scholarly journals In vitro clonal propagation and efficient acclimatization with use of hydrogel of intensively sweet medicinal plant Lippia dulcis Trev.

2020 ◽  
Vol 66 (4) ◽  
pp. 25-31
Author(s):  
Magdalena Tomaszewska-Sowa

Summary Introduction: The leaves of Lippia dulcis contain high amounts of hernandulcin. It is one thousand fold sweeter than sucrose, however, it hardly contains any calories. Objective: The aim of this research was to optimalisation of micropropagation and acclimatization of L dulcis Methods: The nodal explants were inoculated on phytohormone-free MS medium. After 6 weeks the explants were inoculated onto the MS medium with different plant growth regulators. Well-developed rooted plantlets were adapted to ex vitro conditions using hydrogel. Results: On the medium with BAP and NAA the highest number of shoots were produced. The higest average shoot length, number of the leaves and the leaf area were recorded on the medium with GA3. Adding IBA increased the number of roots. The addition of hydrogel enhanced the acclimatization efficiency. Conclusions: There was observed a positive, stimulating influence of growth regulators on mass propagation and increase in the number of leaves and the leaf area and influence of hydrogel on the development of plantlets during acclimatization.

1970 ◽  
Vol 45 (1) ◽  
pp. 75-78 ◽  
Author(s):  
Shahina Islam ◽  
Mosfequa Zahan ◽  
Shahina Akter ◽  
Tanjina Akhtar Banu ◽  
Ahashan Habib ◽  
...  

An efficient mass propagation method for Feronia limonia was developed from excised shoot tips and nodal explants of in vitro grown seedlings. Explants were cultured on MS medium with different conc. of NAA, Kn, IAA and BAP singly or in combinations. Highest number of micro shoots and better plant growth were obtained from these two explants on MS medium supplemented with 0.2 mg/l BAP alone. The regenerated shoots were successfully rooted on MS medium supplemented with 0.5 mg/l NAA. The in vitro raised plantlets were successfully established in soil following the formation of roots with 100% survivability under ex vitro condition. Key words: Feronia limonia; Mass propagation; Node; Shoot tips; Multiple shoot DOI: 10.3329/bjsir.v45i1.5186 Bangladesh J. Sci. Ind. Res. 45(1), 75-78, 2010


1970 ◽  
Vol 35 (3) ◽  
pp. 507-514 ◽  
Author(s):  
H Khatun ◽  
MM Khatun ◽  
MS Biswas ◽  
MR Kabir ◽  
M Al-Amin

The experiment was conducted to investigate the combined effect of different plant growth regulators and charcoal supplementation in MS medium on growth and development of plantlets regenerated from protocorm like bodies (PLBs) of hybrid orchid. The combination of BAP + NAA, BAP + IAA, BAP + IBA, and IAA + IBA at different concentrations with charcoal supplementation was studied. The result revealed that the use of different growth regulators had significant effect on different parameters studied. The maximum weight of PLBs (5.123 g) was obtained from the combination of BAP + IBA at 1.0 mg/l each. The highest shoot height (3.239 cm) and maximum number of rooted plantlets (4.473) was obtained from 1.0 mg/l each of BAP + NAA combination. The maximum number of leaves (3.490) and the maximum length of leaves (1.946 cm) were obtained from 1.0 mg/l each of BAP + IBA and the highest leaf width (1.166 cm) was obtained from 0.5 mg/l BAP +1.0 mg/l IBA combination. The highest root length was obtained from 0.5 mg/l each of BAP + IAA and the maximum number of regenerated plantlets (20) was obtained from 0.5 mg/l IAA + 1.0 mg/l IBA combination. However, the maximum fresh weight of single shoot (0.219 g) and the maximum number of roots per plantlet (6.300) was obtained from 1.0 mg/I each of IAA + IBA combination. Keywords: Dedrobium; orchid; hybrid; In vitro growth. DOI: 10.3329/bjar.v35i3.6457Bangladesh J. Agril. Res. 35(3) : 507-514


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%


2020 ◽  
Vol 11 (2) ◽  
pp. 140-148
Author(s):  
Ridho Kurniati ◽  
Fauziah Khairatunnisa ◽  
Reni Indrayanti

Lily was usually propagated using MS (Murashige and Skoog) medium supplemented with plant growth regulator and hormone. The important concerns in mass propagation and seed production of lily for industries are cheap, easy and low cost medium. This study’s objective was to find out of generic media to substitute MS medium and to decrease the cost of mass propagation of lily in vitro. Three substitutions medium were Vitagrow, Growmore, Gibril, and G-60. Bulbs of lily Arumsari varieties were used as materials. Complete Random Design with a single factor was used in the experimental design. The treatments were type of generic in vitro medium (Vitagrow, Growmore, Gibril, and G-60), consisting of three replication and 20 units per repetition and five bulbs per unit of repetition. The parameter observed was the total number of leaves and roots, length of leaves and roots, and bulb growth percentage. Growmore medium showed a better result than others in total number of leaves (50,67), length of leaves (1,6 cm), length of roots (0,312 cm) and percentage of bulb growth (100%). The highest total number of roots was achieved in G-60 medium.


2008 ◽  
Vol 35 (No. 3) ◽  
pp. 107-112 ◽  
Author(s):  
R. Kapoor ◽  
S. Kumar ◽  
K. Kanwar J

The influence of growth regulators on <i>in vitro</i> bulblet formation from <i>ex vitro</i> roots was studied in asiatic and oriental hybrids of <i>Lilium</i> The root segments (3–4 mm) isolated from the middle zone of 2–3 cm <i>ex vitro</i> root were cultured on Murashige and Skoog (MS) medium containing 1 or 1.5 mg/dm<sup>3</sup> naphthalene acetic acid (NAA) and/or benzyladenine (BA). Bulblets were not produced in the presence of NAA and BA alone. A significant increase in the per cent explants producing bulblets was observed with 1.5 mg/dm<sup>3</sup> NAA and 1 mg/dm<sup>3</sup> BA. Maximum number of bulblets and average fresh weight per bulblet was observed with 2 mg/dm<sup>3</sup> NAA and 1.5 mg/dm<sup>3</sup> BA after 90 days of culture. No differences were found among cultivars in bulblet regeneration of explant or bulblet number although more weighty bulblets occurred in cv. Apeldoorn. About 82% bulblet survival was recorded in coco peat after 30 days of transfer to pots.


Author(s):  
Poornima Raj ◽  
J. Anbumalarmathi ◽  
S. Aruna Sharmili

An experiment was conducted for standardization of in vitro propagation technique of Bacopa monnieri (L.), a medicinal herb of India. Healthy leaf segments of the herb were used as explants with basic Murashige and Skoog (MS) medium containing various combinations of different growth regulators for callus, shoot and root initiation. The best callus induction percentage (95.47%) was observed on MS + 0.5 mg/L NAA and 2.0 mg/L BAP (T3). The maximum number of shoots (8), shoot length (9.30 cm) and shoot induction percentage (90.48%) was achieved on MS + 3.0 mg/L BAP and 1.0 mg/L Kn (ST4). The maximum number of roots (8) and root length (7) was observed on MS + 1.5 mg/L IAA (RT5). The rooted micro shoots were successfully hardened and acclimatized in green house and subsequently established in soil with survival rate of 90%.


2017 ◽  
Vol 47 (10) ◽  
Author(s):  
Annie Carolina Araújo de Oliveira ◽  
Caroline de Araújo Machado ◽  
Leila Albuquerque Resende de Oliveira ◽  
Ana Veruska Cruz da Silva ◽  
Ana da Silva Lédo

ABSTRACT: The aim of this study was to evaluate the in vitro morphogenic potential of genipap (Genipa americana L.) zygotic embryos. Seeds obtained from ripe fruits had their zygotic embryos excised and inoculated in MS medium with 4.44µM of 6-benzylaminopurine (BAP) and supplemented with 0.0; 1.07; 2.14 and 3.21µM of naphthalene acetic acid (NAA). The potential of explants regeneration and the shoot length and number of leaves in plantlets were evaluated. The in vitro regeneration of genipap is possible from the conversion of zygotic embryos in a MS medium with 4.44µM BAP supplemented with 3.21µM NAA.


2018 ◽  
Vol 10 (2) ◽  
pp. 251-258
Author(s):  
Chibuzo Nwabueze Chikezie NWAOGUALA ◽  
Hakeem Olalekan SHITTU

The in vitro organogenesis of embryos of type-variety (‘Albescens’, ‘Nigrescens’, ‘Virescens’ and ‘Idolatrica’) of the oil palm (Elaeis guineensis Jacq.) with growth regulators was studied. Murashige and Skoog (MS) medium, supplemented with nine treatment concentrations of Naphthalene acetic acid (NAA) and 6-Benzylaminopurine (BAP), alone and in combinations, was used to initiate embryo cultures of the type-variety. Data were collected on time of root production, root length, plant height, number of leaves and number of roots.  The results obtained indicated that there were swelling and expansion of the matured zygotic explants in cultures within 7 and 14 days after culture initiation (DCI). Time of root production did not vary significantly among type-variety, but differed significantly (p < 0.001) due to growth regulators, whereas their interaction effect was non-significant. Root length and plantlet height significantly varied (p < 0.05) due to type-variety and growth regulators, as well as their interaction. There were no significant variations among type-variety on number of leaves and roots produced at 84 DCI, but there was significant (p < 0.05) variations on number of leaves and non-significant variance on number of roots due to growth regulators. The type-variety combined with growth regulators effects on number of leaves and roots were not significant.  In the present study, the responses of the various type-variety in the regeneration of plantlets in vitro varied with respect to media supplementation and that low concentration of NAA and BAP, alone and in different combinations, favoured root, leaf and plantlet production in MS medium.


2011 ◽  
Vol 3 (3) ◽  
pp. 89-92
Author(s):  
Kamnoon KANCHANAPOOM ◽  
Nararatn PROMSORN

Inflorescence, apical and lateral buds of Musa balbisiana ‘Kluai Hin’ (BBB group) were used to culture on MS medium supplemented with 22 μM BA and 15% (v/v) coconut water. Comparison of bud orientation showed that the best response of in vitro shoot tip proliferation was obtained with abaxial surface of buds lying down i.e. one side touching the medium (tilt). Mass propagation of shoot tips was obtained when cultured buds on MS medium containing 44 μM BA. Rooting was achieved by transferring the isolated shoots to MS basal medium without growth regulators. Rooted plantlets were acclimatized and successfully established in soil.


2019 ◽  
Vol 18 (1) ◽  
pp. 39-45
Author(s):  
Leila Samiei ◽  
Mahboubeh Davoudi Pahnekolayi ◽  
Zahra Karimian

Gypsophila aretioides, a cushion form evergreen plant, is a high potential wild species ideal for the use in rock garden, or as a ground cover in sunny dry areas. This plant has the competence to be developed as a new ornamental species. The purpose of this experiment was to provide an efficient micropropagation protocol for G. aretioides in order to facilitate the availability of this species for further studies of domestication. The influence of various concentrations of 6-benzylaminopurine (BAP) and thidiazuron (TDZ) was investigated for multiplication stage. TDZ at low concentration of 0.05 mg dm−3 resulted in the maximum shoot (9.7) and leaf (42.3) number. The shoots were best rooted on MS medium containing 0.6 mg dm–3 indolebutyric acid (IBA) with 7.8 roots per shoot. Despite achievement of a successful protocol for in vitro multiplication and root induction of Gypsophila, low survival rate was obtained when rooted explants were exposed to ex vitro conditions. This is an important issue, which requires particular consideration and further studies. The possible reasons contributing to the low acclimatization rate of this species are being discussed.


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