scholarly journals Morphological Variations in Buddleia Induced by Gamma Ray Irradiation

HortScience ◽  
2012 ◽  
Vol 47 (1) ◽  
pp. 81-83 ◽  
Author(s):  
Wenhao Dai ◽  
Victoria Magnusson
Keyword(s):  
Gamma Rays ◽  
Gamma Ray ◽  
Flower Color ◽  
Shoot Tips ◽  
Mutation Induction ◽  
Naphthalene Acetic Acid ◽  
Ms Medium ◽  
Morphological Variations ◽  
Gamma Ray Irradiation

Buddleia species is commonly used as a perennial for landscaping as a result of its heavy flowers and long bloom period. However, this species has a few concerns such as lack of flower color, excessive growth, and an invasive nature. Attempts to improve Buddleia using conventional breeding methods have resulted in limited success. In this study, mutagenesis by gamma ray irradiation was used to induce genetic variations. In vitro shoot tips of two Buddleia cultivars, B. davidii ‘Potters Purple’ and Buddleia ‘Lochinch’, were exposed to 0 to 150 Gy gamma rays and then recovered in Murashige and Skoog (MS) medium supplemented with 2.5 μM benzyladenine (BA). Shoots that recovered from the gamma ray treatment were rooted in half-strength MS medium with 0.5 μM naphthalene acetic acid (NAA) and grown in the greenhouse. The growth of shoot tips was inhibited after they were exposed to gamma rays. An average of 50.8% of shoots treated with 50 Gy gamma rays were recovered, whereas only 9.7% and 6.5% of shoots recovered when exposed to 100 and 150 Gy gamma rays, respectively. After transfer to the greenhouse, a few plants showed reduced growth with some dying before they reached the flowering stage. Various variations including characteristics of leaves (shape, size, hairs), stems (shape, internode length, branching), flowers (color, size, and structure), and plant stature were observed. This research demonstrates that in vitro mutation induction using gamma ray irradiation could be a useful protocol to develop new cultivars or genetic materials for further breeding of Buddleia or other related species.

In vitro propagation of Camellia fascicularis: a plant species with extremely small populations

2020 ◽  
Vol 100 (2) ◽  
pp. 202-208
Author(s):  
Mengting Wang ◽  
Guiliang Zhang ◽  
Peiyao Xin ◽  
Yun Liu ◽  
Bin Li ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Large Scale ◽  
In Vitro Regeneration ◽  
Germplasm Conservation ◽  
Shoot Multiplication ◽  
Shoot Tips ◽  
Naphthalene Acetic Acid ◽  
Multiplication Rate ◽  
Ms Medium

Camellia fascicularis is an endangered evergreen ornamental plant with pale yellow flowers. An efficient and reproducible in vitro regeneration method is required for its large-scale propagation and germplasm conservation. In this study, one axillary bud per nodal stem was obtained from C. fascicularis cultured on Murashige & Skoog (MS) medium containing 0.1 mg L−1 indole-3-acetic acid (IAA) combined with 1.0 mg L−1 6-benzylaminopurine (BA). Axillary buds from the stem segments were transferred to modified woody plant medium (WPM) supplemented with 3.0 mg L−1 BA in combination with 0.3 mg L−1 IAA for multiplication, thereby resulting in a high shoot multiplication rate of 6.8. Multiple shoots were divided into nodal stems and shoot tips and were induced to root. The shoot tips were induced to root by culturing on one-half MS medium supplemented with 2.0 mg L−1 indole-3-butyric acid (IBA) in combination with 0.3 mg L−1 α-naphthalene acetic acid (NAA), which resulted in 76.0% rooting efficiency with 2.3 roots per shoot. The optimal hormone ratio for inducing rooting of nodal stems was 1.0 mg L−1 IBA in combination with 2.0 mg L−1 NAA, which resulted in 72.7% rooting efficiency with 1.7 roots per nodal stem. These two rooted plantlets were successfully acclimatized and established in a greenhouse.

scholarly journals Formation of upland rice drought-tolerant mutants by mutation induction and in vitro selection

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Rossa Yunita ◽  
ISWARI S. DEWI ◽  
ENDANG GATI LESTARI ◽  
RAGAPADMI PURNAMANENGSIH ◽  
SUCI RAHAYU ◽  
...  
Keyword(s):  
In Vitro Selection ◽  
Gamma Ray ◽  
Upland Rice ◽  
Mutation Induction ◽  
Selection Methods ◽  
Rice Varieties ◽  
Drought Tolerant ◽  
Gamma Ray Irradiation

Abstract. Yunita R, Dewi IS, Lestari EG, Purnamanengsih R, Rahayu S, Mastur. 2020. Formation of upland rice drought-tolerant mutants by mutation induction and in vitro selection. Biodiversitas 21: 1476-1482. Increased production can be done by increasing the planting area, but the available land is sub-optimal land with drought stress. Drought-tolerant rice varieties are needed to utilize this land. To create drought-tolerant rice can use induction mutation and in vitro selection methods. This study aims to obtain tolerant upland rice mutants through mutation and in vitro selection. The parents used were Batutegi and Situpatenggang varieties. This research consisted of several main activities, namely callus induction, determination of LD 50% value ofPEG determination of LC 50% value of gamma-ray irradiation, mutation induction and in vitro selection, bud regeneration and acclimatization. The results of this study are mutant callus formed by gamma-ray irradiation at a dose of 24.68 Gy for Situpatenggang and 22.15 Gy for Batutegi (LD50) and selected on PEG media at a dose of 24.11% for Situpatenggang and 25.18% for Batutegi (LC50). The mutant callus regenerated on MS + BA 3 mg/L + Zeatin 0.1 mg/L produced 83 Situpatenggang shoots and 73 Batutegi shoots and successfully acclimatized were 52 Situpatenggang lines and 49 Batuteg linesBatutegi

scholarly journals Phenotypic variation and genetic alteration of Spathoglottis plicata resulted from in vitro cultured seed irradiated with X-Ray

2018 ◽  
Vol 19 (5) ◽  
pp. 1642-1648
Author(s):  
SUYITNO ALOYSIUS ◽  
AZIZ PURWANTORO ◽  
KUMALA DEWI ◽  
ENDANG SEMIARTI
Keyword(s):  
Phenotypic Variation ◽  
Flower Color ◽  
Genetic Alteration ◽  
Mutation Induction ◽  
Wild Type ◽  
Genetic Changes ◽  
Orchid Species ◽  
X Ray ◽  
Morphological Variations

Aloysius S, Purwantoro A, Dewi K, Semiarti E.. 2018. Phenotypic variation and genetic alteration of Spathoglottis plicata resulted from in vitro cultured seed irradiated with X-Ray. Biodiversitas 19: 1642-1648. A terrestrial orchid species among genus Spathoglottis as widely cultivated is S. plicata. Variability development of the species through mutation induction has been carried out, but its morphological variations and genetic changes have not been investigated. The purpose of this study is to identify the phenotypic variation and genetic alteration of S. plicata resulted from in vitro cultured seed irradiated with X-ray. Radiation was given at the doses of 0; 6; 12; 18 and 24 rad. The samples were surviving plants resulted from irradiated seeds. Phenotypic variations observed were the number, length and width of the leaf, number of tiller, and flower characteristics. Genetic alteration was detected from DNA homologous POH1, a key gene determining of shoot morphogenesis. Results show that there are variations of leaf color, length and width of the leaf, and the number of the tiller. Plants start to flower at the age of 30 months. The plants flowering reach 64.7% (WT), 50.0% (6 rad), 33.3% (12 rad), 33.3% (18 rad), and 40% (24 rad). Flower color is ranged from white, white slightly purple, purplish white, light purple, reddish purple and purple, found both in mutants and wild-type groups. The alignment result of POH1 homologous DNA obtained from PCR cDNA shows the nucleotide differences at some points between mutants and wild-type that indicate the occurrence of DNA alteration. X-ray induces the changes of POH1 homologous DNA, but it has no obvious relationship to the flower variation.

scholarly journals The morphological diversity of Chrysanthemum resulted from gamma ray irradiation

2019 ◽  
Vol 20 (2) ◽  
pp. 463-467 ◽  
Author(s):  
EMI SUSILA ◽  
ARI SUSILOWATI ◽  
AHMAD YUNUS
Keyword(s):  
Gamma Irradiation ◽  
Gamma Ray ◽  
Morphological Diversity ◽  
Leaf Length ◽  
Stem Length ◽  
Mutation Induction ◽  
Market Demand ◽  
Morphological Variations ◽  
Color Changes ◽  
Gamma Ray Irradiation

Abstract. Susila E, Susilowati A, Yunus A. 2019. The morphological diversity of Chrysanthemum resulted from gamma ray irradiation. Biodiversitas 20: 463-467. Chrysanthemum is a popular ornamental plant. The high market demand makes breeders develop new cultivars to meet market preferences. One way to get superior varieties of Chrysanthemum is by using gamma ray mutation induction which will increase the morphological variations. The purpose of this study is to determine the Chrysanthemum’s morphological diversity resulted from gamma irradiation through morphological markers. This experimental research used a completely randomized design (CRD) with one factor, i.e. radiation doses: 0 Gy (control), 10 Gy, 15 Gy, and 20 Gy. The observations were carried out qualitatively and quantitatively. The data obtained were analyzed using the SPSS 15.0 and the NTSYS (Numerical Taxonomy and Multivariate Analysis System) 2.02 program. The results showed that increasing the dose of gamma irradiation inhibited plant growth. Irradiation at 10 Gy and 20 Gy produced the most color changes in flowers compared to other doses. The basic color of 0 Gy irradiation is purple. Irradiation at 10 Gy and 20 Gy produced dark purple and deep red. Quantitative data showed that the treatment of gamma ray irradiation significantly affected the leaf length, leaf width, stem diameter, stem length, and diameter of flowers. The irradiation also caused changes in shape and texture of the leaves. The dendrogram showed that 20 Gy irradiation resulted the most diverse morphology compared to the control, 10 Gy and 15 Gy.

scholarly journals Influence of growth regulators and explants on shoot regeneration in carnation

2009 ◽  
Vol 36 (No. 4) ◽  
pp. 140-146 ◽  
Author(s):  
J.K. Kanwar ◽  
S. Kumar
Keyword(s):  
Acetic Acid ◽  
Shoot Regeneration ◽  
Growth Regulators ◽  
Dianthus Caryophyllus ◽  
Naphthalene Acetic Acid ◽  
Ms Medium ◽  
Shoot Bud ◽  
Dichlorophenoxy Acetic Acid ◽  
Number Of Shoots

The influence of growth regulators, explants and their interactions on in vitro shoot bud formation from callus was studied in <I>Dianthus caryophyllus</I> L. The leaf and internode explants were cultured on Murashige and Skoog (MS) medium containing different concentrations of growth regulators. The highest callus induction was observed with 2 mg/l 2,4-dichlorophenoxy acetic acid (2,4-D) and 1 mg/l benzyl adenine (BA). Out of twenty seven shoot regeneration media tested, only 2 mg/l thidiazuron (TDZ) and zeatin alone or in combination with naphthalene acetic acid (NAA) and/or indole acetic acid (IAA) could differentiate calli. The highest average number of shoots was observed with 2 mg/l TDZ and 1 mg/l IAA. Significant differences were observed in calli producing shoots and number of shoots per callus in the explants of leaf and internode. The shoots were elongated and multiplied on MS medium supplemented with 1 mg/l BA and solidified with 1% agar. The shoots were rooted and hardened with 76% survival success in pots after six weeks of transfer to the pots.

scholarly journals GROWTH OF ‘PRATA-ANA’ BANANA’S MICROSHOOTS CLONE GORUTUBA FROM SYNTHETIC SEEDS:SUBSTRATES AND BAP CONCENTRATION

2017 ◽  
Vol 39 (5) ◽  
Author(s):  
JÚLIO CÉSAR GOMES PEREIRA ◽  
SELMA SILVA ROCHA ◽  
LUCIANA CARDOSO NOGUEIRA LONDE ◽  
MARCELA CAROLINE BATISTA DA MOTA ◽  
PABLO FERNANDO SANTOS ALVES ◽  
...  
Keyword(s):  
Culture Medium ◽  
Economic Importance ◽  
Leaf Length ◽  
Naphthalene Acetic Acid ◽  
Synthetic Seed ◽  
Ms Medium ◽  
World Production ◽  
Number Of Leaves ◽  
Alginate Matrix

ABSTRACT The banana crop stands out as an activity of great social and economic importance in Brazil, which occupies the fifth place in world production. Synthetic seed production is becoming promising for a micropropagation and in vitro conservation. The aim of the study was to analyze the conversion and growth of ‘Prata-anã’ banana’s microshoots clone Gorutuba from synthetic seed in MS medium and vermiculite, different substrates and concentrations of BAP (6-benzylaminopurine) associated with ANA (acetic naphthalene acid) in the constitution of its capsule were tested. The microshoots were immersed in the sodium alginate matrix (3%) and dripped in a solution of CaCl2.2H2O (100 mM) for complexation and then in KNO3 solution (100 mM) to decomplex. The experimental design was completely randomized in a 2 x 5 factorial design (substrate x BAP concentrations), containing different substrates (MS culture medium and vermiculite) and BAP concentrations (2.22, 4.44, 6.66, 8.88 and 13.32 µmol L-1) associated with NAA (naphthalene acetic acid) 0.54 µmol L-1, totaling 10 treatments, with 4 replicates, and that each replicate containing 5 seeds. The evaluations of conversion, number of leaves, leaf length, leaf height, number of roots, root length and oxidation were performed at 30 and 60 days.The use of the MS medium provided better growth results in relation to vermiculite as substrate, in which the different BAP concentrations did not differ from each other. It was found that, in MS culture medium, BAP concentrations above 8.88 µmol L-1 in the capsule composition are not indicated for microshoots growth.

scholarly journals In vitro Shoot Cultures of Tupistra albiflora K. Larsen

2018 ◽  
Vol 17 (5) ◽  
pp. 405-411
Author(s):  
Jiraporn PALEE
Keyword(s):  
Agar Medium ◽  
Multiple Shoots ◽  
Shoot Formation ◽  
Multiple Shoot ◽  
Naphthalene Acetic Acid ◽  
Root Induction ◽  
Shoot Cultures ◽  
Ms Medium ◽  
In Vitro Shoots

To evaluate an efficient protocol for the micropropagation of Tupistra albiflora K. Larsen, the effects of N6-benzylaminopurine (BA) and naphthalene acetic acid (NAA) concentrations on multiple shoot and root induction were examined. In vitro shoots were used as the explant materials which were cultured on Murashige and Skoog (MS) agar medium supplemented with 0, 1, 2, 3 and 4 mg/L BA for 4 weeks to induce multiple shoots. It was found that the MS medium containing 3 mg/L BA induced 100 % shoot formation with the highest number of 3.2 shoots per explant (2.4-fold significantly higher than the control). For root induction, in vitro shoots were cultured on MS agar medium supplemented with 0, 1, 2, 3 and 4 mg/L NAA for 8 weeks. The results showed that the MS medium containing 1 mg/L NAA induced 100 % root formation with the highest number of 6.6 roots per explant (1.8-fold significantly higher than the control).

scholarly journals In Vitro Propagation of Digitalis trojana Ivanina., an Endemic Medicinal Plant of Turkey

2020 ◽  
Author(s):  
Nurşen Çördük ◽  
Cüneyt Aki
Keyword(s):  
Acetic Acid ◽  
Medicinal Plant ◽  
In Vitro Propagation ◽  
Leaf Explants ◽  
Naphthalene Acetic Acid ◽  
Ms Medium ◽  
Northwestern Turkey ◽  
Helen Of Troy ◽  
Endemic Medicinal Plant

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.

scholarly journals Induksi Mutasi Kalus Embriogenik Gandum (Triticum aestivum L.) melalui Iradiasi Sinar Gamma untuk Toleransi Suhu Tinggi

2015 ◽  
Vol 43 (1) ◽  
pp. 36 ◽  
Author(s):  
Ryan Budi Setiawan ◽  
Nurul Khumaida ◽  
Diny Dinarti
Keyword(s):  
High Temperature ◽  
Embryogenic Callus ◽  
Genetic Improvement ◽  
In Vitro Selection ◽  
Gamma Ray ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Randomized Design ◽  
Gamma Ray Irradiation

Mutation techniques through gamma ray irradiation is useful to support breeding programs for genetic improvement of wheat. Genetic improvement on tolerance to high temperatures is necessary for development of wheat in Indonesia. The purpose of this study was to determine the level of radiosensitivity to be used as the basis for the induction of mutations by gamma ray irradiation on embryogenic callus to obtain putative mutants with high temperature tolerance. Explants used were embryogenic callus cultured on MS medium containing 30 g L-1 sukrosa, 2 g L-1 gelrite, 2 mg L-1 2.4D and 1 mg L-1 picloram. Culture incubated for 6 weeks with temperature 20±4 oC in the room culture. Five irradiation doses (10, 20, 30, 40 and 50 Gy) were used in radiosensitivity testing. A factorial, completely randomized design was applied to the experiment. The first factor was selection temperature with three levels (25, 30 and 35 oC), and the second factor was doses of gamma ray iradiation with three levels (10, 20, and 30 Gy). The result showed that radiosensitivity levels varied among varieties, LD20: 7.79 to 18.96 Gy and LD50: 24.29-33.63 Gy. Selayar variety which has highest sensitivity value compared with Dewata and Nias. Increasing doses of iradiation and temperature decrease survival of embryogenic callus, number of embryos, and percentage of germinated plantlets. Based on in vitro selection using high temperature (25, 30, and 35 oC), the obtained 19 putative mutants were derived from embryos that appear on the surface of embryogenic callus survival after irradiation and high temperature selection.<br />Keywords: in vitro selection, putative mutant, radiosensitivity, somatic embryo

scholarly journals PENGARUH IRADIASI SINAR GAMMA [60Co] TERHADAP BACTROCERA CARAMBOLAE DREW & HANCOCK IN VITRO DAN IN VIVO

2015 ◽  
Vol 15 (1) ◽  
pp. 17
Author(s):  
Endang Sri Ratna ◽  
Kemas Usman ◽  
Indah Arastuti ◽  
Dadan Hindayana
Keyword(s):  
Gamma Ray ◽  
Lethal Dose ◽  
Fruit Fly ◽  
Probit Analysis ◽  
Adult Survival ◽  
Significance Level ◽  
Bactrocera Carambolae ◽  
Gamma Ray Irradiation

Effect of gamma irradiation [60Co] against Bactrocera carambolae Drew & Hancock in vitro and in vivo. Bactrocera carambolae Drew & Hancock is one of the most important pests on guava fruit. According to a quarantine regulation in export-import commodities, irradiation treatment is a suitable methods for eradicating infested organism, which is relatively safe for the environment. The aim of this research was to determine mortality doses and an effective dose of [60Co] gamma ray irradiation for the eradication purpose, and its implication on the survival of fruit fly B. carambolae. Two irradiation methods of in vitro dan in vivo were carried out, by exposing egg and 3rd instar larvae of B. carambolae obtained from the laboratory reared insect. Eleven doses of gamma ray irradiation of 0, 30, 50, 75, 100, 125, 150, 175, 200, 300, 450, and 600 Gy were applied, respectively. The level of 99% fruit fly mortality was estimated by the value of LD99 using probit analysis and the number of larvae, pupae and adult survival were evaluated by analysis of variance (ANOVA), and the means compared by Tukey’s test, at 5% of significance level. These result showed that the effective lethal dose (LD99) of irradiation that could be successful to eradicate eggs and 3rd instar larvae in vitro were 2225 and 2343 Gy and in vivo were 3165 dan 3177 Gy, respectively. Almost all of the treated larvae survived and developed to pupae, therefore only the minimum irradiation dose of 30 Gy allowed the pupae to develop into adults.

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