Characteristics of reproduction of the self-pollinated sunflower lines in conditions of insufficient bee pollination

The researches were carried out in experimental seed-growing farm Berezanskoye of the Korenovskiy area of the Krasnodar region in the course of the period of 2008-2011. It was determined, that in conditions of insufficient bee pollination, the seed production fields of sterile maternal forms should be sown with the proportion of CMS analogues and lines-pollinators 8:6. This scheme of sowing provides an even pollination of all rows of maternal forms by increasing the proportions of the line-pollinator. In production of seeds of the first generation of hybrids Hermes, Merkury and Jupiter there should be used the sowing scheme with the proportion of rows of maternal and paternal forms - 12:4. For the hybrids Avangard and Altair the proportion of line-pollinator VK-585 should be increased in comparison with the scheme of sowing 12:4. The sowing scheme of hybridization fields with proportion of the rows of maternal and paternal forms 12:2 had proved to be unreasonable for hybrid Jupiter, because of the considerable drop in the set of hybrid seeds. The sowing of hybridization field on perimeter as a shelterbelt of the line-pollinator provides the increase of productivity of maternal form. The influence of a shelterbelt spreads upon 100 meters for hybrid Merkury, and on 200 meters for hybrid Jupiter.