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- Title
Variability of East Africa tamarind (Tamarindus indica L.) populations based on morphological markers.
- Authors
Nyadoi, P.; Okori, P.; Okullo, J. B.; Obua, J.; Burg, K.; Fluch, S.; Nasoro, Magogo; Saleh, Haji; Temu, A. B.; Jamnadass, R.
- Abstract
Tamarind was recently earmarked for conservation to support livelihoods in East Africa. The objective of the current study was to generate knowledge of tamarind morphological variations, their correlation to environment, relation to mitochondrial haplotypes and thus suitability as markers for germplasm and conservation units' selection in East Africa. We characterized variations in tamarind diameter at breast height (DBH), crown section area (CSA) and height (morphological characters) in different environment (temperature, rainfall, soils, habitats, Phytocoria, altitudes and latitudes) and mapped the variations in relation to established mitochondria haplotypes. Results show that tamarind mean height, DBH and CSA increased from Island to mainland Phytocoria; respectively < 5 m to 14 m, 61 cm to 189 cm and 28 m3 to 229 m3 and were influenced (P<0.05) by altitudes, phytocoria and habitats. Soil exchangeable potassium also influenced (P = 0.03) tamarind DBH while CSA further varied (P<0.05) between the Somalia Maasai and other mainland phytocoria. Correlation (R) between tamarind morphological variations and environment was 59.5% and interestingly, the variations coincided with haplotypes diversity in populations, suggesting in homogeneous environment, morphological variants could be useful as markers for germplasm and conservation unit selection. Further correlation analysis is however needed to ascertain level of precision with which morphological (DBH, height and CSA) variants will be useful as selection markers in tamarind conservation programmes where these traits are of interest.
- Subjects
EAST Africa; TAMARINS; PLANT variation; CULTIVARS; PLANT species; PLANT habitats; REPRODUCTION
- Publication
Gene Conserve, 2010, Vol 9, Issue 36, p1
- ISSN
1808-1878
- Publication type
Article