PJB-1979-19
Studies on Libyan grasses . V. population variability and distribution of schismus arabicus and S. barbatus in libya
SHAMIM A. FARUQI
AND HAMEDA B. QURAISH
Abstract
Populations of schismus arabicus and
S. barbatus from different locations of Libya were collected and their morphology , cytology and reproductive behaviour were studied . the two species show a distinct morphological break between alloparic populations. Under sympatric conditions only S. barbatus and the tentative hybrids occur. This indicates that although S.arabicus did occur in this area in the past, now because of hybridization it has either disappeared or it has become very rare. Although both the species are self0breeders , but there must be frequent breakdown in autogamy. Chromosomal pairing and fertility of the tentative natural hybrids was normal.
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