scholarly journals In vitro regeneration through callus in pointed gourd (Trichosanthes dioica Roxb.)

1970 ◽  
Vol 35 (3) ◽  
pp. 465-473 ◽  
Author(s):  
MA Malek ◽  
MA Mannan ◽  
D Khanam ◽  
MH Molla ◽  
M Khatun

An efficient protocol was developed for in vitro plant regeneration and multiplication through callus culture in pointed gourd. Among the explants, highest percentage of cotyledon explants (92.00%) produced callus when this explant cultured in MS medium supplemented with NAA (0.1, 0.5, 1.0, 1.5, and 2.0 mg/l) and 2, 4-D (0.1, 0.5, 1.0, 1.5, and 2.0 mg/l). The highest number of shoots per explant was observed in MS + 0.5 mg/l BAP + 0.5 mg/l NAA followed by 1.0 mg/l BAP + 0.5 mg/l NAA when inter-node derived callus cultured in MS medium. Among the explants derived calli from leaf, inter-node and cotyledon in in vitro regeneration study, inter-node appeared as the most suitable explant for callusing and plant regeneration. The best response towards root induction was achieved on half MS medium supplemented with 0.5 mg/l NAA. The regenerated plantlets were successfully established in prepared earthen soil pot. Keywords: In vitro regeneration; pointed gourd. DOI: 10.3329/bjar.v35i3.6453Bangladesh J. Agril. Res. 35(3) : 465-473

1970 ◽  
Vol 35 (1) ◽  
pp. 135-142 ◽  
Author(s):  
MA Malek ◽  
D Khanam ◽  
M Khatun ◽  
MH Molla ◽  
MA Mannan

An experiment was conducted to study the in vitro culture of pointed gourd. Cotyledon rescued from physiologically matured seeds (PMS) and immatured seeds (IMS) of pointed gourd were used as explants. Cotyledon excised from PMS responded very well in all culture conditions. Plant regenerated from cotyledon of PMS ranged from 38 to 96% in different hormonal formulations of culture media. Highest percentage of shoot regeneration was observed in MS + 1.0 mg/l BAP and lowest in MS + 2.5 mg/l BAP. No plant regeneration was observed in cotyledon from immatured seeds. The highest percentage of root induction (99%) was achieved in half MS medium supplemented with 0.5 mg/l NAA. The regenerated plantlets were successfully established in earthen pot. Keywords: Cotyledon; in vitro; pointed gourd. DOI: 10.3329/bjar.v35i1.5874Bangladesh J. Agril. Res. 35(1) : 135-142, March 2010


2008 ◽  
Vol 32 (3) ◽  
pp. 461-471 ◽  
Author(s):  
MA Malek ◽  
MA Bari Miah ◽  
M AL-Amin ◽  
D Khanam ◽  
M Khatun

An efficient protocol was developed for plant regeneration, multiplication and rooting under in vitro condition in pointed gourd. Highest percent of shoot regeneration was 93.86 when nodal explants were cultured on MS+2.0 mg/1 BAP. The maximum number of shoots (4.00) per explant was observed in MS + 2.0 mg/1 BAP + 0.3 mg/1 NAA from nodal segment. Among the two explants, nodal segment was found better for shoot regeneration. Female genotypes responded better than the male genotypes for shoot induction and proliferation. Lower nodal segment performed the best shoot regeneration. The best response towards root induction was achieved on half MS medium supplemented with 0.5 mg/1 NAA. The regenerated plantlets were successfully established in prepared earthen soil pot.DOI: http://dx.doi.org/10.3329/bjar.v32i3.548Bangladesh J. Agril. Res. 32(3) : 461-471, September 2007


2012 ◽  
Vol 47 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Amdadul Huq ◽  
Shahina Akter ◽  
Shahina Islam ◽  
Salim Khan

An efficient protocol was developed for plant regeneration, multiplication and rooting under in vitro condition in pointed gourd. Highest percent of shoot regeneration was 91.66%, when nodal explants were cultured on MS+1.0 mg/1 BAP. The maximum number of shoots (4.8) per explant was observed in MS + 1.0 mg/1 BAP + 0.2 mg/1 NAA from nodal segment. Among the two explants, nodal segment was found better for shoot regeneration and multiplication. The best response towards root induction was achieved on half MS medium supplemented with 0.4 mg/1 NAA. The regenerated healthy rooted plantlets were transferred to small plastic pot containing garden soil and compost in a ratio of 2:1. Immediately after transplantation the plantlets were covered with polythene bag to prevent desiccation. After acclimatization the plantlets were successfully transferred to the garden soil and the percentage of survivability in such condition was 90%.   DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11457   Bangladesh J. Sci. Ind. Res. 47(2), 217-222, 2012  


2012 ◽  
Vol 47 (2) ◽  
pp. 143-146
Author(s):  
Amdadul Huq ◽  
Shahina Akter ◽  
Shahina Islam ◽  
Salim Khan

The establishment of a micro-propagation protocol for banana (Musa sp.) cv. Sabri, was carried out using meristematic stem cuttings explant. MS medium supplemented with BAP singly or in combination with auxin, IAA and coconut water was used for this purpose. Highest percentage of shoot regeneration (90%) and maximum number of shoots (10) per explant were observed when cultured on MS + 4.0 mg/1 BAP + 2.0 mg/1 IAA + 13% (v/v) coconut water. Best response towards root induction was achieved on half MS medium supplemented with 0.5 mg/1 IBA. The regenerated healthy rooted plantlets were transferred to small plastic pot containing garden soil and compost in a ratio of 2:1. Through this method, complete micro-propagated plantlets were obtained within three months.   DOI: http://dx.doi.org/10.3329/bjsir.v47i2.11444   Bangladesh J. Sci. Ind. Res. 47(2), 143-146, 2012  


2017 ◽  
Vol 4 (2) ◽  
pp. 52-56
Author(s):  
Mallika Devi T

In the present study the protocol for callus induction and regeneration in Azima tetracantha has been developed in culture medium. The young apical leaf explants were used for callus induction on MS medium containing BAP and NAA at 1.0 and 0.4mgl-1 respectively showed maximum callus induction (73%). The amount of callus responded for shoot formation (74%) was obtained in the MS medium containing BAP (1.5 mgl-1) and NAA (0.3mgl-1).The elongated shoots were rooted on half strength medium supplemented with IBA (1.5 mgl-1) and Kn (0.4 mgl-1) for shoots rooted. Regenerated plantlets were successfully acclimatized and hardened off inside the culture and then transferred to green house with better survival rate.


2018 ◽  
Vol 53 (2) ◽  
pp. 133-138 ◽  
Author(s):  
S Khan ◽  
TA Banu ◽  
S Akter ◽  
B Goswami ◽  
M Islam ◽  
...  

An efficient in vitro regeneration system was developed for Rauvolfia serpentina L. through direct and indirect organogenesis from nodal and leaf explants. Among the different growth regulators, MS medium supplemented with 2.0 mg/l BAP, 0.5mg/l IAA and 0.02mg/l NAA found best for the multiple shoot formation from nodal segments. In this combination 98% explants produced multiple shoots and the average number of shoots per explants is 13∙4. The frequency of callus induction and multiple shoot induction from leaves was highest 88% in MS medium supplemented with 2.0 mg/l BAP, where mean number of shoots/explants was 12.5. The highest frequency of root induction (80%) and mean number of roots/plantlets (10) were obtained on half strength of MS medium containing 0.2 mg/l IBA. The rooted plantlets were transferred for hardening following acclimatization and finally were successfully established in the field.Bangladesh J. Sci. Ind. Res.53(2), 133-138, 2018


1970 ◽  
Vol 34 (4) ◽  
pp. 693-703 ◽  
Author(s):  
MA Alam ◽  
MA Haque ◽  
MR Hossain ◽  
SC Sarker ◽  
R Afroz

Anther of five varieties of Brassica species, namely BARI Shariaha-7, Tori-7, Agrani, Daulat and Safal were cultured in vitro to observe their regeneration potentiality. Different concentrations and combinations of growth regulators were supplemented in MS medium. The range of callus induction was 12.50-87.50 %. Maximum callus induction (75.00%) was observed on MS +4 mg/L 2, 4-D + 1.0 mg/L BAP. Among the genotypes, BARI Sharisha-7 showed the highest percentage of callus induction (60.42%). Among the treatments, highest percentage of shoot regeneration (75.00%) was observed on MS + 4 mg/L BAP + 1.0 mg/L NAA. BARI Sharisha-7 also showed the highest rate of plant regeneration (66.67%). Root induction was highest (75%) on half strength MS medium supplemented with 1.0 mg/L IBA and 0.5 mg/L NAA. The plantlets with sufficient roots thus obtained were transferred successfully to plastic pots and subsequently to the field. BARI Sharisha-7 and Tori-7 survived easily in the pots as well as in the field but Safal was very poor in survivability both in the pots and in the field. Key Words: Brassica; haploid; anther culture; in vitro regeneration.DOI: 10.3329/bjar.v34i4.5844Bangladesh J. Agril. Res. 34(4) : 693-703, December 2009 


1970 ◽  
Vol 8 (2) ◽  
pp. 203-206 ◽  
Author(s):  
MM Khatun ◽  
MS Hossain ◽  
MA Haque ◽  
M Khalekuzzaman

A standard protocol was established for rapid in vitro propagation of watermelon (Citrullus lanatus Thumb.) from nodal explants of field grown plant. Multiple shoot proliferation was achieved from nodal explants on MS medium supplemented with 1.0 mg/l BAP + 0.2 mg/l NAA within 30 days of inoculation. The elongation of shoots was obtained on the same medium. Highest percentage of root induction was achieved on MS medium supplement with 1.0 mg/l IBA within 25 days of culture. Well rooted plantlets were transferred to small pots and after proper acclimatization the plantlets were transplanted in the field condition, where 80% plantlets were survived and grew successfully. Keywords: In vitro regeneration; Nodal explant; Citrullus lanatus DOI: 10.3329/jbau.v8i2.7926 J. Bangladesh Agril. Univ. 8(2): 203-206, 2010  


HortScience ◽  
2016 ◽  
Vol 51 (4) ◽  
pp. 398-402 ◽  
Author(s):  
Mohammed Elsayed El-Mahrouk ◽  
Yaser Hassan Dewir ◽  
Yougasphree Naidoo

The present study reports a simple protocol for in vitro regeneration of Aglaonema ‘Valentine’ using axillary shoot explants for rapid multiplication and production of true-to-type plants. Different concentrations of benzyladenine (BA; 0, 1, 3, 5, and 7 mg·L−1), kinetin (Kin; 0, 1, 3, 5, and 7 mg·L−1), thidiazuron (TDZ; 0, 0.5, 1.0, 1.5, and 2.0 mg·L−1), naphthalene acetic acid (NAA; 0, 0.5, and 1.0 mg·L−1), and indole-3-butyric acid (IBA; 0, 0.5, and 1.0 mg·L−1) were used for shoot regeneration. The highest shoot proliferation (5.0) was obtained on Murashige and Skoog (MS) medium supplemented with 1.5 mg·L−1 TDZ and 1 mg·L−1 NAA. In vitro rooting was easily achieved with 100% at all concentrations of NAA and IBA supplemented to half- or full-strength MS medium. Regenerated plantlets were acclimatized in greenhouse with 100% survival rate. Randomly amplified polymorphic DNA (RAPD) analysis confirmed the genetic fidelity of the regenerated plantlets and mother plant.


1970 ◽  
pp. 08-12
Author(s):  
Sabina Yesmin, Mst Muslima Khatun, Tanzena Tanny ◽  
Anica Tasnim Protity ◽  
Md Salimullah ◽  
Iftekhar Alam

An in vitro regeneration protocol was developed for two high-yielding eggplant varieties (Solanum melongena L.) namely BARI begun-4 and BARI begun-6. Multiple shoots were regenerated from cotyledonary explants through organogenesis with growth regulators of different combinations and concentrations.  The best response towards multiple shoot regeneration was achieved from cotyledon explants on MS media complemented with 1 mg/l BAP + 0.2 mg/l IAA in both the two varieties of eggplant. Elongation of shoots was achieved on hormone free MS medium. Regenerated shoots of both the varieties produced   active in vitro root system on half strength of MS medium supplemented with 0.2 mg/l IBA.  The in vitro grown plantlets were acclimatized in soil, grew up to maturity, flowered, fruited and produced seeds as normal healthy plant like the control.


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