scholarly journals In vitro propagation of some tomato (Lycopersicon esculentum Mill.) hybrids

2007 ◽  
Vol 1 (1) ◽  
pp. 52-60
Author(s):  
Kadhum Muhammed Ibrahem ◽  
Hamza Musa Kadhum ◽  
Ali Abadi Manea

Seeds of four tomato hybrids Ginan, Nirtia, Speedy and Rola were cultured on aseptic germination medium after surface sterilization with NaOCl. Shoot tips 1cm length were dissected and grown on MS medium supplemented with Benzyl adenine (BA) and Indole acetic acid (IAA) for multiplication. Callus was induced on hypocotyls cultured on MS medium supplemented with BA under light intensity of 1000 lux and 25 0C. Results showed that NaOCl at 4% completely disinfected seeds and resulted in pathogen free seedlings. Results also showed that a concentration of 4 mg/l of BA was superior in increasing callus fresh and dry weights. Shoot multiplication was achieved on the same medium supplemented with 2 and 0.8 mg/l of BA and IAA respectively.

2020 ◽  
Vol 44 (4) ◽  
pp. 641-648
Author(s):  
Bandita Deo ◽  
Bikram Keshari ◽  
Bikram Pradhan

The present experiment was conducted to optimize protocols for in vitro propagation of banana (Musa sp.) cv. ‘Patakpura’ (AAB), supplemented with different growth regulators. Shoot tips obtained from sword suckers were cultured aseptically on MS medium supplemented with different concentrations of cytokinins like 6-Benzylaminopurine (BAP) and Kinetin (KN) for multiplication of shootsand auxins such as indole acetic acid (IAA) and naphthalene acetic acid (NAA) for induction of roots. The best result from the initial culture was obtained from MS medium supplimented with 4 mg/l BAP + 0.5 mg/l IAA. The highest shoot fresh weight, shoot length and number of shoots per explant were recorded from MS medium supplemented with 4 mg/l BAP + 0.5 mg/l IAA + 0.25 mg/l NAA. Therefore, the MS medium supplemented with 4 mg/l BAP + 0.5 mg/l IAA + 0.25 mg/l NAA was found to be most effective and productive combination for shoot multiplication and proliferation of the culture in vitro. IAA at a concentration of 1 mg/l was found to be most suitable for rooting of the shoots. Bangladesh J. Agril. Res. 44(4): 641-648, December 2019


HortScience ◽  
2009 ◽  
Vol 44 (6) ◽  
pp. 1668-1671 ◽  
Author(s):  
Mónica Moura ◽  
Maria Irene Candeias ◽  
Luís Silva

The purpose of our research was to establish a protocol for the in vitro culture of Viburnum treleasei, a rare and endangered taxon with high ornamental potential endemic to the Azores islands. The surface sterilization of the explants was better achieved with a pretreatment of 0.1% (w/v) Benomyl for 2 h followed by 0.2% (w/v) HgCl2 for 10 min with agitation. Shoot tips were the most efficient explants for shoot development and single-node segments for proliferation. Woody plant medium (WPM) was adequate for all micropropagation stages. For culture establishment and shoot development, a hormone-free medium was adequate, whereas a 1.1 μM N6-benzyl adenine medium supplement was more efficient for shoot multiplication. Elongation and rooting could be carried out on a 1.3 μM 1-naphthaleneacetic acid-supplemented medium. Acclimatization of in vitro-produced plantlets was achieved after 1 month with a success rate of 50%. This in vitro propagation procedure will be useful for the conservation of Viburnum treleasei through production of morphologically true-to-type plants, allowing the recovery of depleted natural populations. Chemical names used: N6-benzyl adenine (BA); 1-naphthaleneacetic acid (NAA); HgCl2 (mercury bichloride).


2018 ◽  
Vol 16 (1) ◽  
pp. 27-30
Author(s):  
Farhana Hoque ◽  
Mahbub Robbani ◽  
Md Fakhrul Hasan ◽  
Jahanara Parvin

An experiment was conducted at the Plant Biotechnology Laboratory, Department of Horticulture, Patuakhali Science and Technology University during the period from August 2016 to April 2017 to standardize the protocol for in vitro propagation of banana. The experiment was laid out in completely randomized design with four replications. Three to four months aged field grown rhizome attached shoots were used as explants and cultured on MS medium with different concentrations and combinations of BAP (6-benzylamino purine), BAP + KIN (Kinetin) + NAA (Naphthalene Acetic Acid) and IBA (Indole-3- Butyric Acid) + IAA (Indole-3- Acetic Acid) to observe their efficacy on single shoot initiation, shoot multiplication and root formation respectively. Minimum number of days required for shoot initiation (9.07) with highest shoot initiation percentage (91.14) and the longest shoot (2.23 cm) was found in MS medium supplemented with 5.0 mg/L BAP. On the other hand, highest shoot multiplication percentage (80.99) with maximum number of shoots per explant (4.47), the highest length of shoots (4.17 cm) and maximum number of leaves (4.04)was observed in MS medium supplemented with 4.0 mg/L BAP + 2.0 mg/L KIN + 2.0 mg/L NAA. In case of root regeneration, the best results on days required for root initiation (9.00), the highest root initiation percentage (85.05), maximum number of roots per plantlet (5.83) and the highest length of roots (4.17 cm) was obtained in MS medium supplemented with1.5 mg/L IBA + 0.5 mg/L IAA. After 5-7 days of hardening in room temperature, established plantlets were ready for plantingJ. Bangladesh Agril. Univ. 16(1): 27-30, April 2018


2020 ◽  
Author(s):  
Nurşen Çördük ◽  
Cüneyt Aki

Digitalis trojana Ivanina is a member of the Plantaginaceae family and known by its common name, Helen of Troy foxglove. It is perennial endemic to Çanakkale and Balıkesir, northwestern Turkey. In order to develop an efficient shoot regeneration protocol, the leaf explants of D. trojana were cultured on Murashige and Skoog (MS) medium containing 6-benzyl adenine (0.1, 0.5, 1.0, 3.0, 5.0 mg/L) and α-naphthalene acetic acid (0.1, 0.5, 1.0 mg/L), 3% (w/v) sucrose and 0.8% (w/v) agar. The highest number of regenerated shoots was obtained from leaf explants that were cultured on MS medium with 3.0 mg/L BA+0.1 mg/L NAA. Regenerated shoots were rooted on MS medium without plant growth regulators. Rooted plants (2–3 cm) were separately transferred to pots containing a mixture of peat and perlite (2:1 v/v) and acclimatized successfully in a growth chamber.


Biologia ◽  
2014 ◽  
Vol 69 (5) ◽  
Author(s):  
Ziba Bakhtiar ◽  
Mohammad Mirjalili ◽  
Ali Sonboli ◽  
Mahdi Farimani ◽  
Mahdi Ayyari

AbstractThymus persicus (Ronniger ex Rech. f.) Jalas is a valuable and endangered natural source of antitumor pentacyclic triterpenoids, i.e., betulinic acid, oleanolic acid and ursolic acid, which grows in northwest Iran. As the plant has a low propagation rate in nature, a suitable method for in vitro-propagation is needed. With the aim of identifying a suitable system for regenerating T. persicus via direct organogenesis, Murashige & Skoog (MS) medium supplemented with different plant growth regulators (PGRs) was tested. In vitro-grown shoot tips were exposed to the cytokinins 6-benzylaminopurine (BAP), kinetin (KN), and thidiazuron (TDZ), alone or in combination with the auxins 1-naphthalene-acetic acid (NAA), 2,4-dichlorophenoxyacetic (2,4-D), indole-3-butyric acid (IBA) and indole-3-acetic acid (IAA). The highest shoot formation (7.1 ± 0.9) was obtained with a medium fortified with 8.9 μM BAP plus 2.7 μM NAA. Regenerated shoots were easily rooted on the different tested media, with the most abundant (16.6 ± 1.4) and strongest roots obtained on half-strength MS medium containing 2.5 μM IBA. The rooted plantlets were successfully acclimatized (76.6%) in a greenhouse before transference to natural conditions. Homogeneity and phytochemical productivity of the in vitro regenerated plantlets were confirmed by random amplified polymorphic DNA (RAPD) profiles and high performance liquid chromatography (HPLC), respectively.


2020 ◽  
Vol 23 (1) ◽  
pp. 178-190
Author(s):  
Jeillan Hussein ◽  
Diaa ibraheam

Marumi kumquat (Fortunella Japonica) is culture for its valuable nutritional value and medicinal importance in many regions of the world. The current study aimed to evaluate the effect of two types of media enriched with different concentrations of fructose and different plant growth regulators and different fructose concentration on in vitro propagation of Fortunella Japonica. The findings showed that the most effective treatment for explant surface sterilization was by using 0.1% HgCl2 for ten minutes which give best results for production contamination-free explants at the initiation cultures. At multiplication stage, WPM medium gave better results at all tested BA levels as compared with MS medium. No significant differences were showed by using BA alone or in combination with GA3 in the measured parameters. It has been observed that WPM medium supplemented with 0.5mgl-1 BA with the presence of 30mgl-1 fructose was able to give the highest shoot length (1.56cm) with maximum shoots number/explant 9.0 and highest leaves number/explant (21.0). The proliferated shoots were exposed to full strength MS medium salts supplemented with 2mgl-1 NAA which showed the highest ratio of rooting. In vitro rooted plantlets were gradually acclimatized and transferred to open air conditions, which recorded a high survive rate reached to 92%


HortScience ◽  
2010 ◽  
Vol 45 (6) ◽  
pp. 934-938 ◽  
Author(s):  
Oscar García-Rubio ◽  
Guadalupe Malda-Barrera

A rapid shoot multiplication protocol was established for the endangered cactus Mammillaria mathildae to reintroduce it to its natural habitat. In vitro-germinated seedlings were used as the source of explants. Three explant sources (apical, lateral, and basal excised from in vitro-germinated seedlings) were tested. Shoot multiplication was induced in Murashige and Skoog (MS) medium supplemented with different 6-benzylaminopurine/indole-3-acetic acid (BA/IAA) combinations (0, 22.19, 44.39 and 0, 1.43, 2.85, 5.71, respectively). Explants developed abundant callus in the presence of any BA/IAA concentration, whereas hormone-free media produced 0.59 ± 0.11 new shoots (with a 41% callus development) from basal explants. Apical and lateral explants produced 1.14 ± 0.07 and 4.09 ± 0.13 new shoots, respectively, without callus generation. Plantlets originating from lateral explants developed a vigorous rooting system after 2 months growing on MS medium supplemented with 30 g·L−1 sucrose. Under greenhouse conditions, 98% of micropropagated M. mathildae survived. Plantlets were reintroduced in an experimental plot near to Juriquilla's wild population of M. mathildae; over 52% of the outplanted M. mathildae lot declined after 5 months. Water availability was associated with the decline of outplanted populations during the first month (43%).


2000 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
A. S. AI-Wasel

Shoot multiplication of a putative variant of Catharanthus roseus (L.) G. Don, was achieved in vitro using shoot tips and nodal segments as explants. The addition of growth regulators to establishment medium stimulated bud breaking and shoot elongation. The maximum shoot multiplication (15.1 shoots/microshoot) and the longest shoots (7.0 cm) occurred on Murashige and Skoog medium (MS) containing 1.0 mg L-1 of N6-Benzyladenine (BA) and a- Naphthalene acetic acid (NAA). All microshoots formed roots and normal root morphology occurred on half strength MS salt supplied with 0.5 mg L-1 NAA or Indole-B-Butyric acid (IBA). Rooted microshoots (95 %) were successfully transferred to soil.


2014 ◽  
Vol 8 (1) ◽  
pp. 55-60
Author(s):  
Bushra M. Jaber Alwash ◽  
Ansaam Z. Jassim

This study was aimed to In vitro propagation of Spilanthes acmella L. Murr. It is a medicinal plant not cultivated in Iraq. Seeds were sterilized and cultured on MS medium. Indole acetic acid IAA, Benzyladenin BA growth regulators’ were used at the initiation stage. The combination between IAA and BA was used in multiplication stage. Indole butyric acid IBA was used for rooting the shoots. Results showed that 1.5% sodium hypochlorite for 15 min was very effective for disinfecting and survival. A node exhibited relatively highest response as compared with apical meristems and leaflets culture. Supplying the culture medium with 1mg/l. BA was effective for lateral shoot induction. The mean number of shoots obtained from nodes were 7.43 with a mean length 0.9 cm. Adding BA at 0.5, 1.0 or 1.5 and IAA at 0.1 mg/l. to the growth medium was effective for multiplication. Mean number of the developed shoots were 12.00, 10, 84, 10.00 respectively. Adding 0.1, 0.5, 1.0 mg/l IBA to the half strength MS medium was very effective in root formation which produced 45.0, 42.5, 40.0 roots respectively with mean length of 3.25, 3.80, 3.80 cm respectively. Results of acclimatization stage showed that addition of 1:1 Patmos and loamy soil gave the highest rate of survival 100% after 4 weeks of acclimatization. This study showed the ability of in vitro propagation of Spilanthes acmella (L.) Murr


1969 ◽  
Vol 83 (3-4) ◽  
pp. 169-173
Author(s):  
Keithley L. Amory ◽  
John M. Gill

Young leaves of Liriope muscari provide an ample source of explants for in vitro propagation in tropical countries where flowering is scarce. Leaves were induced to form calli on a solid medium containing Murashige and Skoog (MS) salts and vitamins, 3% sucrose, 0.7% agar, 1 mg/L 2,4-dichlorophenoxy- acetic acid (2, 4-D) and 1 mg/L 6-furfurylaminopurine (kinetin). Only the proximal segments of the leaves produced calli. These calli were induced to produce multiple plantlets on MS medium, 3% sucrose, 0.7% agar, and 10 mg/L N6 (2-isopentenyl) adenine (2 ip). It is possible to use leaf explants for in vitro mass production of Liriope. However, in variegated varieties, only green or white plants were produced, because of a chimera in the original tissue.


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