@article {881, title = {Altitude and Seed Phenotypic Effect on Amygdalin Content in Apricot (Prunus armeniaca L.) Kernel}, journal = {Pharmacognosy Journal}, year = {2019}, pages = {xx-xx}, type = {Original Article}, chapter = {xx}, abstract = {

Objective: Genetic component influencing amygdalin content in apricot kernel is well documented. This study aims to evaluate influence of altitude and seed phenotypic characters on amygdalin content in apricot kernel. Methods: Fruits from 126 genotypes differing in kernel taste and seed coat colour were collected from seven locations from 3008-3346 m asl in trans-Himalaya. Amygdalin content in kernel was determined. Results: Amygdalin content in bitter kernel was significan tly higher (44.6{\textpm}9.0 mg.g-1) than that of sweet kernel (3.1{\textpm}1.8 mg.g-1) with brown seed coat. The geographical elevation had no influence on kernel amygdalin content. Similarly, seed and kernel physical characters, except seed coat color, had no significant effect on kernel amygdalin content. High variability within genotypes was observed suggesting that genotype played significant role on amygdalin content in apricot kernel. Low amygdalin content (2.4{\textpm}1.2 mg.g-1) in apricot kernel with white seed coat phenotype confirmed our earlier finding that the white phenotypic marker is associated with sweet kernel. Conclusion: The geographical elevation had no influence on kernel amygdalin content. White seed coat phenotype can be taken as a marker for low amygdalin content in future studies.

}, keywords = {Bitterness, Cyanide, Elevation, Ladakh, Seed Coat, Sweetness}, doi = {10.5530/pj.2019.11.xx}, author = {Avilekh Naryal and Pushpender Bhardwaj and Anil Kant and OP Chaurasia and Tsering Stobdan} } @article {582, title = {High Efficiency in vitro Plant Regeneration and Secondary Metabolite Quantification from Leaf Explants of Rhodiola imbricata}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {470-475}, type = {Original Article}, chapter = {470}, abstract = {

Aim: Rhodiola imbricata is an endangered medicinal plant of the trans-Himalayan Leh-Ladakh region belonging to the family Crassulaceae. An efficient propagation and regeneration system via direct shoot organogenesis from leaf explant and evaluation of cinnamyl alcohol (Secondary metabolite) was established in this study. Material and Methods: In vitro grown leaves were inoculated using Murashige and Skoog (MS) medium supplemented with (alpha)- naphtalene acetic acid (NAA) in combination with 6- benzyladenine (BAP) for callus proliferation and regeneration. Results: The highest percentage of rhizogenous callus was induced in medium containing NAA (10.0-15.0 M). The highest percentage of shoot formation from leaf derived callus was obtained in the medium containing of NAA (5.0 M) and BAP (2.5 M) as well as in NAA (1.0 \μM), BAP (5.0 M) (38.88\% and 37.49\%) respectively. Rooting of regenerated shoots were effective when a lower concentration of NAA (0.5 M) was used alone. A maximum number of roots (22.0) and higher length (0.6 cm) was observed. The in-vitro plantlets with well-developed shoots and roots were acclimatized successfully to natural field conditions with a survival rate of over 80\%. Cinnamyl alcohol (Secondary metabolite) evaluation was also done for the very first time and an upregulation of 49.6\% and 30.6\% were observed in in-vitro roots and shoots when compared with mother root and shoot respectively. Hence, it was proved that the content of secondary metabolites obtained from in-vitro raised plants is higher than mother plant. Conclusion: These results may lay a foundation for genetic improvement and can be used to determine sequential level of targeted secondary metabolites through cell culture in Rhodiola imbricata.

}, keywords = {Acclimatization, Cinnamyl alcohol, Endangered, Plant growth regulator, Regeneration system}, doi = {10.5530/pj.2018.3.77}, url = {http://fulltxt.org/article/510}, author = {Ashwani Kumar Bhardwaj and Avilekh Naryal and Pushpender Bhardwaj and Ashish Rambhau Warghat and Balpreet Arora and Shikha Dhiman and Shweta Saxena and Pratap Kumar Pati and Om Prakash Chaurasia} } @article {549, title = {High Efficiency in vitro Plant Regeneration and Secondary Metabolite Quantification from Leaf Explants of Rhodiola imbricata}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {x}, pages = {x}, type = {x}, chapter = {XX}, abstract = {

Aim: Rhodiola imbricata is an endangered medicinal plant of the trans-Himalayan Leh-Ladakh region belonging to the family Crassulaceae. An efficient propagation and regeneration system via direct shoot organogenesis from leaf explant and evaluation of cinnamyl alcohol (Secondary metabolite) was established in this study. Material and Methods: In vitro grown leaves were inoculated using Murashige and Skoog (MS) medium supplemented with (alpha)- naphtalene acetic acid (NAA) in combination with 6- benzyladenine (BAP) for callus proliferation and regeneration. Results: The highest percentage of rhizogenous callus was induced in medium containing NAA (10.0-15.0 M). The highest percentage of shoot formation from leaf derived callus was obtained in the medium containing of NAA (5.0 M) and BAP (2.5 M) as well as in NAA (1.0 M), BAP (5.0 M) (38.88\% and 37.49\%) respectively. Rooting of regenerated shoots were effective when a lower concentration of NAA (0.5 M) was used alone. A maximum number of roots (22.0) and higher length (0.6 cm) was observed. The in-vitro plantlets with well-developed shoots and roots were acclimatized successfully to natural field conditions with a survival rate of over 80\%. Cinnamyl alcohol (Secondary metabolite) evaluation was also done for the very first time and an upregulation of 49.6\% and 30.6\% were observed in in-vitro roots and shoots when compared with mother root and shoot respectively. Hence, it was proved that the content of secondary metabolites obtained from in-vitro raised plants is higher than mother plant. Conclusion: These results may lay a foundation for genetic improvement and can be used to determine sequential level of targeted secondary metabolites through cell culture in Rhodiola imbricata.

Key words: Regeneration system, Acclimatization, Endangered, Plant growth regulator, Cinnamyl alcohol.

}, keywords = {Acclimatization, Cinnamyl alcohol., Endangered, Plant growth regulator, Regeneration system}, doi = {10.5530/jppcm.2018.2s.xx}, author = {Ashwani Kumar Bhardwaj and Avilekh Naryal and Pushpender Bhardwaj and Ashish Rambhau Warghat and Balpreet Arora and Shikha Dhiman and Shweta Saxena and Pratap Kumar Pati and Om Prakash Chaurasia} }