فهرس المقالات Genetic advance

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  1 - Genetic variability of agronomic traits and biodiversity in the genus <i>Ocimum</i>
  Rajendra P. Patel Rakshapal Singh Raj Kishori Lal Pankhuri Gupta Anju Kesarwani Nitu Goyal
  The present study was performed to explore genetic and chemotypic variability among five Ocimum species. Genotypes were evaluated from pooled data over three locations for two consecutive years (2007-2009). High genotypic coefficient variation and phenotypic coefficient أکثر

  The present study was performed to explore genetic and chemotypic variability among five Ocimum species. Genotypes were evaluated from pooled data over three locations for two consecutive years (2007-2009). High genotypic coefficient variation and phenotypic coefficient variation was observed for leaf area (63.55 and 63.80, respectevely), essential oil yield (40.37 and 41.0, respectevely) and leaf width (33.91 and 39.29, respectevely). Maximum heritability estimate in broad sence was observed for leaf area (99.20%) and leaf length (98.79%) and essential oil (98.36%). High genetic advance over mean was observed for the essential oil yield (80.59%), leaf width (74.43%), leaf length (69%) and essential oil content (64.71%). In addition, path coefficient analysis showed maximum positive direct effects of plant canopy (4.21), leaf width (3.8), followed by essential oil (2.49%) and fresh herb yield (0.95). The essential oils of Ocimum species were grouped in four chemical groups of compounds. The accessions of O. tenuiflorum, O. basilicum and O. gratissimum were found to be rich with phenylpropanoids.The results clearly showed variation in important economic traits can facilitate selection for further improvement inOcimum genotypes. تفاصيل المقالة
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  2 - Quantification of β-carotene, aucubin content, their associations and contribution to other economic traits in <i>Plantago</i> germplasm
  Sougata Sarkar Raj Kishori Lal Ram Kishor Verma
  Plant secondary metabolites have innumerable benefits in regard to human health. From the available 106 divergent lines of five Plantago species, a screening program was conducted to explore putative lines having best resources of aucubin and &beta;-carotene. HPLC resul أکثر

  Plant secondary metabolites have innumerable benefits in regard to human health. From the available 106 divergent lines of five Plantago species, a screening program was conducted to explore putative lines having best resources of aucubin and &beta;-carotene. HPLC results indicated that seeds of selection LP3 of P. ovata contained highest (9.53%) and P. arenaria contained least (7.79%) &beta;-carotene. Investigation was also conducted to assess the genetic variability, correlations and character contribution of &beta;-carotene and aucubin content with other traits towards seed yield in a set of ten selected accessions in relation to seven traits in Plantago species. Results indicated that none of the accessions of any other species apart from P. lanceolata contained aucubin. PL-61 accession was detected to have maximum concentration (0.23%) of aucubin while the lowest (0.02%) was detected in PL-66. This opened the possibilities for nutritional value addition of &beta;-carotene in seeds of isabgol. تفاصيل المقالة
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  3 - Prediction of genetic variability and character contribution using path analysis in <i>Curcuma longa</i> L. germplasm
  Renu Yadav R.K. Lal C.S. Chanotiya Karuna Shanker Pankhuri Gupta Shama Shukla
  Seventeen genetic stocks of Curcuma longa L. were evaluated for nature and amount of genetic variability, associations, and path analysis for six economic traits. GCV and PCV were largest for fresh rhizome yield, Para-cymene-8-ol and 1, 8 cineole. Path coefficient study أکثر

  Seventeen genetic stocks of Curcuma longa L. were evaluated for nature and amount of genetic variability, associations, and path analysis for six economic traits. GCV and PCV were largest for fresh rhizome yield, Para-cymene-8-ol and 1, 8 cineole. Path coefficient study showed the largest direct contribution to rhizome yield was plant height while other traits were negative; but their direct contribution via oil content in leaf and rhizome was large. All traits expressed medium to high heritability (^h2(BS), low to medium genetic advance and positive correlations. Correlation coefficients between traits expressed that rhizome oil content, 1, 8 cineole were highly significant and positively correlated with plant height and 1, 8 cineole at genotypic and phenotypic level, respectively. Based on mean performance AMT3, Tur1UNK, ST-3(3) were best for leaf oil, rhizome oil and fresh rhizome yield. These accessions may be exploited for commercial production/exploitation. تفاصيل المقالة
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  4 - Genetic variability and character association among morpho-metric traits and essential oil constituents in eight half-sib seed progenies of peppermint (<i>Mentha piperita</i> L.)
  Priyanka Prasad Ram Kishor Akancha Gupta Vidhi Saxena Sameen Zaidi Himanshu Kushwaha Vagmi Singh Ram Swaroop Verma B. Kumar
  Menthol rich with low menthofuran peppermint (Mentha piperita L.) genotype MPK-5 and their eight half-sib seed progenies were evaluated for different genetic parameters, namely coefficient of variation, genetic advance, heritability, associations, and path analysis for أکثر

  Menthol rich with low menthofuran peppermint (Mentha piperita L.) genotype MPK-5 and their eight half-sib seed progenies were evaluated for different genetic parameters, namely coefficient of variation, genetic advance, heritability, associations, and path analysis for different economic characters, viz., plant height, leaf length, leaf width, leaf: stem ratio, herb yield, essential oil content (%), and contents of various essential oil constituents (quality traits) such as sabinene, myrcene, limonene, &alpha;-pinene, &beta;-pinene, 1,8-cineole, menthone, menthofuran, neo-menthol, isomenthone, menthyl acetate, menthol, and pulegone. The phenotypic coefficient of variations (PCV) was found slightly higher than the genotypic coefficient of variations (GCV) for the characters studied, indicating that the apparent variation was not only due to genetic but also influenced by the growing environment for the expression of studied traits. The highest genotypic coefficients of variation (GCV) was noted for the character pulegone, followed by menthofuran and 1,8-cineole. High heritability coupled with high genetic advance was observed for menthol followed by pulegone demonstrating that these chemical compositions might be under non-additive genetic control. The genotypic correlations were higher than the phenotypic correlations for studied traits. The significant and positive associations of &beta;-pinene with sabinene and 1,8-cineole; &alpha;-pinene with &beta;-pinene, sabinene, and 1,8-cineole; menthyl acetate with neo-menthol; and sabinene with 1,8-cineole were noted. A high direct positive effect was also recorded between menthofuran and limonene. تفاصيل المقالة