THE ROLE OF POLYPLOIDY IN ADAPTATION AND SETTLING OF STEPPE SHRUBS IN CENTRAL ASIA

Natalia V Ekimova, Elena N Muratova, Pavel P Silkin
2011 Экологическая генетика  
Chromosome numbers for some species of Central Asia steppe shrubs are given: Rhamnus erythroxylon Pall. (Rhamnaceae), Caragana buriatica Peschk. (Fabaceae), Amygdalus pedunculata Pall., Armeniaca sibirica (L.) Lam. (Rosaceae), Atraphaxis pungens (Bieb.) Jaub. et Spach. and A. frutescens (L.) C. Koch (Polygonaceae). Chromosome numbers of some species were determined for the first time. Comparative analysis of adaptive properties of polyploid and diploid species has been conducted. It was
more » ... hed that natural polyploids are more adaptive to existence in extreme conditions. They possess by high potential for survival and characterized by more high level of intraspecific polymorphism, abundant flowering and fruitification, ability of propagate both generative and vegetative means, high seed germination.
doi:10.17816/ecogen9115-20 fatcat:u34uqajfanbbroel6zk3jw24pe