Morphological variation in Astragalus hamosus L. and Coronilla scorpioides L. populations of Tunisia |
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Authors: | Aziza Zoghlami Mongi Zouaghi |
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Institution: | (1) Laboratoire de Productions Animales et Fourragères, Institut National de la Recherche Agronomique de Tunisie, Rue Hédi Karray, 2080 Ariana, Tunisia;(2) Laboratoire de Productions Fourragères, Institut National Agronomique de Tunisie, 43, Avenue Charles-Nicolles, 1082 Tunis Mahrajène, Tunisia |
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Abstract: | Morphological variation between Astragalus hamosus and Coronillascorpioides populations was studied using local germoplasm collected in northern and central Tunisia. Twenty-one morphological traits
were recorded and data were analysed using complementary statistical analysis. Considerable variation based on morphological
and agronomical traits was found between populations and for both species. Pod and peduncle lengths as well as flowers number
were the most discriminant variables between populations. Differences were also found for variables like seed number per pod,
seed yield and dry matter production. Significant correlations were found between plant traits and the environmental parameters
of the origin sites. This study revealed enough variation among populations to initiate a selection programme for pasture
improvement in arid and semi-arid areas of Tunisia, where the two species are well adapted.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | Astragalus hamosus cluster analysis Coronilla scorpioides local populations morphological variation principal component analysis Tunisia |
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