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A mature rubber plantation
Amazonian accessions of wild Hevea germplasm – A potential source of drought tolerance
M. A. Mercy, D.B. Nair, Meena Singh, T. Meenakumari, C.P. Reghu and Kavitha K. Mydin
Rubber Research Institute of India, Kottayam – 686 009, Kerala, India Rubber Board
(Ministry of Commerce & Industry, Government of India) Email for correspondence:mercyma2006@gmail.com
Introduction
Expansion of rubber cultivation from traditional to non-traditional regions in India
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Introduction contd…
Early detection of stress resistant traits – useful for the development of location specific clones.
The narrow genetic base of Wickham genepool and the unidirectional selection for yield limits the availability of sufficient genetic variability.
1981-IRRDB germplasm collection – a valuable reservoir of genes for various abiotic stresses.
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Acre : Brasileia, Feijo, Sena Madureira, Tarauaca, Xapuri
Rondonia –Ariquemes, Calama, Costa Marques, Jiparana, Ouro Preto, Pimenta Bueno, Jaru Mato Grosso: Aracotuba, Cartriquaca, Itauba, Vila Bella
Provenance-wise conservation- India
Introduced into India from 1981 – 1990 through Malaysia
Provenance No.of Accessions conserved localities
S.India N.East Total
Acre 5
Rondonia 7
Mato Grosso 4
Total 16
1530 242 1772
1540 348 1888
465 382 847
3576 972 4548
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Objective of the study
To identify the drought tolerance potential of Amazonian accessions using various morphological, physiological, structural and biochemical parameters related to drought tolerance.
- traditional region - hot spot
Effect of moisture stress on plant growth
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Drought affected accession
Sun scorching in the leaves
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