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R. Kumar , Gargi , I. Hembrom , Alpana Anupam , M. K. Singh , B. C. Prasad

Abstract

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I. Hembrom , Gargi , R. Kumar , M. K. Singh , N. B. Vijayaprakash

Abstract

Studies for seed morphology, seedling growth and biomass attributes were made in 25 provenances of Terminalia arjuna (11) and T. tomentosa (14). A wide variation was recorded for 13 seed and seedling traits in both the species. Single seed weight ranged between 1.15 to 4.52 g in T. arjuna and 0.87 to 2.76 g in T. tomentosa. Germination per cent was maximum (83.33) in T. arjuna seeds from Chakradharpur (Jharkhand). Production of fresh biomass was maximum (2.03 g) in T. tomentosa seedlings from Kharsawan (Jharkhand). Root shoot ratio an important parameter in initial establishment of seed ling was also highest (3.08:1) in seedlings of T. tomentosa from Ranka (Jharkhand).Vigour index ranged between 669.80% (T. arjuna) to 580.80 % in T. tomentosa. A positive and significant correlation was found between emergence index and germination per cent, germination speed, ischolar_main length and vigour index. Based on the vigour index, ischolar_main/shoot ratio plus trees of T. arjuna from Chakradharpur and Garwha and of T. tomentosa from Baharagoda have been identified for multiplication.

Keywords

Terminalia Arjuna, T. tomentosa, Provenances, Germination, Biomass Attributes

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Gargi R. Kumar ¹, I. Hembrom ¹, M. K. Sinha ¹

Affiliations
1 Central Tasar Research and Training Institute, Ranchi, Jharkhand, IN

Abstract

Terminalia tomentosa (Combretaceae) has been well recognized in tropical tasar silk industry as the most important primary food plant. Fifty accessions of T. tomentosa of diverse origin were selected for studying the genetic diversity for 36 morpho-physio-anatomical parameters. Analysis of variance indicated a significant difference among accessions for most of the quantitative characters studied. The maximum coefficient of variation was recorded for phenol (53.21%) followed by proline (52.10%), moisture (50.16%) and protein (43.7%), contents in the leaf. All the accessions were grouped into 7 clusters with maximum accessions (21) in cluster I followed by cluster II and cluster IV having 11 accessions each. Cluster III had 4 accessions and remaining clusters were represented by one accession each. The presence of variability in the 50 germplasm accessions was also reflected in the cluster means for traits studied. Maximum contribution towards genetic diversity (47.92%) was recorded for proline followed by protein (26.37%) contents, thereafter, reducing (10.53%) and non reducing sugar (11.27%) contributed for genetic diversity. The results indicated that pattern of distribution of genotypes into various clusters was at random indicating that geographical distribution and genetic diversity were not related.

Keywords

Terminalia tomentosa, Variability, Cluster Analysis.

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