Combining Ability Analysis of In Vitro Callus Formation and Plant Regeneration in Red Clover

Crop Science ◽  
1997 ◽  
Vol 37 (4) ◽  
pp. 1302-1305 ◽  
Author(s):  
Y. S. Poerba ◽  
K. H. Quesenberry ◽  
D. S. Wofford ◽  
P. L. Pfahler
1970 ◽  
Vol 36 (3) ◽  
pp. 397-406 ◽  
Author(s):  
BP Ray ◽  
L Hassan ◽  
KM Nasiruddin

The effect of different explants and concentrations of BAP and NAA on induction of callus and plant regeneration of brinjal cv. Jhumki were investigated. The treatment combinations were BAP (0. 2.0. 3.0, and 4.0 mg/l) and NAA (0. 0.1, 0.5, and 1.0 mg/l). The rate of callus formation varied in different treatments. The highest amount of callus (48.66%) was produced on MS medium containing 2.0 mg/l BAP and 0.5 mg/l NAA from stem, and 8.2 days required for callus induction. The highest fresh weight of callus was 1.12g from stem and 0.48g from root. The number of shoot regenerated through callus from stem containing 2.0 mg/l BAP and 0.5 mg/l NAA was 3.4 (23.287%) and days required for 38.8 days. All regenerated plantlets survived in normal environment. Keywords: NAA; BAP; regeneration; brinjal. DOI: http://dx.doi.org/10.3329/bjar.v36i3.9268 BJAR 2011; 36(3): 397-406


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Shakra Jamil ◽  
Rahil Shahzad ◽  
Ghulam Mohyuddin Talha ◽  
Ghazala Sakhawat ◽  
Sajid-ur-Rahman ◽  
...  

Sugarcane contributes 60–70% of annual sugar production in the world. Somaclonal variation has potential to enhance genetic variation present within a species. Present study was done to optimize an in vitro propagation protocol for sugarcane. The experiments included four varieties, 9 callus induction media, 27 regeneration media, and 9 root induction media under two-factor factorial CRD. Data were recorded on callus induction, embryogenic callus formation, shoot elongation (cm), root induction, and plant regeneration. Statistically significant differences existed between genotypes and treatments for callus induction (%), embryogenic callus formation (%), shoot elongation (cm), root induction, and plant regeneration (%). All parameters showed dependency on genotypes, culture media, and their interaction. Highest callus induction (95%) embryogenic callus formation (95%) was observed in callus induction media 5. Highest plantlet regeneration (98.9%) capacity was observed in regeneration media 11 whereas maximum shoot elongation (12.13 cm) and root induction (8.32) were observed in rooting media 4. G1 showed best response for all traits and vice versa for G4. Hence it was concluded that G1, callus induction media 5, regeneration media 11, and rooting media 4 are the best conditions for in vitro propagation of sugarcane.


2015 ◽  
Vol 9 (3–4) ◽  
pp. 99-106
Author(s):  
H. O. Dobrova ◽  
◽  
І. S. Zambriborsh ◽  
О. L. Shestopal ◽  
◽  
...  

1970 ◽  
Vol 46 (3) ◽  
pp. 359-364
Author(s):  
AN Chowdhury ◽  
MZ Rahman ◽  
A Samad ◽  
AKMS Alam ◽  
S Khaleda

The effect of cytokinins on callus proliferation from cotyledons and plantlet development was studied in cotton. The frequency of callus induction was observed on MS medium enriched with a variety of cytokinins in different concentrations. With the increase of cytokinin concentration, the percentage of callus formation, percentage of shoot developing calli and number of shoots/calli were increased. Among the three different cytokinins studied, BA showed the highest performance. The highest percentage of callus (6.55%) and shoot developing calli (5.87%) was obtained on MS with 1.0 mg/l BA. Highest number of shoots (3.02) per calli was observed on MS media supplemented with 1.0 mg/l Kn. The rooting media composed of MS medium, 0.6% agar, sucrose and fortified with 2.0 mg/l NAA induced root development at the highest percentage (41.23%) with maximum number of roots (3.61) per cutting and length of root (3.62 cm) per culture. The plantlets were acclimatized in natural conditions. Key words: In vitro; Callus; Cotyledons; Cytokinin; Plantlet; Acclimatization DOI: http://dx.doi.org/10.3329/bjsir.v46i3.9043 BJSIR 2011; 46(3): 359-364


Author(s):  
K. Nandha Abhijeeta ◽  
B. B Madariya Rajesh

An efficient method for plant regeneration via callus formation has been developed in pigeonpea using two varieties as BDN-2 and GT-101. Three different explants viz. leaf, hypocotyl and root excised from 15-20 days old in vitro raised seedlings were cultured on basal MS medium. Greenish coloured callus were observed using various media according to explants. More shoots were found in MS + 1.0 mg/l NAA + 4.0 mg/l Adenine and roots on Elongated shoots in MS + 1.0 mg/l IAA media. Rooted plants were transferred in pot for acclimatization.


2017 ◽  
Vol 59 (2) ◽  
pp. 31-39 ◽  
Author(s):  
Csongor Freytag ◽  
Sándor Attila Pabar ◽  
Zita Demeter ◽  
Ádám Simon ◽  
Anna Resetár ◽  
...  

AbstractWe aimed to produce tissue cultures and plant regeneration from endangered Crocus species: C. scepusiensis, C. tommasinianus, C. vittatus (“Verni” series of the genus) and C. banaticus. For initiation of cultures we used a plant growth regulator (PGR) combination used for in vitro culture of saffron and its relatives: 10 mg L-1 α-naphthaleneacetic acid (NAA) and 1 mg L-1 6-benzyladenine (BA). Shoot tips of young seedlings (C. scepusiensis) and corms (for the rest of species) were used as explants. C. scepusiensis explants developed into organogenic calli. On media with decreased NAA and with or without increased BA concentration, calli produced stigma-like structures and/or shoots and whole plants. In the other species, callus initiation medium induced callus formation with abundant somatic embryos. In C. tommasinianus, embryos developed shoots when auxin content of medium was decreased. In C. banaticus, a decrease of auxin with or without an increase in cytokinin content led to shoot or whole plant regeneration, as in C. scepusiensis. In the case of C. vittatus and C. banaticus, initiation and/or maintenance of cultures on indole-3-butyric acid (IBA) and increased sucrose concentration stimulated whole plant regeneration and in vitro cormlet development. C. scepusiensis and the rest of cultures (organogenic vs. embryogenic) differed at the biochemical level: C. scepusiensis cultures had higher (yet still low) enzymatic antioxidant (catalase, peroxidase) activities. With respect to catalase isoenzyme patterns, C. banaticus was different from the rest of cultures, demonstrating its distinct taxonomical position. Besides germplasm preservation use of the present cultures, they have a potential biotechnological value.


2000 ◽  
Vol 51 (2) ◽  
pp. 305 ◽  
Author(s):  
Diah Azria ◽  
Prem L. Bhalla

In vitro plant regeneration from callus induced from embryos of mature seeds of 4 Australian varieties of rice was studied. Observations of callus induction on MS and N6 media indicated that MS medium supplemented with 0.5–2 mg/L of 2,4-D is suitable for callus formation from the varieties tested. Comparison of shoot initiation on medium containing BAP, BAP + NAA, and TDZ + NAA indicated that these varieties prefer BAP + NAA or TDZ + NAA in the shoot initiation medium. Partial desiccation, resulting in up to 20% loss of fresh weight of callus, significantly increased the regeneration frequency of the 4 rice varieties tested. The varieties showed varied response to number of shoots produced per callus. Regenerated shoots were rooted on plant growth regulator free medium. The plants regenerated were phenotypically normal and fertile. Our study showed that callus derived from mature embryos of these rice varieties are amenable to multiple shoot formation, and could be used for genetic transformation studies.


Plant Methods ◽  
2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Yeong Yeop Jeong ◽  
Hun-Young Lee ◽  
Suk Weon Kim ◽  
Yoo-Sun Noh ◽  
Pil Joon Seo

Abstract Background Plants have a remarkable reprogramming potential, which facilitates plant regeneration, especially from a single cell. Protoplasts have the ability to form a cell wall and undergo cell division, allowing whole plant regeneration. With the growing need for protoplast regeneration in genetic engineering and genome editing, fundamental studies that enhance our understanding of cell cycle re-entry, pluripotency acquisition, and de novo tissue regeneration are essential. To conduct these studies, a reproducible and efficient protoplast regeneration method using model plants is necessary. Results Here, we optimized cell and tissue culture methods for improving protoplast regeneration efficiency in Arabidopsis thaliana. Protoplasts were isolated from whole seedlings of four different Arabidopsis ecotypes including Columbia (Col-0), Wassilewskija (Ws-2), Nossen (No-0), and HR (HR-10). Among these ecotypes, Ws-2 showed the highest potential for protoplast regeneration. A modified thin alginate layer was applied to the protoplast culture at an optimal density of 1 × 106 protoplasts/mL. Following callus formation and de novo shoot regeneration, the regenerated inflorescence stems were used for de novo root organogenesis. The entire protoplast regeneration process was completed within 15 weeks. The in vitro regenerated plants were fertile and produced morphologically normal progenies. Conclusion The cell and tissue culture system optimized in this study for protoplast regeneration is efficient and reproducible. This method of Arabidopsis protoplast regeneration can be used for fundamental studies on pluripotency establishment and de novo tissue regeneration.


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