Yogeshwar Mishra , Fatima Shirin

Abstract

In-vitro axillary bud proliferation has been achieved in nodal segment explants from the side branches of 15-18 years old trees of Gmelina arborea on MS medium +10 μM BA. MS medium containing 1.0 μM BA and 0.1 μM Kn induced maximum shoot multiplication. The addition of 23 μM AgNO₃ in the culture facilitated callus free shoot formation. Rooting was achieved on ½ MS medium enriched with 10.0 μM IBA and ischolar_mained plantlets were successfully acclimatized in high humidity conditions (80-90% RH) for two weeks prior to successful transfer to a shadehouse. The eight months old potted plants were showing excellent growth and development.

Keywords

Gmelina aroborea, Mature Trees, Clonal Propagation, In-vitro Technique

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Yogeshwar Mishra , Gufran Usmani , Pravin H. Chawhaan , A. K. Mandal

Abstract

The study explores the scope of clonal propagation of Tinospora cordifolia Willd. Miers ex Hook. F. & Thorns. (Guduchi) by vine cutting. Mature cuttings were collected and treated with different concentrations of hormones viz. 100 ppm, 200 ppm and 300 ppm of IBA (Indole-3-Butyric Acid), NAA (Napthalene-6-Acetic Acid) and IAA (Indole-3-Acetic Acid). Sprouting and ischolar_maining capacity of the cuttings were assessed in open environment. Sampling was done after three months of planting. Data reveled that IBA significantly increased sprouting, ischolar_maining and ischolar_main length as compared to control and other auxins. Among different concentrations applied lOOppm IBA significantly enhanced the ischolar_maining ability of T. cordifolia cuttings. Further, IBA (lOOppm) treated cutlings were found to be best for maximum plant length (364.73 cm) and number of branches (3.42) after six months of transfer of the plants in the field.

Keywords

Clonal Propagation, Tinospora cordifolia, Indole-3-Butyric Acid, Napthalene-6-Acetic Acid, Indole-3-Acetic Acid

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Naseer Mohammad , Yogeshwar Mishra , S. A. Ansari

Abstract

In the present study, attempts were made to find out the parameters for selection of superior trees of Pterocarpus marsupium. The studies associated with correlation and path analysis, indicated clearly that clear bole height, girth at breast height and total plant height were the most important parameters which could be considered for selection of superior plants of this species. In fact, it would be appropriate if these parameters are incorporated in developing strategy for selection and genetic improvement of the species.

Keywords

Pterocarpus marsupium, Character Correlation, Path Coefficient Analysis

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Yogeshwar Mishra ¹, P. K. Rana ¹, M. K. Sonkar ¹, S. A. Ansari ²

Affiliations
1 Tropical Forest Research Institute, P.O-R.F.R.C, Mandla Road, Jabalpur 482021 (M.P), IN
2 Institute of Forest Productivity, Ranchi (Jharkhand), IN

Abstract

The experiment was laid out for assessing the performance of three micpropagated bamboo species, viz, Bambusa nutans, Bambusa tulda and Dendrocalamus asper in a complete randomised block design with three treatments, viz., control, VAM, NPK and five replicates. During two years of field trial, the survival rate was recorded to be 100% without any insect and pathogen attack. A significant variation in diameter was noticed in three bamboo species after 6 months of trial only. The species showed significant variations in culm height only at 24 months after planting, which was in the order: Bambusa nutans > Dendrocalamus asper > Bambusa tulda. The application of NPK significantly influenced culm number. Thus, culm height appears to be under genetic control, i.e. species specific and culm diameter and number under environmental control, i.e. amenable to fertilizer application.

Keywords

Culm Diameter, Culm Height, Culm Number, Fertilizer, VAM.

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Gufran Usmani ¹, Syed Naseer Shah ², Pravin H. Chawhaan ³, Yogeshwar Mishra ², Asim Kumar Mandal ²

Affiliations
1 Department of Plant Breeding and Genetics, College of Agriculture, Rewa, M.P., IN
2 Tropical Forest Research Institute, Jabalpur, M.P., IN
3 Arid Forest Research Institute, New Pali Road, Jodhpur Rajasthan, 342 005, IN

Abstract

Variability, heritability and character association were studied in 15 populations of Tinospora cordifolia. Highest and lowest genotypic coefficient of variability was observed for shoot length and stem diameter, respectively. Total stem biomass per meter which had high estimates of heritability also had high genetic advance. Significant positive correlation at genotypic level was found between leaf area and shoot fresh weight and ischolar_main fresh weight.

Keywords

Variability, Character Association, Genetic Advance, Biomass, Heritability.

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Gufran Usmani ¹, Syed Naseer Shah ², Pravin H. Chawhaan ², Yogeshwar Mishra ², Asim Kumar Mandal ²

Affiliations
1 College of Agriculture (JNKVV), Rewa, 486001, M.P., IN
2 Tropical Forest Research Institute, P.O.- R.F.R.C, Jabalpur, Madhya Pradesh, IN

Abstract

Genotype x environment interaction was studied using 25 populations of Rauvolfia serpentina collected from 11 states of India. Significant G x E interaction revealed that genotypes responded differently to different environments. Genotype A14 was found to be most stable over environment, on the other hand genotype A17 was responsive to favourable environment. The study indicated power of stability analysis in identifying stable genotypes.

Keywords

Rauvolfia serpentina L., Reserpine, Stability.

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