Effects of Plant Growth Regulators on In vitro Regeneration of Malaysian Indica rice (Oryza sativa L.) cv. MR219 by Shoot Apical Meristem

2012 ◽  
Vol 6 (4) ◽  
pp. 180-187 ◽  
Author(s):  
Lavanya Silvarajan ◽  
Rosimah Nulit ◽  
Faridah Qamaruz Za
Keyword(s):  
Oryza Sativa ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
In Vitro Regeneration

scholarly journals Phytohormones Influence on the In-Vitro Regeneration of Saccharum Officinarum L. from Apical Meristem Culture

2014 ◽  
Vol 5 (2) ◽  
pp. 85 ◽  
Author(s):  
Ejiroghene Felix Lawyer ◽  
Z. O. Jamaleddine ◽  
P. T. Lyam ◽  
I. T. Borokini ◽  
A. A. Adedeji ◽  
...  
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Apical Meristem ◽  
In Vitro Regeneration ◽  
Saccharum Officinarum ◽  
Naphthalene Acetic Acid ◽  
Root Induction ◽  
Indole Butyric Acid

Growth regulators especially auxins and cytokinins are critical for plant in-vitro regeneration. The effect of these plant growth regulators on in-vitro propagation of Saccharum officinarum L (Sugarcane) was investigated. In vitro response of two different varieties of sugarcane (NCS 005 and NCS 008) to Plant Growth Regulators was obtained in this study. Formation of buds was obtained on shoot apical meristem when cultured on MS (Murashige and Skoog) medium supplemented with 0.1mg/l BAP (6-Benzylaminopurine). After two weeks of initiation, regenerated meristem was inoculated into MS (Murashige and Skoog) fortified with different concentrations and combination of cytokinins. Shoot multiplication was optimal on 0.5mg/l BAP + 0.25 mg/l Kin(Kinetin) for NCS 005 variety while for NCS 008 variety, no significant (P≥0.05) difference was observed between 1.5mg/l BAP and 1.5mg/l BAP +0.5mg/l Kin. The best root induction for in vitro derived shoots was obtained on 1.0 mg/l NAA (Naphthalene acetic acid) and 2.0 mg/l IBA( Indole butyric acid) for both varieties of sugarcane within ten days of culture transfer. Successfully established plantlets showed excellent growth response when weaned under regulated green house conditions.

scholarly journals The Effect of Plant Growth Regulators (PGRs) on Efficient Regeneration of 12 Recalcitrant Indica Rice (Oryza Sativa L.) Genotypes

2021 ◽  
Vol 17 (2) ◽  
pp. 148-159
Author(s):  
Md. Nazmul Hasan ◽  
Fahmid H. Bhuiyan ◽  
Hammadul Hoque ◽  
Nurnabi Azad Jewel ◽  
Md. Ashrafuzzaman ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Efficient Regeneration

scholarly journals Roles of plant growth regulators on flowering of rose (Rosa hybrida L.’Red Rose’)

2021 ◽  
Vol 947 (1) ◽  
pp. 012039
Author(s):  
Linh Tran Minh Hong ◽  
Tu Cam Trinh ◽  
Viet Trang Bui ◽  
Huong Thanh Tran
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Rosa Hybrida ◽  
Floral Meristem ◽  
Flower Bud ◽  
Meristem Cell

Abstract Rose is the most popular ornamental flower all over the world, which is used as garden plants and cut flowers. In the case of Rosa hybrida L. ’Red Rose’, flowering provides the major developmental transition from the vegetative to the reproductive stage, and reproduction is one of the most important phases in an organism’s life cycle. In this study, the morphological and physiological changes during the flower development of rose, which is planted in the garden, and roles of plant growth regulators on the flowering of in vitro vegetative shoots of rose were analyzed. The development of a flower includes three stages: the shoot apical meristem, floral meristem, floral bud. Levels of cytokinin, auxins, and gibberellins increased in the transition of meristem from the shoot apical meristem to the floral meristem stage. Plant growth regulators have important effects on the shoot apical meristem cell division and flowering. The combination of 0.5 mg.L−1 GA3, 0.1 mg.L−1 NAA, 2.5 or 3.0 mg.L−1 BA to Murashige and Skoog (MS) medium induces the floral transition of the in vitro vegetative shoots with the highest percentage (41%) as well as growth and development in comparison to the other treatments after 10 weeks. Then, the in vitro floral meristem continuously developed into a flower bud after 12 weeks.

scholarly journals Effect of plant growth regulators and explants on callus induction and study of antioxidant potentials and phenolic metabolites in Salvia tebesana Bunge

2020 ◽  
Vol 44 (2) ◽  
pp. 163-173 ◽  
Author(s):  
Niloofar Hemmati ◽  
Monireh Cheniany ◽  
Ali Ganjeali
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Phenolic Acids ◽  
Growth Regulators ◽  
Callus Induction ◽  
Shoot Apical Meristem ◽  
Apical Meristem ◽  
Total Phenolic ◽  
Scale Production

This study was undertaken to investigate the effect of different plant growth regulators (PGRs) on callus induction in Salvia tebesana explants grown in vitro and to evaluate the content of secondary phenolic compounds and their antioxidant potential. The explants (shoot apical meristem, leaf and petiole) were dissected from an 8-week-old plant of S. tebesana growing in vitro and cultured on MS media containing different concentrations of 2,4-D (0, 0.5, 1, 1.5 and 2 mg L-1), NAA (0, 0.5 and 1 mg L-1) and BAP (0, 0.5 and 1 mg L-1), either alone or in a blend with each other. Morphological characteristics of the callus (consistency and colour), biomass increase based on fresh and dry weight and the percentage of induction were recorded after 56 days. Levels of total phenols, ortho-diphenols, phenolic acids, flavonoids, proanthocyanidins and flavonols of callus, as well as antioxidant activities, were evaluated in vitro. The maximum callus formation (100%) was obtained from shoot apical meristem on MS medium supplemented with 0.5 and 1.5 mg L-1 2,4-D + 1 mg L-1 BAP and with 1 and 1.5 mg L-1 2,4-D + 0.5 mg L-1 BAP, whereas the highest fresh (15.06 ? 0.88 g) and dry (0.33 ? 0.02 g) weights of call were observed in a medium containing1.5 mg L-1 2,4-D + 0.5 mg L-1 NAA. It was noted that MS media augmented with combined PGRs had the highest accumulation of polyphenols, phenolic acids and flavonoid compounds, with levels of content varying in the following order: 2,4-D + BAP > NAA + BAP > 2,4-D + NAA. Strong linear correlations were established between total phenolic content of callus extracts and results of the DPPH and FRAP assays (r2 = 0.896 and r2 = 0.946, p < 0.01, respectively). The obtained results suggest that the described method could be utilised as a tool for large-scale production of medicinal metabolites of S. tebesana by tissue culture.

scholarly journals Optimization of selected plant growth regulators on callus induction of Oryza sativa L. var MR 219

Food Research ◽  
2021 ◽  
Vol 5 (S4) ◽  
pp. 38-45
Author(s):  
Siti Nur Adila H. ◽  
Nor Azma Y.
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
Callus Induction ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Crop Improvement ◽  
Naphthalene Acetic Acid

MR 219, an indica rice from a cross between MR 137 and MR 151 is a long-grain rice variety of high-yielding, good quality of shape and taste, short maturation as well as resistance to blast and bacterial leaf blight. However, it is regarded as a recalcitrant variety due to its low ratio of callogenesis and regeneration in in vitro culturing. This would be a hindrance to crop improvements such as genetic transformation and other crop improvement methods. The objective of this study was to optimize the concentrations and combinations of plant growth regulators (PGRs) which were 2,4-Dichlorophenoxyacetic acid (2,4-D), Kinetin (KIN) and Naphthalene acetic acid (NAA) on its callus induction that ranging from 0.5 to 15.0 mg/L. The callus was induced from the mature seeds of MR 219 on the Murashige and Skoog (MS) media supplemented with 4.4 g/L of MS powder with vitamins, 30.0 g/L of sucrose and 3.5 g/L of gelrite with the addition of 2,4-D, KIN and NAA in different concentrations and combinations. All media supplemented with 2,4- D had successfully induced the callus and 2.0 mg/L of 2,4-D was the best concentration for the callus induction with a 100% success rate. The addition of 15.0 mg/L of NAA, provided less time taken for callus induction with better callus morphology which resulted in fewer browning problems.

scholarly journals In vitro: Influence of Various Concentrations of Plant Growth Regulators (BAP & NAA) and Sucrose on Regeneration of Chenopodium quinoa Willd. Plant

2020 ◽  
pp. 34-43
Author(s):  
Fayza R. Al Gethami ◽  
Hameda El Sayed Ahmed El Sayed
Keyword(s):  
Plant Growth ◽  
Plant Growth Regulators ◽  
Growth Regulators ◽  
In Vitro Regeneration ◽  
Chenopodium Quinoa ◽  
Naphthalene Acetic Acid ◽  
Cotyledonary Nodes ◽  
Half Strength ◽  
The Media

In vitro: regeneration of Chenopodium quinoa Willd. was achieved from cotyledonary nodes explants. In this study, used 6-Benzylaminopurine (BAP) and α-Naphthalene Acetic Acid (NAA) of plant growth regulators with different concentrations individually as well as in combination and used different concentrations of sugar (sucrose) with different concentrations. For was rooting, used half strength (½MS), full-strength MS and ½ MS supplemented with 0.2 mg/l of NAA. The results mentioned, explant responding (%) to multiplication was about 73% for all BAP treatments compared with control and average numbers of shoot increased with increased BAP concentration except 5 mg/l of BAP. The highest explant responding (%) was in media supplemented BAP without NAA compared other treatments noted that the media with combination of BAP and NAA gives formation of callus in bases of the plantlets. Also, the result inducted the combinations between (BAP–NAA) was highly significantly (P≤ 0.001) and less effective on number of shoots where the highest number of shoot was 3.40 in media with 3 mg/l BAP compared other treatments. The highest of explant responding 93.33% was in media supplement with 10 g/l sucrose and (10 g/l sucrose + 3 mg/l BAP), but sucrose level for good greening and developed shoots (4 shoots) was in medium supplement with 10 g/l sucrose. The shoots rooted well on half-strength MS medium with 60% percentage of root. The rooted shoots were acclimatized and transferred to green house to follow their development.

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