Lens Newsletter 12(2)
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A Slinkard, Fred J. Muehlbauer, William Erskine, B. Sharma, E. Riva, Kamal Khalil Hindawi, Lynn Teo Simarski. (30/9/1995). Lens Newsletter 12(2). Lebanon: International Center for Agricultural Research in the Dry Areas (ICARDA).
Abstract
Karyotypes of all lentil species consist of seven pairs of chromosomes with median or near-median centromeres. A secondary constriction (often faint) occurs near the centromere of one or, rarely, two pairs of chromosomes. Crossing relations and chromosome pairing in the F1 revealed two "crossability" groups or species: Lens culinaris, and L. nigricans. Both species were subdivided into subspecies as follow: L. culinaris spp. culinaris, L. culinaris spp. orientalis, L. culinaris spp. odemensis: and L nigricans spp. nigricans, and L,nigricas ssp. ervoides. F1 hybrids within each species and various degrees of fertility. Crosses between L. culinaris and L. nigricas can be made using embryo culture. The genus Lens can thus be considered as one large gene pool from the plant breeding standpoint, but as two isolated gene pools from the evolutionary standpoint.
