Open AccessDESIGNING SCHEMES FOR SEED PRODUCTION OF SPRING RAPE F1 HYBRIDS BASED ON CMS
Author(s) -
Nina Markelova,
Albina Vlasova,
V. P. Cherepanov,
Vladimir V. Karpachev
Publication year - 2020
Publication title -
adaptivnoe kormoproizvodstvo
Language(s) - English
Resource type - Journals
ISSN - 2222-5366
DOI - 10.33814/afp-2222-5366-2020-4-89-95
Subject(s) - hybrid , biology , cytoplasmic male sterility , rapeseed , software maintainer , agronomy , horticulture , inbred strain , botany , sterility , genetics , gene
As the result of the research conducted in 2018–2020 at the All-Russian Rapeseed Research Institute, a scheme of primary seed farming of self-pollinated lines and F1 hybrids of spring rape has been developed, over 45 varieties have been created, including self-pollinated lines, simple interline and three-line hybrids. A comparative appraisal of spring rape inbred lines (female parents) and hybrids of the two most common systems of cytoplasmic male sterility (CMS) – Polima (LHS-1, LMS-1, LMS-2) and Ogura (LCS-4, LCS-5, LCS-6), was made. Yield traits distinctiveness in simple sterile hybrids of Polima and Ogura types was studied; it has been asserted that when compared to inbred maternal lines the traits predominate in hybrids, the indices are higher by 24.8% in the hybrids based on sterile Ogura cytoplasm and by 10.7% in the hybrids on sterile Polima cytoplasm. In our studies, self-pollinated lines, the maternal components of the hybrids, are inferior to the hybrids in terms of crude fat content in seeds, it is 6.5% lower than in the hybrid forms for the CMS Pol system and 17.3% lower for the forms of the CMS Ogu system. It was determined that the seed yield of CMS systems hybrids of Ogura type is on average 22.0% higher than the seed yield of Polima hybrids. The starting material for primary seed production of rapeseed hybrids based on CMS has been developed.