Influence of genotype and culture medium on callus formation and plant regeneration from immature embryos of Triticum turgidum Desf. Cultivars

2001 ◽  
Vol 120 (6) ◽  
pp. 513-517 ◽  
Author(s):  
J. M. GONZALEZ ◽  
E. FRIERO ◽  
N. JOUVE
2014 ◽  
Vol 644-650 ◽  
pp. 5407-5410
Author(s):  
Hui Fang Chi

s. The cotyledons, Internodes, leaves and stems of sweet broad pea were studied on tissue culture. Research results show that: The ability of different explants for callus formation and adventitious bud differentiation in different culture medium is different. The callus formation rate and sprouting rate of Internodes is significantly higher than other explants, which is a ideal material for tissue culture. The callus formation rate of Internodes was 100% in MS +BA1.0 mg/L+NAA 1.0 mg/L and MS+ 2, 4-D 0.5 mg/L; The bud differentiation is best at the medium of MS+ 6-BA 2 mg/L, which reached 86.7%; the rooting rate was 83.3% at the medium of MS+ NAA 3mg/L. The study provides a experimental basis for further study on the plant regeneration in the sweet broad pea.


1995 ◽  
Vol 43 (5) ◽  
pp. 499 ◽  
Author(s):  
AM Walmsley ◽  
RJ Henry ◽  
RG Birch

Eight Australian barley cultivars were tested for efficiency of embryonic callus initiation and plant regeneration, from immature embryo explants in tissue culture. Optimisation of tissue culture conditions was performed for cultivars Bandulla, Clipper, Schooner and Tallon in an attempt to increase regeneration frequencies to levels suitable for genetic engineering of barley. Variables tested were 2,4-D concentration, salt composition, carbon source and immature embryo explant. Optimal culture medium composition varied between cultivars. Shoot regeneration rates from culture of isolated scutellar tissues were low for all four cultivars. Halved, immature embryos produced most shoots for cultivars Clipper, Schooner and Tallon, whereas Bandulla performed best with entire immature embryo explants. Clipper (a malting barley) and Bandulla (a feed barley) are suggested as model Australian cultivars for transformation studies. Immature embryos of Bandulla produced an average of 5.3 shoots and Clipper 10.1 shoots per embryo under optimal conditions. Our results show that rates of somatic embryo and plant regeneration sufficient for use in transformation studies can be achieved for diverse Australian Barley cultivars, through systematic testing of a range of key variables including explant type and medium composition.


2014 ◽  
Vol 20 (2) ◽  
Author(s):  
Mayelín Rodríguez Urquiza ◽  
Rafael Gómez Kosky ◽  
Silvio De Jesús Mratínez ◽  
Mileydi Pons Corona ◽  
Martha Pérez Peralta ◽  
...  

<p class="Body">Existen varios protocolos de regeneración de plantas vía embriogénesis somática de <em>Sorghum bicolor</em> (L.) Moench, sin embargo los porcentajes de formación de callos con estructuras embriogénicas y regeneración de plantas son bajos. Es por ello que esta investigación tuvo como objetivo generar embriones somáticos en sorgo rojo variedad  CIAP 132-R. Se ensayaron diferentes concentraciones de 2,4-D para la formación de callos, así como tres concentraciones de ácido ascórbico para eliminar la exudación de compuestos fenólicos por el explante. También para la formación de los embriones somáticos a partir de los callos se evaluaron diferentes concentraciones de 2,4-D y 6-BAP. El mayor porcentaje de formación de callos (57.5 %) se alcanzó con 18.1 µM de 2,4-D. Con la adición al medio de cultivo de 50.0 mg.l<sup>-1</sup> de ácido ascórbico fue posible eliminar los compuestos fenólicos en el explante y en el medio de cultivo, además permitió incrementar el porcentaje de formación de callos con estructuras embriogénicas hasta un 95 %. El número mayor de embriones somáticos por callo se alcanzó en el medio de cultivo con concentraciones de 4,52 µM de 2,4-D, combinada con 2,22 µM de 6-BAP. Por primera vez, se logró la formación eficiente de embriones somáticos a partir de los callos obtenidos de semillas inmaduras  germinadas como explante inicial en la variedad CIAP 132-R.</p><p class="Body"><strong>ABSTRACT</strong></p><p class="Body">Several protocols of plant regeneration via somatic embryogenesis from <em>Sorghum bicolor</em> (L.) Moench have been development, however the percentage of calluses with embryogenic structures and plant regeneration are low. Therefore this study aimed to generate somatic embryos in red sorghum variety CIAP 132-R. Different concentrations of 2,4-D for callus formation, and three concentrations of ascorbic acid to remove phenolics exudation were assayed by explant. For the formation of embryos different concentrations of 2,4-D and 6-BAP were evaluated. The highest percentage of callus formation (57.5 %) was achieved with 18.1 µM 2,4-D. With the addition to the culture medium of 50.0 mg.l<sup>-1</sup> of ascorbic acid was possible to eliminate the phenolic compounds in the explant and in the culture medium; also it allows increasing the percentage of calluses with embryogenic structures up to 95 %. The highest number of somatic embryos per callus was achieved with a reduction in the culture medium of 2,4-D to 4.52 µM in combination with 2.22 µM 6-BAP. For the first time, the efficiency of somatic embryo formation was obtained from the freshly germinated sprouts of immature seeds as initial explant CIAP 132-R.</p>


2009 ◽  
Vol 98 (3) ◽  
pp. 303-309 ◽  
Author(s):  
Yuichi Uno ◽  
Shigeyuki Nakao ◽  
Yumiko Yamai ◽  
Ryohei Koyama ◽  
Michio Kanechi ◽  
...  

1996 ◽  
Vol 15 (5) ◽  
pp. 377-380 ◽  
Author(s):  
Carla E. Van Schaik ◽  
A. Posthuma ◽  
M. J. De Jeu ◽  
E. Jacobsen

Author(s):  
N. N. Kruglova ◽  
O. A. Seldimirova

Plant regeneration from calli in vitro is an integral part of a number of biotechnologies. Immature embryos (IE) are particularly promising as explants for obtaining morphogenic calli (MC) in cereals.


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