scholarly journals In vitro direct shoot regeneration from proximal, middle and distal segment of Coleus forskohlii leaf explants

2010 ◽  
Vol 16 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Gaurav Krishna ◽  
P. Sairam Reddy ◽  
N. Anoop Nair ◽  
P. W. Ramteke ◽  
P. S. Bhattacharya
Keyword(s):  
Shoot Regeneration ◽  
Leaf Explants ◽  
Distal Segment ◽  
Coleus Forskohlii ◽  
Direct Shoot Regeneration ◽  
Direct Shoot

scholarly journals High frequency direct shoot regeneration from Kazakh commercial potato cultivars

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9447
Author(s):  
Laura S. Abeuova ◽  
Balnur R. Kali ◽  
Aizhan O. Rakhimzhanova ◽  
Sara S. Bekkuzhina ◽  
Shuga A. Manabayeva
Keyword(s):  
Shoot Regeneration ◽  
Leaf Explants ◽  
Multiple Shoot ◽  
Potato Cultivars ◽  
Direct Regeneration ◽  
Naphthaleneacetic Acid ◽  
Direct Shoot Regeneration ◽  
Potato Genome ◽  
Direct Shoot

Potato (Solanum tuberosum L.) is the third most economically important crop in the world and has a high nutritional value. In this study, the in vitro culture response of four widely grown in Kazakhstan potato cultivars, Astanalyk, Monument Kunaev, Tokhtar, and Aksor, was investigated using stem and leaf explants. Published protocols were evaluated and optimized to develop a more efficient protocol for the regeneration of plants from local potato cultivars in tissue culture, which is a prerequisite to facilitate potato genome modification. The explants were cultured on solid Murashige and Skoog medium supplemented with different concentrations and combinations of zeatin, 6-benzylaminopurine (BAP), gibberellic acid (GA3), 1-naphthaleneacetic acid (NAA) and indole-3-acetic acid (IAA). The maximum regeneration was induced from the stem internodal explants. A significant effect of the explant source on direct regeneration was confirmed with statistical analysis. The number of shoots obtained from the internode was 10.0 from cv. Aksor followed by cvs. Tokhtar and Astanalyk. The medium DRM-VIII with 1 mg/l zeatin, 0.1 mg/l IAA and 7.0 mg/l GA3 was considered the best for direct shoot regeneration and multiple shoot formation from all cultivars. To conclude, we outline a protocol for direct plant regeneration from four potato cultivars. Our findings suggest commercial cultivars Astanalyk and Aksor are good candidates for developing the genome-edited plants through direct shoot regeneration.

scholarly journals In vitro propagation of black cumin (Nıgella satıva L.) plants

Genetika ◽  
2021 ◽  
Vol 53 (1) ◽  
pp. 295-303
Author(s):  
Hüseyin Uysal
Keyword(s):  
Success Rate ◽  
Shoot Regeneration ◽  
Callus Formation ◽  
Leaf Explants ◽  
Shoot Formation ◽  
Stem Explants ◽  
Direct Shoot Regeneration ◽  
Black Cumin ◽  
Direct Shoot

This study was carried out to determine in vitro development using Black cumin leaf and stem explants. ?ameli black cumin variety was used as plant material. Five different nutrient mediums (1. LS2.5, 2. MS, 3. MS + 0.5 mg.l-1 IAA, 4. MS + 0.5 mg.l-1 BAP, 5. MS + 0.5 mg.l-1 IAA + 0.5 mg.l-1 BAP) containing 30 g sugar were used in this study. As a result of the research, 100% callus formation was detected in the stem explants cultured in the number 1 and number 5 mediums. These were followed by stem explants cultured in medium 4 with a success rate of 96%. Of this rate, 66% was shoot formation, and 30% was callus formation. Direct shoot regeneration was performed only on stem explants cultured in mediums 4 and 3, with a 66% success rate in medium four and a 36% success rate in medium 3. The highest plant regenerations from calluses were gained from stem explants (273.3%) in medium 4, followed by calluses gained from leaf explants (262.5%) in the same medium. These were followed by cultures in medium 3, with calluses derived from stem explants (255%) and leaf explants (150%). No plant regeneration was determined from calluses gained in the medium 1. Thus it is evident that high auxin content and auxin-cytokinin balanced mediums encouraged callus formation in the black cumin plants. The addition of only IAA or BAP to the medium promoted shoot formation in the stem explants, but direct shoot regeneration was not thereby achieved from the leaf explants. These results show that, for in vitro clonal propagation studies done on black cumin plants, a high auxin containing medium is preferable if the aim is callus formation. If the aim is direct shoot regeneration, BAP or other cytokinin-containing medium is preferred.

Direct shoot regeneration from leaf explants of Rosa damascena Mill.

2004 ◽  
Vol 40 (2) ◽  
pp. 192-195 ◽  
Author(s):  
Pratap Kumar Pati ◽  
Madhu Sharma ◽  
Anil Sood ◽  
P. S. Ahuja
Keyword(s):  
Shoot Regeneration ◽  
Leaf Explants ◽  
Rosa Damascena ◽  
Direct Shoot Regeneration ◽  
Direct Shoot

scholarly journals Improvement of micropropagation protocol of Phalaenopsis sp. for the method of direct shoot regeneration from nodes of floral spikes

2012 ◽  
pp. 141-150
Author(s):  
Marija Markovic ◽  
Milos Tanasic ◽  
Nevena Stojic ◽  
Radivoje Bulatovic ◽  
Marta Jovic ◽  
...  
Keyword(s):  
Shoot Regeneration ◽  
Coconut Water ◽  
Soy Flour ◽  
Multiplication Rate ◽  
Direct Shoot Regeneration ◽  
Medium Components ◽  
Cultivation In Vitro ◽  
Direct Shoot

This paper succesfully investigated the possibility of modification of the micropropagation protocol of Phalaenopsis sp. with an aim to simplify the procedure and reduce the costs. The obtained results show that some medium components can be succesfully omitted (coconut water, glutamine, 2-morpholinoethanesulfonic acid) and some of them (peptone) can be replaced with a cheaper constituent (soy flour) while preserving the quality of the obtained microplants. The multiplication rate was 7,6 shoots per explant after the period of 150 days of cultivation in vitro. On the same medium 60% of explants were rooted and roots were mostly well developed.

scholarly journals Direct Shoot Organogenesis of Medicago sativa

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 628f-628
Author(s):  
Guochen Yang ◽  
Marihelen Kamp-Glass
Keyword(s):  
Genetic Transformation ◽  
Shoot Regeneration ◽  
Shoot Organogenesis ◽  
Multiple Shoots ◽  
Direct Shoot Regeneration ◽  
Callus Initiation ◽  
Direct Shoot Organogenesis ◽  
Direct Shoot ◽  
In Vitro Shoot Regeneration

An efficient and reliable protocol of in vitro shoot regeneration must be first established to have a successful genetic transformation. As a member of legume family, alfalfa is very difficult for direct shoot regeneration. There is no published information on direct shoot organogenesis, although success has been well documented on embryogenesis, which must go through callus stage. Different plant growth regulators at various concentrations were evaluated for callus initiation, development, and direct shoot regeneration. Multiple shoots were produced directly from each individual explant. This will provide an efficient means for production of transgenic alfalfa plants. Therefore, genetic transformation of Medicago germplasm will be significantly expedited.

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