Russian open-pollinated varieties of sunflower as an initial material for breeding of lines restored pollen fertility

All 14 varieties of sunflower of a various origin studied in experience to some extent possessed ability to restore pollen fertility at source CMS on the basis of cytoplasm H. petiolaris. The minimal concentration of such biotypes is noted at variety Chakinsky 931 (0.8 %) and Sibirsky 91 (1.4 %), and maximal - at a hybrid population Krepysh (64.0 %). High enough proportion of such biotypes is revealed at variety R-453 (Rodnik), Skorospely, VNIIMK 8883, Bogucharets and Meteor. Varieties Voronezhsky 638, Buzuluk, Yenisei and Chakinsky 602 possessed low restorer ability (4.8-10.3 %). For the period 2001-2006 during reproduction of varieties VNIIMK 8883, Meteor Krepysh there was an increase of a proportion of the biotypes restoring pollen fertility. The population structure of varieties Voronezhsky 638 and R-453 has remained practically constant.