Research Article | Published: 01 September 1997

Genetic divergence in leaf characters of Terminalia arjuna (Roxb.) W. & A. and T. tomentosa W. & A.

P. K. Srivastav, Shova Beck, Abad Ahmad Siddiqui, B. N. Brahmachari and K. Thangavelu

Journal of Non-Timber Forest Products | Volume: 4 | Issue: 3/4 | Page No. 103-111 | 1997
DOI: https://doi.org/10.54207/bsmps2000-1997-4V5222 | Cite this article

Abstract

Genetic divergence, as measured by D2 statistics was studied in 39 genotypes of Terminalia arjuna and T. tomento­sa complexes for 9 foliar attributes, viz., area, length, breadth, L/B ratio, L x B, single leaf weight, stomatal frequency, stomatal length and stomatal breadth. Maximum contribution (60.46%) towards divergence was made by leaf weight followed by stomatal frequency (14.44%) and stomatal length (12.55%). The 39 genotypes fall into 7 clusters. The clusters I to VII had 24, 8, 1, 1, 1, 3 and 1 genotypes respectively. The clusters III to V and VII exhibited mini­mum (0.0%) intracluster distance whereas maximum (6.097%) intracluster distance was observed in cluster VI. The maxi­mum intercluster distances (29.213%, 28.207%) were noticed between clusters VI-IV and VI-III while minimum (5.850%, 5.87%) intercluster distance was exhibited between VI-VII and III-IV clusters respectively. The minimum (107.667) and maximum (464.22) cluster means for leaf area was exhibited by clusters III and VI while clusters IV and VI had minimum (2.490) and maximum (23.978) cluster means for leaf weight respectively. On the contrary, the maximum (67.333) and minimum (25.333) cluster means for stomatal frequency were exhibited by clusters VII and V respectively. Present stud­ies support the view that separate taxonomic status is required for T. arjuna var. arjuna syn. T. glabra, T. arjuna var. angustifolia syn. T. berryi, T. crenulata, T. coriacea and T. alata var. alata.

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Srivastav, P.K., Beck, S., Siddiqui, A.A., Brahmachari, B.N. and Thangavelu, K., 1997. Genetic divergence in leaf characters of Terminalia arjuna (Roxb.) W. & A. and T. tomentosa W. & A.. Journal of Non-Timber Forest Products, 4(3/4), pp.103-111. https://doi.org/10.54207/bsmps2000-1997-4V5222

Publication History

Manuscript Published on 01 September 1997

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