The study of the combining ability of the inbred lines of winter rye according to top-crossing method

• Main Authors: A. A. Goncharenko, S. A. Ermakov, A. V. Makarov, T. V. Semenova, V. N. Tochilin, O. V. Krakhmaleva
• Format: Article
• Language: Russian
• Published: Federal State Budgetary Scientific Institution “Agricultural Research Center “Donskoy”" 2018-05-01
• Series: Зерновое хозяйство России
• Subjects: озимая рожь; инбредные линии; цитоплазматическая мужская стерильность (цмс); тестер; гибрид; урожайность; общая и специфическая комбинационная способность; winter rye; inbred lines; cytoplasmic male sterility (cms); tester; hybrid; productivity; general and specific combining ability
• Online Access: https://www.zhros.online/jour/article/view/91

Fifty interline hybrids of F1 of winter rye obtained from crossing of 25 sterile inbred lines with male fertile lines ‘N-1172’ and ‘N-1185’ as testers have been studied. The tests were carried out on the plot of 8.0m2 in a triple sequence with seeding rate of 500 kernels per 1m2. The productivity of the hybrids F1 ranged from 70.2 till 90.6 hwt/ha (tester ‘N-1172’) and from 71.5 till 102.6 hwt/ha (tester ‘N-1185’). On the whole the number of hybrids F1 with significant heterosis of productivity was 13 per 50 (or 26%). Both a general and specific combining ability (Ffact.= 2.41 and 2.32 respectively with F05 =1.63) contributed a lot in the dispersion of the trait of productivity. The sterile analogs of the lines ‘N-325’, ‘N-1078’, ‘N-1179’, ‘N-1238’,‘N-1276’ and the line-tester ‘N-1185’ showed a reliably high GCA. The lines ‘N-48’, ‘N-71’, ‘N-463’, ‘N-700’ and ‘N-1179’ showed high effect of SCA. A significant difference in a combining value of the studied line-testers has been established. It has been noted that the level of their own productivity is the most important sign for selection of the lines on GCA.