Somatic embryogenesis and callus formation in sugarcane (Saccharum SPP L.) using different concentration of 2, 4-D and RAPD analysis of plants regenerates

Author(s):  
Misbah Naz ◽  
Ghulam Sughar ◽  
Imtaiz Ahmed ◽  
Neghat Seema ◽  
Ghulam Shah Nizamani ◽  
...  

Present research was conduct to build up an efficient protocol for various concentrations of 2, 4-D for ”Callus formation and somatic embryogenesis in sugarcane (saccharin spp L.) Using various concentrations of 2, 4-D and RAPD analysis of regenerated plants in the Laboratory of Biotechnology Nuclear Institute of Agriculture Tandojam during the year 2013- 2014. Three sugarcane varieties Bl4, NIA-2010, NIA-2011 with various concentrations of 2, 4-D (0.5.1.0, 2.0, 3.0 and 4.0 mg l-1). While 3.0 mg l-1 Kin+IAA+IBA were used for callus proliferation and shoot formations. Four different concentration of IBA were used for rooting purpose 0.5, 1.0, 2.0 and 3.0 mgl-1+20 g Sugar. Embryonic callus was obtained by culturing young apical merited. Eight-month field grown three sugarcane clones via; BL4, NIA-2010 and NIA-2 011 we use for tissue culture somatic embryonic callus studies. The apical meristematic region was used for callus formation and somatic embryogenesis induction on 0.5, 1.0, 2.0, 3.0 and 4.0 mg l-1.2, 4-D actively growing callus was subcultured on kin.IAA, IBA, 3.0 mg l-1. Maximum callus proliferation and a number of plantlets shoot length and regeneration growth was observed in those plants that call taken from 1.0 and 2.0 mg l-1.2, 4-D Maximum chlorophyll mutation frequency was recorded in NIA-2010 and BL4 grown on 1.0 mg l-1 2, 4-D. The maximum number of roots was observed in BL4 when 1.0 mg l-1IBA+ 20% sugar was applied, variability obtained through callus culture and also confirmed through random amplified polymorphic DNA (RAPD) techniques.

HortScience ◽  
1995 ◽  
Vol 30 (5) ◽  
pp. 1078-1079 ◽  
Author(s):  
Isabel Arrillaga ◽  
Victoria Lerma ◽  
Pedro Pérez-Bermúdez ◽  
Juan Segura

The effects of stage of microspore development, cold pretreatment, and growth regulators on the embryogenic response of anthers from service tree (Sorbus domestica L.) are reported. Callus proliferation required the presence of growth regulators in the culture medium, best results being obtained with combinations of auxins and BA. Microspore embryogenesis was only induced when anthers containing tetrads or uninucleate pollen were cultured on BA-supplemented media containing IBA or IAA. A cold pretreatment before anther culture elicited a significant decrease in callus formation and inhibited embryogenesis. Chemical names used: benzyladenine (BA), indole-3-butyric acid (IBA), indole-3-acetic acid (IAA).


Author(s):  
Valentina Di Pauli ◽  
Paola Daniela Fontana ◽  
Dalia Marcela Lewi ◽  
Arturo Felipe ◽  
Luis Ernesto Erazzú

Abstract Background Biotechnological breeding of elite sugarcane cultivars is currently limited because of the difficulty of regenerating plants by tissue culture. Here, we report that commercially elite sugarcane genotypes, which are adapted to Argentinian agro-ecological conditions, are capable of being regenerated via indirect somatic embryogenesis. Leaf rolls of five elite genotypes were cultured following two callus induction protocols using different concentrations of 2,4-D as the growth regulator. Embryogenic calluses were regenerated under light conditions. Regenerated plants were subsequently acclimatized in the greenhouse under two acclimatization procedures before being transplanted to the field. Results Four of the five genotypes were able to form somatic embryos following the two induction protocols. The variables related to embryogenic callus production were influenced by the interaction between genotype and culture conditions. For plant regeneration, the embryogenic calluses were further cultured on an IBA-supplemented medium, where we observed a high genotype dependence. Calluses from the four cultivars regenerated a good number of plants. With the procedures described here, we obtained more than 90% of well-acclimatized plants both in the greenhouse and in the field. Conclusions This protocol provides a simple way to regenerate sugarcane plants through indirect somatic embryogenesis. Also, the results confirm that tissue culture ability is highly genotype-dependent in sugarcane. Our findings suggest that these elite cultivars could be good candidates for biotechnological breeding.


2019 ◽  
Vol 7 (1) ◽  
pp. 12 ◽  
Author(s):  
O-Chul Kwon ◽  
Chang-Soo Lee ◽  
Young-Jin Park

In this study we identified single nucleotide polymorphism (SNP) and sequence characteristic amplification region (SCAR) markers for specific identification of antler-shaped Ganoderma lucidum strains. When the partial mitochondrial SSU rDNA gene sequence of various antler- and kidney-shaped G. lucidum strains were analyzed and aligned, an SNP was found only in the antler-shaped G. lucidum strain at position 456 bp. In addition, this SNP of antler-shaped strains was digested by HinfI restriction enzyme. We further analyzed the polymorphism of various G. lucidum strains by random amplified polymorphic DNA (RAPD) analysis. In RAPD analysis, we isolated and sequenced a fragment, specific for antler-shaped G. lucidum strains. Based on this specific fragment sequence, two sets of specific primer pairs for antler-shaped G. lucidum strains were designed. PCR analysis revealed that two specific bands were observed only from antler-shaped strains. These two molecular markers will be helpful for identification of morphological characteristics of G. lucidum.


2000 ◽  
Vol 119 (5) ◽  
pp. 443-445 ◽  
Author(s):  
L. de Benedetti ◽  
G. Burchi ◽  
A. Mercuri ◽  
N. Pecchioni ◽  
P. Faccioli ◽  
...  

Plant Disease ◽  
1999 ◽  
Vol 83 (2) ◽  
pp. 108-113 ◽  
Author(s):  
Craig M. Sandlin ◽  
James R. Steadman ◽  
Carlos M. Araya ◽  
Dermot P. Coyne

Five isolates of the bean rust fungus Uromyces appendiculatus were shown to be specifically virulent on bean genotypes of Andean origin. This specificity was demonstrated by the virulence of five pairs of isolates on a differential set of 30 Phaseolus vulgaris landraces. Each isolate pair was from a different country in the Americas and consisted of one Andean-specific isolate and one nonspecific isolate. Of the differential P. vulgaris landraces, 15 were of Middle American origin and 15 were of Andean origin. The Andean-specific rust isolates were highly virulent on Andean landraces but not on landraces of Middle American origin. Rust isolates with virulence to Middle American landraces were also generally virulent on Andean material; no truly Middle American-specific isolates were found. Random amplified polymorphic DNA (RAPD) analysis of the rust isolates also distinguished the two groups. Four of the Andean-specific rust isolates formed a distinct group compared to four of the nonspecific isolates. Two of the isolates, one from each of the two virulence groups, had intermediate RAPD banding patterns, suggesting that plasmagomy but not karyogamy occurred between isolates of the two groups.


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