Plantlet production from anthers of Eastern cottonwood (Populusdeltoïdes)

1988 ◽  
Vol 18 (7) ◽  
pp. 937-941 ◽  
Author(s):  
M. Rafique Uddin ◽  
Martin M. Meyer Jr. ◽  
J. J. Jokela
Keyword(s):  
Butyric Acid ◽  
Woody Plant ◽  
Dichlorophenoxyacetic Acid ◽  
Naphthaleneacetic Acid ◽  
Eastern Cottonwood ◽  
Skoog Medium ◽  
Plantlet Production ◽  
Murashige And Skoog Medium ◽  
Woody Plant Medium ◽  
2,4 Dichlorophenoxyacetic Acid

Plantlets were obtained by organogenesis from cultured anthers of Populusdeltoides (Bartr.). Anthers formed callus in the dark on modified Murashige and Skoog medium supplemented with 9.0 μM 2,4-dichlorophenoxyacetic acid and 4.7 μM kinetin. Anther calli were differentiated into shoots by sequential transfer in the light onto Murashige and Skoog medium containing 4.4 μM benzylamino purine and 1.1 μM naphthaleneacetic acid for 4 weeks, followed by several transfers to woody plant medium with 2.2 μM benzylamino purine and 1.1 μM naphthaleneacetic acid. The shoots that formed were rooted by excising and transferring to woody plant medium supplemented with 1.0 μM indole-3-butyric acid. A few of these plants were found to be haploid. Two plants developed male terminal inflorescences, but died shortly thereafter.

scholarly journals Stimulatory effect of auxins and cytokinins on carotenes, with differential effects on xanthophylls in the green alga Chlorella pyrenoidosa Chick.

2014 ◽  
Vol 66 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Romuald Czerpak ◽  
Andrzej Bajguz
Keyword(s):  
Green Alga ◽  
Butyric Acid ◽  
Chlorella Pyrenoidosa ◽  
Dichlorophenoxyacetic Acid ◽  
Naphthaleneacetic Acid ◽  
Differential Effects ◽  
Green Alga Chlorella ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Β Carotene

Research concerning the influence of auxins and cytokinins on the content of carotenoids in <em>Chlorella pyrenoidosa</em> (<em>Chlorophyceae</em>) has been conducted. The strongest stimulating effect on carotenoids content in <em>Ch. pyrenoidosa</em> biomass was exerted by cytokinins (N-6-benzylaminopurine and N-6-furfurylaminopurine) and allantoin, weaker by auxins and their chemical analogues, and the weakest by tryptamine and 2,4-dichlorophenoxyacetic acid compared to the control. Under the influence of cytokinins the content of α- and β-carotene have been stimulated several times stronger than by auxins, and especially 2,4- dichlorophenoxyacetic acid and tryptamine. However, oxygen-rich xanthophylls content was most strongly reduced by cytokinins (60-70% in relation to the control) in the 20 day lasting of <em>Ch. pyrenoidosa</em> cultivation, similarly to auxins: 1-naphthaleneacetic acid, indole-3-butyric acid, 2,4- dichlorophenoxyacetic acid.

scholarly journals Regeneration of plants from leaves of Chrysanthemum morifolium Ram. cv. Bronze Bornholm in in vitro cultures

2014 ◽  
Vol 51 (2) ◽  
pp. 173-178 ◽  
Author(s):  
Aurelia Ślusarkiewicz-Jarzina ◽  
Maciej Zenkteler ◽  
Barbara Podlewska
Keyword(s):  
Chrysanthemum Morifolium ◽  
In Vitro Cultures ◽  
Dichlorophenoxyacetic Acid ◽  
Skoog Medium ◽  
Suitable Medium ◽  
Murashige And Skoog Medium ◽  
2,4 Dichlorophenoxyacetic Acid

Plants were obtained from cultured in vitro leaves of Chrysanthemum morifolium Ram. cv. Bronze Bornholm. The leaves were inoculated on Murashige and Skoog medium (MS) supplemented with cytokinins (kinetin - KIN, zeatin - ZEA, 6-benzyloaminopurine - BAP) and auxins (2,4-dichlorophenoxyacetic acid - 2,4-D, α-naphtaleneacetic acid - NAA, 3-indolilacetic acid - IAA, p-fluorophenylalanine - PFA) in various combinations and concentra-tions. The most suitable medium was that one which contained 4 mg/l KIN, 2 mg/l NAA and 50 mg/l PFA.

Embryolike structures from cotyledons and ripe embryos of Norway spruce (Piceaabies)

1986 ◽  
Vol 16 (3) ◽  
pp. 664-668 ◽  
Author(s):  
P. Krogstrup
Keyword(s):  
Somatic Embryogenesis ◽  
Norway Spruce ◽  
Growth Regulators ◽  
Embryogenic Callus ◽  
Dichlorophenoxyacetic Acid ◽  
Skoog Medium ◽  
Early Stages ◽  
Murashige And Skoog Medium ◽  
2,4 Dichlorophenoxyacetic Acid

Embryos from imbibed ripe seeds and cotyledon expiants of 7-day-old Norway spruce (Piceaabies (L.) Karst.) seedlings produced the early stages of somatic embryogenesis. Using a modified Murashige and Skoog medium, a whitish, glossy callus was induced consisting of translucent cells embedded in a mucilaginous cloudy matrix. This embryogenic callus formed on the surface of explants treated first with N-6-benzyladenine followed by 2,4-dichlorophenoxyacetic acid + 6-furfurylaminopurine (kinetin) + N-6-benzyladenine. Transfer of this callus to media lacking growth regulators resulted in the formation of numerous bipolar embryoids with suspensorlike structures. These embryoids strongly resembled repressed embryos in polyembryonic seeds.

scholarly journals Effect of some factors on the growth and regeneration of cell suspension of Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv.)

2016 ◽  
Vol 14 (1) ◽  
pp. 75-86
Author(s):  
Lê Kim Cương ◽  
Nguyễn Hồng Hoàng ◽  
Dương Tấn Nhựt
Keyword(s):  
Cell Suspension ◽  
Butyric Acid ◽  
Sucrose Concentration ◽  
Growth Curves ◽  
Dichlorophenoxyacetic Acid ◽  
Naphthaleneacetic Acid ◽  
Cultural Conditions ◽  
A Cell ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Very High

Ngoc Linh ginseng also known as Vietnamese ginseng (Panax Vietnamensis Ha et Grushv.) is a perennial medicinal plant. This plant is extremely rare and belongs to the Araliaceae family. Scientists are focusing on studies of Ngoc Linh ginseng nowadays. In this research, the effects of 2,4-dichlorophenoxyacetic acid (2,4-D), a-naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA), 6-benzylaminopurine (BA), Kinetin (KIN), mineral salt formulations and cultural conditions, pH, sucrose concentration, medium volume on cell suspension culture of Panax vietnamensis Ha et Grushv. were investigated. In addition, growth curves and the effect of several plant grow regulators including a-naphthaleneacetic acid (NAA), indole-3-butyric acid (IBA), 6-benzylaminopurine (BA) on the regeneration of Ngoc Linh ginseng‘s cell suspension were also presented in this study. After 28 days in culture, the results showed that the best growth of a cell suspension of Ngoc Linh ginseng were obtained on ½MS liquid medium supplemented with 1.5 mg/l NAA, 50 g/l sucrose and the most suitable pH was 6.3. The acceptable medium volume for cell suspension growth was 30 ml. The growth curve of Ngoc Linh ginseng’s cell suspension showed that it should be subcultured at the beginning of the stationary phase approximately the 14th-16th day of culture. Ngoc Linh ginseng’s cell suspension exhibited the strongest growth at this time. When Ngoc Linh ginseng’s cell suspension was transferred to fresh medium, somatic embryos were formed in MS medium supplemented with 3.0 mg/l NAA after 30 days culture. The results shown that the potential regeneration of cell suspension of Ngoc Linh ginseng is very high.

scholarly journals Micropropagation of Cascade Huckleberry, Mountain Huckleberry, and Oval-leaf Bilberry Using Woody Plant Medium and Murashige and Skoog Medium Formulations

2007 ◽  
Vol 17 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Danny L. Barney ◽  
Omar A. Lopez ◽  
Elizabeth King
Keyword(s):  
Plant Growth ◽  
Growth Regulators ◽  
Shoot Growth ◽  
Woody Plant ◽  
Skoog Medium ◽  
Average Survival ◽  
Murashige And Skoog Medium ◽  
Woody Plant Medium ◽  
Half Strength

Two concentrations of two in vitro media formulations were evaluated for their effects on survival, shoot growth, and percentage rooting of cascade huckleberry (Vaccinium deliciosum), mountain huckleberry (V. membranaceum), and oval-leaf bilberry (V. ovalifolium). Two-node stem sections from established microshoots were cultured on full- or half-strength modified Murashige and Skoog medium (FSMS and HSMS) or full- or half-strength modified woody plant medium (FSWPM and HSWPM) unamended with plant growth regulators. Cultures were maintained at 21 °C with a 16-hour photoperiod for 98 days. Survival on FSMS was reduced by ≈44% for cascade huckleberry, 63% for mountain huckleberry, and 18% for oval-leaf bilberry compared with average survival on HSMS, HSWPM, and FSWPM. Explants on FSMS also produced new shoot growth having the lowest dry weights, fewest shoots, and shortest shoots of the four media. Explant rooting percentages were also least on FSMS. For cascade huckleberry and oval-leaf bilberry, HSMS, HSWPM, and FSWPM all appeared suitable for general culture. For mountain huckleberry, both woody plant medium formulations produced greater microshoot dry weights, average shoot lengths, and explant rooting percentages compared with HSMS. These results are the first published on micropropagation for cascade huckleberry and oval-leaf bilberry, and provide starting protocols for commercial propagation and further research on micropropagation of these species.

Invitro plant regeneration via callus culture of mature Salixexigua

1989 ◽  
Vol 19 (12) ◽  
pp. 1634-1638 ◽  
Author(s):  
Michael U. Stoehr ◽  
Mantang Cai ◽  
Louis Zsuffa
Keyword(s):  
Woody Plant ◽  
Leaf Explants ◽  
Plantlet Regeneration ◽  
Clonal Variation ◽  
Dichlorophenoxyacetic Acid ◽  
Shoot Induction ◽  
Callus Production ◽  
Woody Plant Medium ◽  
Half Strength ◽  
2,4 Dichlorophenoxyacetic Acid

Callus induction, callus growth, and plantlet regeneration were examined using leaf explants of three Salixexigua clones. Calli were initiated on three basal media supplemented with 0.1 mg/L (0.44 μM) or 0.5 mg/L (2.2 μM) of benzylaminopurine and 0.1 mg/L (0.45 μM) or 0.5 mg/L (2.3 μM) of 2,4-dichlorophenoxyacetic acid in a factorial fashion. After 7 weeks of growth, callus production was highest on woody plant medium. Developed calli were subsequently cultured on woody plant medium supplemented with either 0.1 or 0.5 mg/L of benzylaminopurine for shoot induction. Shoot primordia developed only at 0.1 mg/L (0.44 μM) benzylaminopurine in two clones, suggesting clonal variation in organogenic response. Shoots larger than 1.0 cm in length were successfully rooted in half-strength Murashige and Skoog medium without hormones.

Selectivity of auxin for induction and growth of callus from excised embryo of spring and winter wheat

1984 ◽  
Vol 62 (7) ◽  
pp. 1393-1397 ◽  
Author(s):  
M. D. Zhou ◽  
T. T. Lee
Keyword(s):  
Winter Wheat ◽  
Chinese Spring ◽  
Shoot Growth ◽  
Callus Formation ◽  
Triticum Aestivum L ◽  
Dichlorophenoxyacetic Acid ◽  
Naphthaleneacetic Acid ◽  
2,4 Dichlorophenoxyacetic Acid ◽  
Methoxybenzoic Acid

The callus-promoting activity of most commonly known as well as some rarely tested auxins was compared with that of 2,4-dichlorophenoxyacetic acid (2,4-D) for in vitro culture of the excised embryo of spring and winter wheat (Triticum aestivum L.), cv. Chinese Spring and cv. Fredrick. Different auxins in a concentration range from 1 to 50 μM showed widely different activities. Also the two wheat cultivars responded differently to the auxins. When rapid callus formation with limited root growth was used as the basis for comparison, 2-(2-methyl-4-chlorophenoxy)propionic acid (2-MCPP), α-naphthaleneacetic acid, 3,6-dichloro-2-methoxybenzoic acid (dicamba), 4-amino-3,5,6,trichloropicolinic acid (picloram), γ-(2,4-dichlorophenoxy)butyric acid, 2,4,5-trichlorophenoxyacetic acid, and 2,4,5-trichlorophenoxypropionic acid, in the order of effectiveness, were superior to 2,4,-D for callus induction from the embryo of 'Chinese Spring,' although the concentration required was higher than that of 2,4-D. For the winter wheat 'Fredrick,' however, only picloram, dicamba, and 2-MCPP performed as well as 2,4-D. All auxins tested promoted shoot growth; 2-methyl-4-chlorophenoxypropionic acid was most effective for 'Chinese Spring,' whereas picloram was most effective for 'Fredrick.'

Micropropagation of Scaevola —Australian native of ornamental horticulture

1998 ◽  
Vol 38 (4) ◽  
pp. 399 ◽  
Author(s):  
P. L. Bhalla ◽  
K. Sweeney
Keyword(s):  
Tissue Culture ◽  
Butyric Acid ◽  
High Survival ◽  
Root Initiation ◽  
Free Medium ◽  
Skoog Medium ◽  
Survival Percentage ◽  
Murashige And Skoog Medium ◽  
Ornamental Horticulture

Summary. A number of commercially available cultivars of Scaevola aemula, S. albida, S. phlebopetala, S. striata and material collected from the wild of S. glandulifera, S. hookeri and S. ramonissima were successfully propagated by tissue culture. Shoot segments 3–4 cm in length were multiplied in Murashige and Skoog medium without hormones. Addition of 25–150 µmol kinetin/L in the micropropagation medium of S. aemula and S. phlebopetala resulted in the formation of deformed shoots. Tissue cultured shoots rooted in hormone-free medium in 4–6 weeks. Indole-3-butyric acid (10–20 µmol/L) had an effect on rate of root initiation of S. phlebopetala but not on percentage of rooting. A high survival percentage (>95%) was obtained when plants were transferred to soil under glasshouse conditions indicating that micropropagation of Scaevola is feasible.

Manipulation of desiccation-sensitive axes of wampee (Clausena lansium) to facilitate increased dehydration tolerance

2000 ◽  
Vol 10 (3) ◽  
pp. 397-400
Author(s):  
J.R. Fu ◽  
X.M. Huang ◽  
S.Q. Songa
Keyword(s):  
Butyric Acid ◽  
Water Loss ◽  
Adventitious Roots ◽  
Woody Plant ◽  
Dehydration Tolerance ◽  
Woody Plant Medium ◽  
Napthaleneacetic Acid ◽  
Pre Treatment

AbstractThe plumules of newly-excised wampee embryos, which are more sensitive to dehydration than the roots, became more resistant to water loss when axes were allowed to sprout on woody plant medium [WPM; McCown and Lloyd (1981) Hortscience16, 453] before being dried. Pre-treatment of sprouting axes (seedlings) with sucrose incorporated in the WPM enhanced survival. Although the roots withered following further dehydration of seedlings cultured on WPM containing 60% sucrose, excised plumules were capable of generating adventitious roots when a combination of 10 mM α-napthaleneacetic acid and 10 mM indole-3-butyric acid was used during subsequent in vitro incubation.

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