Informatics Publishing Limited

B. N. Divakara

Abstract

Thirty-five genotypes of Tamarindus indica L. were evaluated to study variability and character association for various pulp biochemical traits as scope for further improvement. Variability studies revealed that none of the genotypes recorded maximum for more than one pulp biochemical trait. Maximum anthocyanin pigment and total tartaric acid was expressed by TI-32 (1.566 mg/100g) and TI-5 (20.60%) respectively. Total phenol and anthocyanin pigment expressed high heritability coupled with high genetic gain. Correlation studies indicated an inherent association between the characters with most of the traits having negative correlation with total tartaric acid content. Pigment anthocyanin showed negative and highly significant correlation with moisture content at genotypic level. In path coefficient analysis total sugars, total phenol, protein, ash, moisture, total soluble solids showed positive direct effect on total tartaric acid content.

Keywords

Tamarindus indica, Character Association, Pulp Biochemical Traits, Co-efficient
Of Variation, Heritability, Correlation, Path Coefficient

Full Text

     

B. N. Divakara

Abstract

Tamarindus indica L. is an open-pollinated crop, hence improvement in the crop yield depends on the progress of variability in the desired characters in the base material vis-a-vis germplasm collection. An evaluation of thirty-five genotypes of tamarind was carried out based on variability and character association in various pod traits as a scope for further productivity improvement. Variability studies for pod traits revealed that, genotype TI-9 recorded maximum for seven traits viz. pod width (5.48 cm), pod thickness (2.43 cm), pulp weight (51.33 g), vein weight (4.15 g), shell weight (17.90 g), pod weight (83.06 g), and pulp per cent (61.42). However maximum pod length was recorded by the genotype TI-22 (26.60 cm). Genotype TI-26 exhibited the lowest for six traits viz. pod length (8.31 cm), seed weight (1.91 g), vein weight (0.20 g), shell weight (2.11g), pod weight (8.46 g) and pulp weight (4.23 g). Pod traits like shell weight, pod weight, pulp weight, and vein weight exhibited higher estimates of heritability coupled with higher genetic advance. Correlation coefficient studies indicated that pulp weight per pod expressed highest positive genotypic and phenotypic association with pod weight, vein weight, shell weight, pod width and pod length. Path coefficient analysis revealed that, pod weight, pulp per cent, seed per cent and shell per cent exhibited positive direct effect on pulp weight.

Keywords

Tamarindus indica, Genotypes, Pod Traits, Variation, Heritability

Full Text

     

P. Ratha Krishnan , P. Rajendran , B. N. Divakara

Abstract

No abstract

Full Text

     

B. N. Divakara , Animesh Sinha , Ashok Alur

Abstract

Variability studies of twenty-three candidate plus trees of M. latifolia Macb. revealed significant difference among candidate plus trees for seed traits and germination capacity. CPT-5, CPT-16 and CPT-2 recorded highest for 100-seed weight (286.27 g), oil content (51.15 %) and germination capacity (84.77 %) respectively. The phenotypic and genotypic coefficients of variations were close to each other for all traits except germination capacity. Germination capacity exhibited positive significant correlation with 100-seed weight both at genotypic (r = 0.762) and phenotypic (r = 0.548) level and 100- seed weight expressed positive significant correlation with oil content both at genotypic (r = 0.604) and phenotypic (r = 0.573) level. In conclusion, oil content and 100-seed weight are under strong genetic control hence improvement in these characters can bring improvement in germination capacity.

Keywords

Madhuca latifolia, Genetic Variability, Correlation Seed Traits

Full Text

     

B. N. Divakara , Santosh Prasad , Rameshwar Das

Abstract

The survey was undertaken to document the alien invasive flora present in different ecosystems during November 2010 to February 2011 in Latehar and Hazaribagh districts of Jharkhand. A total of 41 invasive alien species was documented in the selected forests and non-forest areas. Among invasive alien species, major potential threat in the near future is by Lantana camara, Argemone mexicana, Eupatorium odoratum and Hyptis suaveolens. Lantana camara was highest in open forest with density of 2917/ha and frequency 47.62 % compared to dense forest with density of 42.5/ha and frequency 50 % in Latehar forest. Whereas in Hazaribagh forests the density of Lantana camara was higher than Latehar forests with 3535/ha in open forest and 177/ha in dense forest. In Agricultural land Celosia argentea, Argemone mexicana, Cassia tora, Eclipta prostrata, Emilia sonchifolia, Evolvulus nummularious, Oxalis corniculata, Portulaca oleracea, Scoparia dulcis, Sonchus oleraceous, and Tridax procumbens are found thorugh out Hazaribagh and Latehar districts. Eichornia cressipeswas major invasive species found in pond ecosystem.

Keywords

Alien invasive species, Documentation, Hazaribagh, Latehar

Full Text

     

B. N. Divakara ¹, Rameshwar Das ²

Affiliations
1 Institute of Wood Science and Technology, Icfre, Bangalore - 560003, Karnataka, IN
2 Institute of forest Productivity, Icfre, Ranchi - 835303, Jharkhand,, IN

Abstract

Twenty-four Pongamia pinnata(Karanj) and twenty-three Madhuca latifolia (Mahua) genotypes collected from 2 different zones of Jharkhand were subjected to Mahalanobis D-square (D ) statistics to elucidate the genetic diversity based on pod/seed traits. P. pinnata and M. latifolia genotypes were grouped into 5 and 8 clusters respectively, indicating wide diversity. The clustering pattern proved that geographical diversity need not necessarily be related to genetic diversity. In P. pinnata, cluster-II had maximum number of genotypes followed by cluster-I and cluster III. Cluster means indicated a wide range of variation for all the pod/seed traits. In M. latifolia the genotypes in cluster VII and IV were most heterogeneous and can be best used for within group hybridization. Cluster means indicated crosses involving under cluster III and I may result in substantial segregates and further selection for overall improvement of species.

Keywords

Pongamia Pinnata, Madhuca Latifolia, Mahalanobis D-square, Genetic Divergence.

Full Text

     

B. N. Divakara ¹, Santosh Prasad ²

Affiliations
1 Institute of Wood Science and Technology, Indian Council of Forestry Research and Education, Bangalore, IN
2 Institute of Forest Productivity, ICFRE, Ranchi, Jharkhand, IN

Abstract

During the process of investigation and documentation on invasive alien flora available in Latehar and Hazaribagh districts, some of the interesting facts on potential medicinal uses were closely noted based on experimented and proven evidences by interrogation with the ethnic people especially tribes like Munda and Birhore. In this paper the most commonly used invasive alien medicinal species viz. Ageratum conyzoides, Argemone mexicana, Calotropis procera, Cassia alata, Cassia tora, Cuscuta reflexa, Datura metel, Eclipta prostrata, Emilia sonchifolia, Eupatorium odoratum, Hyptis suaveolens, Leonotis nepataefolia, Opuntia stricta, Scoparia dulcis, Sida acuta, Solanum torvum, and Tridax procumbens possessing different medicinal properties like expectorant, styptic and antibiotic, antifungal, antispasmodic, anodyne, febrifuge, refrigerant and enteritis are discussed.

Keywords

Alien, Ethnomedicine, Hazaribagh, Latehar.

Full Text