2.822 and the treatment of the number of leaves of two leaves had a significant effect on shoot break time, the number of shoots and the increase in the number of grafted leaves of durian plants, namely amounting to 2.3 strands.</p>

scholarly journals PLANT GROWTH REGULATOR OF AUXIN CONTENT IN FERMENTED COCONUT WATER WASTE

2021 ◽  
Vol 1908 (1) ◽  
pp. 012006
Author(s):  
Elik Murni Ningtias Ningsih ◽  
Sudiyono ◽  
Frida Dwi Anggraeni
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Coconut Water ◽  
Auxin Content ◽  
Water Waste

scholarly journals EFEK PEMBERIAN PAKLOBUTRAZOL PADA ANGGREK Vanda tricolor SECARA IN VITRO

2018 ◽  
pp. 16
Author(s):  
Ni Wayan Deswiniyanti ◽  
Ni Kadek Dwipayani Lestari
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Phase 1 ◽  
Observation Time ◽  
High Genetic Diversity ◽  
Orchid Seed ◽  
Number Of Leaves ◽  
Major Factors

Vanda tricolor Lindl. Var. Suavis forma Bali has a specific character than the forma Merapi and forma West Java that is size of flowers and fruits, spots purple in labellum purple colored labelum and floral fragrance. High genetic diversity is one of the major factors in breeding improvement. Increasing the diversity of orchid plant characteristics can be done by giving paclobutrazol. Treatment by paklobutrazol in culture medium aims to inhibit growth both in number of leaves and shoot length so that the plant becomes smaller size than their parent or original. The result of growth resistance that occurs varies based on the concentration of paclobutrazol added to medium Vacint & Went (VW) in culture of seeds V. tricolor orchid added with coconut water with concentration of paklobutrazol Control K0 (0%), K1 (1mg / l), K2 (3mg / l), K3 (5mg / L), and K4 (7mg / l). Each treatment performed 5 times repetition. The result of planting of Vanda tricolor seed explants with paclobutrazol modification in vitro was found 40% cultured imbibition and then protocorm, 8% browning on seed, and 52% contamination. This study showed descriptively the orchid seed Vanda tricolor responded to Vacint and Went (VW) media which was added with plant growth regulator of paklobutrazol, so that it was able to grow and develop until reaching phase 1 that seeds to form protocorm, but statistically the addition of plant growth regulator of paklobutrazol has not show a significant influence on the growth and growth response of orchids Vanda tricolor (P> 0.05) because the observation time is not sufficient for at least 6 months of observation and see the function of paklobutrazol is to slow the growth. Keywords :Vanda tricolor, paclobutrazol, in vitro, vacin went, protocorm

scholarly journals Pengaruh Pemberian Berbagai Zat Pengatur Tumbuh Alami terhadap Pertumbuhan Stek Kopi

2017 ◽  
Vol 8 (1) ◽  
pp. 46
Author(s):  
Isna Tustiyani
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Coconut Water ◽  
Natural Plant ◽  
Onion Extract ◽  
Randomized Complete Block Design

Kopi merupakan salah satu komoditas perkebunan unggulan nasional. Pembibitan kopi umumnya melalui biji, padahal kopi dapat dibudidayakan melalui cara vegetative yaitu stek asal diberi perlakuan at pengatur tumbuh. Tujuan penelitian  ini adalah untuk  mempelajari pengaruh pemberian berbagai zat pengatur tumbuh alami pada stek kopi. Percobaan dilaksanakan di Kebun Percobaan  Fakultas Pertanian, Universitas Garut pada Oktober – November 2016 menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan tanpa pemberian ZPT, growtone, ekstrak bawang merah, dan air kelapa. Hasil percobaan dapat disimpulkan bahwa pemberian ekstrak bawang merah dapat menumbuhkan sebesar 50% dan penggunaan growtone sebesar 55% stek kopi hidup.KATA KUNCI: auksin, air kelapa, ekstrak bawang merah,  stek kopi  THE EFFECT OF VARIOUS NATURAL PLANT GROWTH REGULATOR ON GROWTH CUTTINGS OF COFFEEABSTRACTThe Coffee is one of national excellent commodities. The Nurseries of coffee generally through the beans, but it can be grown through vegetative through by cuttings treated with growth regulators. The purpose of this research was to study the effect of various naturally plant growth regulators in coffee cuttings. The experiment was conducted at the Experimental Farm, Faculty of Agriculture, University of Garut in October-November, 2016 using Randomized Complete Block Design with treatment  without giving plant growth regulator, growtone, onion extract, and coconut water. The result showed  that the extract of onion can grow at 50% and the growtone treatments  can grow 55% of the coffee cuttings. 

scholarly journals The Effect of Shallot Extract and Auxin-Plant Growth Regulators on the Growth of Mucuna bracteata D.C.

2021 ◽  
Vol 4 (2) ◽  
pp. 130-138
Author(s):  
Silvana Prameswari ◽  
Bayu Pratomo
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Growth Regulator ◽  
Oil Palm ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Distilled Water ◽  
Survival Percentage ◽  
Randomized Block Design ◽  
Number Of Leaves

Introduction: This study aims to obtain concentration of shallot extract (Allium cepa ) and growth regulators to increase growth of Mucuna bracteata. Mucuna is a land cover plant that must be planted in oil palm plantation areas. It is very important to be able to cover the planting area. Materials and Methods: This study used two factorial in randomized block design. The first was concentration of shallot extract per 100 ml distilled water consists of 4 levels, such as control (B0), 10 cc (B1), 20 cc (B2), 30 cc (B3) and the second was the auxins-plant growth regulator consists of 4 levels: Control (G0), 100 ppm (G1), 200 ppm (G2), 300 ppm (G3). Data analyzed with ANOVA with a significant 5% and continued with the DMRT using SAS version 9.1.3. Results: It was found that effect of concentration of shallot extract had a significant effect on survival percentage of Mucuna bracteata at a concentration of 10 cc (B2) after opening the lid at four weeks after planting (WAP) and did not change until 8 WAP. Likewise, the number of leaves at the control concentration (B0) at the age of 6 WAP, and a concentration of 10 cc (B1) at the age of 7-8 WAP. The concentration of growth regulators and their interactions did not significantly affect the survive percentage and number of leaves in Mucuna bracteata.

scholarly journals Transformation of Zinnia elegans Jacq. as an ornamental potted plant by daminozide application

2021 ◽  
Vol 6 (3) ◽  
pp. 140
Author(s):  
Nurul Annisa ◽  
Aziz Purwantoro ◽  
Dyah Weny Respatie
Keyword(s):  
Plant Growth ◽  
Factorial Design ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Ornamental Plants ◽  
Zinnia Elegans ◽  
Flowering Period ◽  
Soaking Time ◽  
Potted Plant

Zinnia elegans Jacq. is one of the ornamental plants potential to be used as a potted ornamental plants. The problem to be resolved is the size of the plant can reach 1 m, so it is necessary to modify the plant height into 20 cm to 25 cm using retardant (plant growth regulator), called daminozide. The purpose of this study was to determine the best concentration and soaking time using daminozide to inhibit the growth of zinnia. The research was conducted at Mangkuyudan 57, Yogyakarta. This research was arranged in a factorial design with 3 blocks as replication. Different concentrations of daminozide were used as first factor with three levels (1 g.L-1, 2 g.L-1, and 3 g.L-1) and soaking times were used as the second factor (12 h, 24 h, and 36 h). The data were analyzed using analysis of variance and continued with HSD-Tukey at the α = 5 %. The results showed that there were an interaction between daminozide concentration and soaking time in the height of Z. elegans. There were also positive correlation between plant height, number of flower, and flowering period. The best combination of daminozide concentration and soaking times were 2 g.L-1 and 12 h. This treatment gave the best height that fit to the criteria of a potted plant which was 20.08 cm. However, it reduced flower’s diameter, number of flowers, and canopy’s size.

scholarly journals Various Natural Ingredients as Plant Growth Regulator to Increasing Viability True Seed Shallot of Onion

1970 ◽  
Vol 6 (1) ◽  
pp. 80-87
Author(s):  
Elseria Siburian ◽  
Luthfi A.M. Siregar
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Maximum Growth ◽  
Growth Potential ◽  
Coconut Water ◽  
Bamboo Shoot ◽  
Hypocotyl Length ◽  
Onion Extract ◽  
True Seed

The research was aimed to determine the source of plant growth regulator from natural ingredients that can increase the viability of onion True Seed Shallot (TSS). This research was conducted at the Laboratory of Seed, Universitas Sisingamangaraja XII Tapanuli, North Sumatra from June until July 2018. This research used Completely Randomized Design. The treatment of this research: Z0 (control/distilled water), Z1 (GA3 100 ppm), Z2 (BAP 100 ppm), Z3 (banana hump extract), Z4 (bamboo shoot extract), Z5 (onion extract), Z6 (coconut water). Each treatment has four replications. Parameters of this research include maximum growth potential (MGP), germination, root length, and hypocotyl length. Data analysis using IBM SPSS Statistics v.20. The results showed that treatment onion extract can increase the highest TSS germination at 7 and 14 days after planting (DAP) amount 85.83% and 80.84% respectively. Treatment bamboo shoots, onion extracts, coconut water and GA3 can increase the MGP which is classified as high ranging from 81.67 to 92.50%. Soaking the onion TSS with bamboo shoot extract and GA3 treatment can increase the hypocotyl length amount 4.06 cm and 3.91 cm respectively.

scholarly journals Protocorm Like Bodies (PLB) Anggrek Hasil Silangan Phalaenopsis gigantea × Phalaenopsis violacea pada Kombinasi Media dan ZPT

2015 ◽  
Vol 5 (2) ◽  
pp. 118
Author(s):  
Sandra Arifin Aziz ◽  
Dewi Sukma ◽  
, Nazi
Keyword(s):  
Plant Growth ◽  
Key Words ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Block Design ◽  
Coconut Water

<p>ABSTRACT</p><p>The study  was  aimed to  determine  combination media and plant growt regulator to support growth  of  F1  of  PLB  orchid  from  Phalaenopsis gigantea x Phalaenopsis  violacea  hibridisation,. This research consist of two experiment. The first  experiment use  randomize  complete  block  design with two factor i.e media and plant growth regulator (PGR). The experiment used Knudson C 80% and  NPK  (18:18:18+EDTA)  media, while  the plant  growth  regulator used without  PGR,  coconut water, thidiazuron (TDZ)  +  benziladenin (BA). The second experiment  was  subculture in different media,  Knudson  C  80% without  PGR  to  Knudson  C  80%  without  PGR  and  NPK, NPK (20:20:20)+vitamin+myoinositol; NPK (18-18-18+EDTA)  without PGR subculture to  NPK (18-18-18+EDTA)  without  PGR  and  NPK (20:20:20)+vitamin+myoinositol;  NPK  (18:18:18+EDTA) +TDZ 0.5 ppm+BA 0.5 ppm subculture to NPK (18:18:18+EDTA) +TDZ 0.5 ppm+BA 0.5 ppm andNPK  (20:20:20)+  vitamin+myoinositol;  KC  80%+coconut  water  100 ml, KC  80%+TDZ  0.5 ppm+BA  0.5  ppm  and  NPK  (18:18:18+EDTA) +coconut water  100  ml  subculture  to  NPK (20:20:20)+  vitamin+myoinositol.  The result showed that the best combination of media and plant growth  regulator to proliferation was NPK (18:18:18+EDTA) without PGr media, and then subculture in the same media i.e NPK (20:20:20) +vitamin+ myoinositol.</p><p>Key words: Knudson C 80%, Protocorm Like Bodies (PLB), orchid, thidiazuron,benziladenin</p><p> </p><p>ABSTRAK</p><p>Penelitian ini bertujuan untuk mempelajari kombinasi media tanam dan  zat pengatur tumbuh(ZPT)  yang sesuai untuk mendukung pertumbuhan PLB anggrek hasil silangan antara  Phalaenopsisgigantea  ×  Phalaenopsis  violacea. Penelitian  terdiri  atas  2  percobaan. Percobaan 1  menggunakan rancangan acak  lengkap  faktorial  dengan  2  faktor,  yaitu  media  tanam  dan  ZPT. Media  yang digunakan adalah media Knudson C (KC) 80% dan media NPK (18:18:18+EDTA), sedangkan ZPT yang dicobakan adalah tanpa penambahan ZPT, air kelapa, serta  thidiazuron (TDZ)  +benziladenin (BA).  Percobaan  2 adalah  subkultur  pada  media  yang  berbeda  menggunakan  rancangan acak lengkap  yaitu,  KC  80%  tanpa  ZPT  disubkultur  ke  KC  80%  tanpa ZPT  dan  NPK (20:20:20)+vitamin+  myoinositol; NPK (18-18-18+EDTA) tanpa ZPT disubkultur ke NPK  (18-18-18+EDTA) tanpa ZPT dan NPK (20:20:20)+vitamin+myoinosi tol; NPK (18:18:18+EDTA) +TDZ 0.5 ppm+BA 0.5 ppm disubkultur ke NPK (18:18:18+EDTA) +TDZ 0.5 ppm+BA 0.5 ppm dan NPK (20:20:20)+vitamin +myoinositol; KC 80%+air kelapa 100 ml, KC 80%+TDZ 0.5 ppm+BA 0.5 ppm dan  NPK  (18:18:18+EDTA)  +air  kelapa 100 ml  disubkultur  ke  NPK  (20:20:20)+vitamin+myoinositol.  Hasil  percobaan menunjukkan  bahwa  perlakuan  media  dan  ZPT  terbaik  untuk proliferasi adalah  media  NPK  (18:18:18+EDTA)  tanpa  penambahan  ZPT,  kemudian disubkultur pada media yang sama, atau media NPK (20:20:20) +vitamin+ myoinositol.</p><p>Kata kunci: Knudson C 80%, Protocorm Like Bodies (PLB), anggrek, thidiazuron, benziladenin</p>

scholarly journals RESPON STEK PUCUK TANAMAN MIANA (COLEUS ATROPURPUREUS (L.) BENTH) TERHADAP PEMBERIAN ZAT PENGATUR TUMBUH

2019 ◽  
Vol 19 (2) ◽  
pp. 277
Author(s):  
Eltis Panca Ningsih ◽  
Imas Rohmawati
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Large Scale ◽  
Block Design ◽  
Ornamental Plant ◽  
Coconut Water ◽  
Plant Materials ◽  
Randomized Block Design ◽  
Number Of Shoots

Abstrak : Tanaman miana saat ini dimanfaatkan sebagai tanaman hias. Perbanyakan Tanaman miana dapat dilakukan dengan cara generatif maupun vegetatif. Stek pucuk merupakan cara perbanyakan vegetatif tanaman miana yang relatif mudah dilakukan. Pembibitan dengan cara ini merupakan salah satu cara cepat dalam memenuhi kebutuhan bahan tanaman skala besar. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian Zat Pengatur Tumbuh terhadap stek pucuk tanaman miana (Coleus atropurpureus (L.) Benth. Penelitian dilaksanakan di di laboratorium agroekologi, Fakultas Pertanian, Universitas Sultan Ageng Tirtyasa. Penelitian akan dilaksanakan pada bulan pada bulan Maret sampai Mei 2017. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang yang terdiri dari empat perlakuan dan diulang tiga kali. Perlakuan yang diuji dalam percobaan ini adalah: kontrol (Tanpa ZPT), IAA 750 ppm, Growtone 500 ppm, dan air kelapa 10%. Hasil penelitian menunjukkan bahwa pemberian zat pengatur tumbuh berpengaruh terhadap jumlah tunas dan jumlah akar. Jumlah tunas terbanyak terdapat pada perlakuan Growtone sebesar 7.50 tunas. Jumlah akar terbanyak terdapat pada perlakuan IAA sebesar 91.00 buah. Rekomendasi budidaya tanaman miana dengan cara stek dapat menggunakan IAA 750 ppm maupun Growtone 500 ppm.Kata Kunci : miana, stek, zat pengatur tumbuhAbstract : Miana plant is currently used as an ornamental plant. The multiplication of miana crops can be done in a generative and vegetative way. Cuttings is a vegetative way of reproduction of miana plant which is relatively easy to do. Breeding in this way is one of the quick ways in meeting the needs of large-scale plant materials. This research aims to determine the effect of giving Plant Growth Regulator to the shoots cuttings of Miana (Coleus atropurpureus (L.) Benth). Research conducted in the Agroecological laboratory, Faculty of Agriculture, University of Sultan Ageng Tirtyasa. The research will be held in the month of March to May 2017. The study conducted by randomized block design (RBD) which consists of four treatments and is repeated three times. The treatment tested in this experiment was: control (without plant growth regulator), IAA 750 ppm, Growtone 500 ppm, and 10% coconut water. The results showed that the treatment of plant growth regulator affected in the number of shoots and the number of roots. The most number of shoots is in the Growtone treatment of 7.50 shoots. The highest number of roots is in the IAA treatment of 91.00 pieces. Recommendations for cultivation of miana crops with cuttings can use IAA 750 ppm maupun Growtone 500 ppm.Keyword : Miana, cuttings, growing regulatory substances 

scholarly journals Aplikasi Sari Daun Kelor Sebagai Zat Pengatur Tumbuh Organik Terhadap Pertumbuhan Dan Kadar Klorofil Tanaman Kedelai (Glycine max (L.) Merr.)

2019 ◽  
Vol 12 (02) ◽  
pp. 82-88
Author(s):  
Fauziah Laily Amriyanti ◽  
Purity Sabila Ajiningrum
Keyword(s):  
Plant Growth ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Positive Control ◽  
Negative Control ◽  
Randomized Design ◽  
Synthetic Solution ◽  
Glycine Max L ◽  
Number Of Leaves ◽  
Soybean Plants

Soybean as a protein sources can fill the needs of public’s food increasily but the production in this country is still low. Therefore, cultivation efforts are needed to improve the growth and development of soybean plants. Some factors that are sufficient to influence the plant growth process are nutrient supply, water availability, sunlight, air temperature, oxygen and growth regulators. Plant Growth Regulator (PGR) that can be used is moringa leaves as a source of cytokinins. Cytokinin serves stimulating cell division, postpone the process of aging plants, and spur growth budding. This study aims to determine the effect of giving plant growth organic made by moringa leaves with 2 control, which are negative control (0%) and positive control (cytokinin synthetic solution) and 3 treatment at concentration of P1 (10%), P2 (20%), P3 (30%) to increase the growth soy plants and to know the concentration optimally of any treatment given. This research using the completely randomized design (CRD) with 5 treatment and 5 replicate. The results were analyzed using the ANOVA test followed by the LSD/BNT test and the Duncan test. The results showed that the application of organic PGR made from Moringa leaves had a significant effect (P <0.05) on growth (plant height and number of leaves) and chlorophyll content in soybean plants had optimal concentrations at 30% concentration.     Keywords: moringa leaves, cytokinin, soybean plants, plant growth regulator.

scholarly journals STIMULATE NO DESENVOLVIMENTO DE MUDAS DE KUNQUAT ‘NAGAMI’

Irriga ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 97-106
Author(s):  
Marco Antonio Tecchio ◽  
SARITA LEONEL ◽  
LUIS LESSI DOS REIS ◽  
LILIAN MASSARO SIMONETTI ◽  
MARLON JOCIMAR RODRIGUES DA SILVA
Keyword(s):  
Plant Growth ◽  
Plant Height ◽  
Growth Regulator ◽  
Plant Growth Regulator ◽  
Dry Matter ◽  
Rangpur Lime ◽  
Nursery Plant ◽  
Number Of Leaves ◽  
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STIMULATE NO DESENVOLVIMENTO DE MUDAS DE KUNQUAT ‘NAGAMI’   MARCO ANTONIO TECCHIO1; SARITA LEONEL1; LUIS LESSI DOS REIS2; LILIAN MASSARO SIMONETTI2 E MARLON JOCIMAR RODRIGUES DA SILVA2 1 Eng. Agr., Doutor, Departamento de Horticultura, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Ciências Agronômicas, Botucatu – SP, Caixa Postal 237. CEP: 18.610-307. E-mail: [email protected]; [email protected] Eng. Agr., estudantes de pós-graduação, Departamento de Horticultura, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), Faculdade de Ciências Agronômicas, Botucatu – SP, Caixa Postal 237. CEP: 18.610-307. E-mail: [email protected]; [email protected]; [email protected]  1 RESUMO Objetivou-se avaliar o efeito do Stimulate® no crescimento de mudas de Kunquat ‘Nagami’, em condições de casa de vegetação, do Departamento de Horticultura da Faculdade de Ciências Agronômicas, UNESP. As mudas de Kunquat ‘Nagami’ (Fortunella sp.), enxertadas sobre Limoeiro ‘Cravo’ (Citrus limonia Osbeck) foram adquiridas de um viveiro comercial de citros, localizado no município de Jacuba-SP, com 30 dias após a enxertia. Aos 60 dias após a enxertia, quando as mudas de Kunquat ‘Nagami’ atingiriam altura média de 40 cm e 22 folhas, foram realizadas quatro aplicações do bioestimulante Stimulate® nas seguintes concentrações: 0, 50, 100, 150 e 200 mL L -1 de solução. Realizaram-se avaliações no crescimento das mudas aos 7, 14 e 21 dias após a última aplicação de Stimulate®. Avaliaram-se as variáveis: altura da planta, número de folhas, massa fresca e seca da parte aérea, massa fresca e seca da raiz, comprimento da raiz principal, diâmetro do caule do porta-enxerto e do caule da copa, área foliar e o índice relativo de clorofila. Obteve-se, com a dose de 200 mL de Stimulate® L-1, aumento na altura da planta, no número de folhas, no comprimento da raiz e no diâmetro da copa das mudas de Kunquat ‘Nagami’. Palavras chaves: Fortunella sp, viveiro, reguladores vegetais  TECCHIO, M. A.; LEONEL, S.; REIS, L. L.; SIMONETTI, L. M., SILVA, M. J. R.EFFECT OF STIMULATE ® ON GROWTH OF ‘NAGAMI’ KUNQUAT SEEDLINGS   2 ABSTRACT The objective of this study was to evaluate the effect of Stimulate® on  growth of  ‘Nagami’ Kunquat seedlings in a greenhouse at the Horticulture Department in the College of Agricultural Sciences, UNESP.  The seedlings of ‘Nagami’ Kunquat (Fortunella sp) grafted onto ‘Rangpur’ lime (Citrus limonia Osbeck) were from a commercial seedling nursery of citrus in Jacuba city-SP and were at  30 days after grafting. At 60 days after grafting, when the seedlings reached 40 cm mean height and 22 leaves, a total of four applications   of Stimulate®  plant growth regulator were performed in the following concentrations:  0, 50, 100, 150 and  200 mL L -1 of solution. Seedling growth evaluations were performed at 7, 14 and 21 days after the last Stimulate® application.  The following variables were evaluated: plant height, number of leaves, above ground   fresh and dry matter, fresh and dry matter of roots, length of roots, diameter of the rootstock and canopy stems, leaf area and the relative chlorophyll index.  The application of   200 mL Stimulate® L-1 in ‘Nagami’ Kunquat seedlings led to an increase in plant height, number of leaves, root length and stem diameter of canopies. Keywords: Fortunella sp, seedling nursery, plant growth regulator

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