scholarly journals Plant Regeneration through Somatic Embryogenesis from Leaf Sheath Derived Callus of Sugarcane (Saccharum officinarum L.) var. Isd -16

2011 ◽  
Vol 21 (2) ◽  
pp. 143-149 ◽  
Author(s):  
Mohashweta Roy ◽  
M. Hossain ◽  
A. Biswas ◽  
M. K. Biswas ◽  
R. Islam
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Somatic Embryos ◽  
Callus Formation ◽  
Saccharum Officinarum ◽  
Leaf Sheath ◽  
Coconut Water ◽  
Friable Callus ◽  
Light Yellow ◽  
Half Strength

Leaf sheath explants of an indigenous variety Isd-16 of sugarcane (Saccharum officinarum L.) produced light yellow friable callus after culturing on to MS with 2,4-D (2 - 4 mg/l) and NAA (3 - 5 mg/l) singly. Callus formation was the maximum on MS + 3 mg/l 2,4-D. Callus underwent embryogenesis producing huge number of somatic embryos when subcultured on MS with 15 - 30 mg/l             L-proline, 3 mg/l 2,4-D + 5 - 10% coconut water (v/v) and 3 mg/l 2,4-D + 10% CW  (v/v) + 300 - 500 mg/l CH. L-proline significantly enhanced somatic embryo-genesis and 25 mg/l L-proline in MS was the best culture medium formulation. Most of the somatic embryos germinated and developed plantlets after 1 - 2 weeks of incubation in proline-supplimented medium. On the other hand, maturation and germination of embryos were achieved on half-strength MS with or without 0.25 - 1.0 mg/l L-proline, and 5% coconut water (v/v). Somatic embryos derived plantlets were then successfully transferred to natural condition through successive phages of acclimation.   Key words: Plant regeneration, Leaf sheath, Somatic embryogenesis, Sugarcane   D. O. I. 10.3329/ptcb.v21i2.10237   Plant Tissue Cult. & Biotech. 21(2): 143-149, 2011 (December)

scholarly journals Plant regeneration through somatic embryogenesis from calli derived from leaf bases of Laurus nobilis L. (Lauraceae)

2015 ◽  
Vol 24 (2) ◽  
pp. 213-221 ◽  
Author(s):  
Ahmad H Al Gabbiesh ◽  
M Ghabeish ◽  
I H ◽  
M Kleinwächter ◽  
D Selmar
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Somatic Embryos ◽  
Root Formation ◽  
Callus Formation ◽  
Germplasm Conservation ◽  
Laurus Nobilis ◽  
The Media ◽  
Regenerated Plantlets ◽  
Culture Technology

Somatic embryogenesis was induced in embryo culture on half MS medium supplemented with NAA (8 mg/l) as the sole plant growth regulator after incubation of the media in the refrigerator at 4°C for two weeks to promote callus induction and somatic embryogenesis in Laurus nobilis. Both embryogenetic calli and somatic embryos were induced in the above selected medium. Embryo growth and development were stimulated by separation of embryos successfully from embryo clusters and transferred onto fresh half MS. Among the selected explants, only leaf bases were found to respond actively to plant regeneration, especially in inducing callus formation and in sustaining faster callus growth. Root formation of regenerated plantlets tended to decrease with time on regeneration media. Overall, 75% of the plantlets derived from the callus survived in the greenhouse; and they all grew to phenotypically normal plants. This procedure will enable the use of regeneration tissue culture technology for germplasm conservation of L. nobilis, a plant of high medicinal and commercial value.Plant Tissue Cult. & Biotech. 24(2): 213-221, 2014 (December)

scholarly journals Plant regeneration through somatic embryogenesis of yacón [smallanthus sonchifolius (poepp. and endl.) H. Robinson]

2009 ◽  
Vol 52 (3) ◽  
pp. 549-554 ◽  
Author(s):  
Cynthia Manyra Corrêa ◽  
Graciele Nicolodi de Oliveira ◽  
Leandro Vieira Astarita ◽  
Eliane Romanato Santarém
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Somatic Embryos ◽  
Ms Medium ◽  
Embryogenic Calli ◽  
Efficient System ◽  
Smallanthus Sonchifolius ◽  
Tuberous Roots ◽  
Medicinal Use ◽  
Half Strength

Smallanthus sonchifolius has tuberous roots containing large amounts of fructo-oligosaccharides and its medicinal use has increased due to the hypoglycemic properties reported for this species. An efficient system for propagation via somatic embryogenesis is reported using petiole segments cultivated on MS medium supplemented with combinations of BA, kinetin and 2,4-D, under light and darkness conditions. Embryogenic callus was formed in most of the treatments; however, somatic embryogenesis was promoted by the presence of light. Clusters of somatic embryos appeared on callus surface after 50 days of culture. The highest number of embryos was produced on 0.45 µM BA and 4.5 µM 2,4-D. Embryogenic calli were maintained on MS medium containing 4.5 µM BA and 0.045 µM 2,4-D. Embryos converted on hormone-free half-strength MS medium with 2 g.L-1 activated charcoal and plantlets were transferred to non-sterile conditions for acclimatization, showing 100% of survival.

scholarly journals Somatic Embryo from Basal Leaf Segments of Vanda tricolor Lindl. var. pallida

2017 ◽  
Vol 3 (5) ◽  
pp. 173
Author(s):  
Popy Hartatie Hardjo ◽  
Wina Dian Savitri
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Growth Regulator ◽  
Somatic Embryos ◽  
Callus Formation ◽  
Basal Leaf ◽  
Half Strength ◽  
Leaf Segments ◽  
Embryogenic Callus Formation ◽  
Benzyl Amino Purine ◽  
Plant Micropropagation

<p class="Els-Abstract-text">Somatic embryogenesis is one of techniques in plant micropropagation. The induction of somatic embryogenesis through callus phase was done on <em>Vanda tricolor</em> Lindl. var. pallida. This study aimed to find out the effect of naphtalene acetic acid (NAA) and benzyl amino purine (BAP) in inducing somatic embryogenesis via callus on the basal leaf segments of <em>Vanda tricolor</em> Lindl. var. pallida. The half-strength of Murashige and Skoog (½ MS) medium with 1 % sucrose, incorporated with (0.02 mg · L<sup>–1</sup>and 0.05 mg · L<sup>–1</sup>) NAA and also 0.01 mg · L<sup>–1</sup> BAP were used in this experiment. The best medium for embryogenic callus formation and proliferation was 0.05 mg · L<sup>–1</sup> NAA in combination with 0.01 mg · L<sup>–1</sup> BAP. The formation of somatic embryos occurred 30 d after the calluses were cultured on to ½ MS without the addition of plant growth regulator and subsequently formed shoots.</p>

scholarly journals Somatic Embryogenesis and Plant Regeneration in Cucumber

HortScience ◽  
1994 ◽  
Vol 29 (8) ◽  
pp. 906-909 ◽  
Author(s):  
H. Lou ◽  
S. Kako
Keyword(s):  
Tissue Culture ◽  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Somatic Embryos ◽  
Callus Formation ◽  
Semisolid Medium ◽  
Cotyledon Explants ◽  
High Sucrose ◽  
Embryogenic Callus Formation ◽  
Internode Explants

The embryogenic capacity of seven cucumber (Cucumis sativus L.) cultivars was examined by tissue culture of cotyledon, young first-leaf, and internode explants. Somatic embryogenesis frequencies differed significantly among the tested cultivars, and `Fushinarimidori' produced the highest number of embryos from either cotyledons or young first leaves. Cotyledon- and first-leaf-derived calluses produced more embryos than calluses from internodes. Somatic embryos were induced from `Aonaga F1' internodes. With relatively high sucrose levels (6% and 9%) in the initiation medium, the frequency of embryogenic callus formation from `Fushinarimidori' cotyledon explants was >90%. The highest yield of somatic embryos occurred in cultures initiated with high sucrose levels (9% or 12%), although 12% sucrose inhibited callus formation and growth. Somatic embryos germinated in a basal liquid medium supplemented with 0.5% activated charcoal, and they developed into well-shaped, healthy plantlets on semisolid medium with 1% sucrose.

scholarly journals Plant Regeneration via Somatic Embryogenesis from Leaf and Floral Explants of ‘Chancellor’ Wine Grape

1970 ◽  
Vol 20 (2) ◽  
pp. 157-170 ◽  
Author(s):  
Richard M.S. Mulwa ◽  
Margaret M.A. Norton ◽  
Robert M. Skirvin
Keyword(s):  
Somatic Embryogenesis ◽  
Embryogenic Callus ◽  
Somatic Embryos ◽  
Basal Medium ◽  
Limiting Factor ◽  
Half Strength ◽  
Conversion Stage ◽  
Cotyledon Expansion ◽  
Floral Explants ◽  
Shoot Meristems

Abundant embryogenic callus was obtained from leaf and floral explants of "Chancellor" grape by continuous culture for 12 weeks on Nitsch and Nitsch basal medium supplemented with 9 μM 2, 4-D + 17 μM IASP + either 1 μM BA or 1 μM TDZ (ECIM) in darkness. They were successfully maintained by a five to six week subculture interval on NN medium containing 2 μM 2, 4-D + 0.2 μM TDZ + 4 μM IASP (LTMM). Near synchronous embryo developed from embryogenic callus on medium containing 10 μM IASP + 8 μM NOA + 1 μM TDZ + 1 μM ABA + 2.5 g/l AC (EDMM).  Individually separated somatic embryos were germinated on both NN and half strength of MS containing 0.5 μM BA + 0.025 μM NAA, respectively; normal plantlet conversion from embryos was low (35%).  Whole fruiting plants were obtained. Aberrant embryo development was characterized by failure to form functional shoot meristems following the initial cotyledon expansion during germination. These observations indicate that the embryo conversion stage of the regeneration is difficult and remains a limiting factor requiring more empirical experimentation for improvement in grape tissue culture.   Key words: Chancellor grape, Regeneration, Somatic embryogenesis   D.O.I. 10.3329/ptcb.v20i2.6895   Plant Tissue Cult. & Biotech. 20(2): 157-170, 2010 (December)

scholarly journals Bioproduction of Diosgenin in Callus Cultures of Balanites aegyptiaca: Effect of Growth Regulators, Explants and Somatic Embryogenesis

2006 ◽  
Vol 1 (3) ◽  
pp. 1934578X0600100
Author(s):  
Bishnu P. Chapagain ◽  
Vinod Saharan ◽  
Dan Pelah ◽  
Ram C. Yadav ◽  
Zeev Wiesman
Keyword(s):  
Somatic Embryogenesis ◽  
Growth Regulators ◽  
Embryogenic Callus ◽  
Somatic Embryos ◽  
Callus Formation ◽  
Basal Medium ◽  
Callus Cultures ◽  
Suspension Cultures ◽  
Balanites Aegyptiaca ◽  
Basal Media

This study describes the effects of plant growth regulators, explants, and somatic embryogenesis on in vitro production of the steroidal sapogenin, diosgenin, in callus cultures of the Balanites aegyptiaca (L.) Del.(desert date). Root, shoot, hypocotyl, and epicotyl callus culture of B. aegyptiaca, were raised on MS basal media supplemented with various combinations of either 2,4-D and NAA alone, or with BAP. The diosgenin content (on a dry weight basis) was found to be highest when calli were cultured in MS basal medium supplemented with 1.0 mg l−1 2,4-D alone and/or in combination with 0.5 mg l−1 BAP. However, the callus growth was highest in media supplemented with 2.5 or 3.0 mg l−1 2,4-D. MS basal media supplemented with 2,4-D 2.5 mg l−1 alone and in combination with 0.5 mg l−1 BAP induced pre-embryogenic callus formation on root cultures. When these pre-embryogenic callus cultures were used to establish cell suspension cultures, two growth densities were obtained in embryogenic suspension cultures, inducing clusters of somatic embryos at various stages of development. The maximum number of somatic embryos were obtained at the fifth week on the medium supplemented with 1.0 mg l−1 2,4-D. However, the diosgenin content in these somatic cells was found to be lower compared to the explant calluses. This study revealed that production of diosgenin in callus cultures of B. aegyptiaca is possible, but the amount is significantly affected by the growth regulators, type of explants, and somatic embryogenesis.

scholarly journals Efficient Plant Regeneration from Cotyledon and Midrib Derived Callus in Eggplant (Solanum melongena L.)

1970 ◽  
Vol 14 ◽  
pp. 31-38 ◽  
Author(s):  
M Rahman ◽  
M Asaduzzaman ◽  
N Nahar ◽  
MA Bari
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Key Words ◽  
Somatic Embryo ◽  
Callus Induction ◽  
Somatic Embryos ◽  
Solanum Melongena ◽  
Induction Medium ◽  
Root Induction ◽  
Ms Medium

Somatic embryos were obtained from cotyledon and midrib explants of Solanum melongena L., cultivar Loda. For callus induction, medium was supplemented with different concentrations of auxin singly or in combination with BAP. The best callusing 83-85% was obtained from both of the explants cultured on MS medium containing 2.0 mgl-1NAA + 0.05 mgl-1BAP. Somatic embryogenesis and shoot regeneration was achieved after transferring the calli to MS medium supplemented with BAP, GA3, NAA and Zeatin. Cotyledon derived calli showed better performance (87%) for regeneration than that of midrib (82%) when sub cultured on MS medium having 2.0 mgl-1 Zeatin + 1.0 mgl-1 BAP. For root induction, MS + 3.0 mgl-1 IBA was proved to be better treatment for average number (14-15) and mean length (12 cm) of roots than those of other treatments. Key words: Eggplant; cotyledon; midrib; callus induction; somatic embryo J. bio-sci. 14: 1-9, 2006

Histological studies of cellular differentiation during somatic embryogenesis of coconut plumule-derived calli

2015 ◽  
Vol 43 (3) ◽  
Author(s):  
K. Lakshmi Jayaraj ◽  
U. Bhavyashree ◽  
T.P. Fayas ◽  
K.K. Sajini ◽  
M.K. Rajesh ◽  
...  
Keyword(s):  
Somatic Embryogenesis ◽  
Somatic Embryos ◽  
Callus Formation ◽  
Histological Study ◽  
Shoot Meristem ◽  
Vascular Bundles ◽  
Histological Studies ◽  
Meristematic Cells ◽  
Meristem Development

<div><table cellspacing="0" cellpadding="0" align="center"><tbody><tr><td align="left" valign="top"><p>Since coconut is   one of the most recalcitrant species to generate <em>in vitro</em>, it is   necessary to study in detail about the cellular changes that occur during   somatic embryogenesis to enhance our knowledge about this phenomenon. In the   present study, coconut plumular tissues, the shoot meristem including leaf   primordia, were used as explants for <em>in vitro </em>regeneration studies.   Histological studies were carried out in different stages of plumule culture.   No noticeable growth was observed in 15 days old cultures. After 30 days,   meristematic cells could be identified. Abundance of meristematic cells,   foremost to the development of callus structures, was observed after 45 days.   After 75 days, globular friable calli were formed and histological studies   revealed the presence of meristematic centers which eventually formed somatic   embryos. The histological study of matured somatic embryos formed after 120   days of callus initiation showed a clear meristematic zone of parenchyma   cells, surrounded by vascular bundles. Histological studies, carried out for   certain abnormalities like compact calli, abnormal somatic embryoids with   rudimentary shoots and multiplied roots, revealed the presence of intact   cotyledonary leaves which seemed to inhibit the apical meristem development   of somatic embryoids. The presence of vascular bundles in the early stages of   callus formation might lead to the direct formation of meristemoids. These   results could aid future studies leading to enhanced control of the somatic   embryogenic process and greater efficiency of somatic embryo and plantlet   formation in coconut.</p></td></tr></tbody></table></div>

Direct somatic embryogenesis and plant regeneration from leaf sheath explants of mango ginger (Curcuma amada Roxb.)

2014 ◽  
Vol 50 (6) ◽  
pp. 752-759 ◽  
Author(s):  
Chellappan Soundar Raju ◽  
Abubakker Aslam ◽  
Krishnan Kathiravan ◽  
Perumal Palani ◽  
Appakan Shajahan
Keyword(s):  
Somatic Embryogenesis ◽  
Plant Regeneration ◽  
Leaf Sheath ◽  
Direct Somatic Embryogenesis ◽  
Mango Ginger ◽  
Curcuma Amada
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