Вплив гетерогенності тетраплоїдного запилювача на прояв господарсько-цінних ознак ЧС гібридів цукрових буряків

• Опубліковано в: : Фактори експериментальної еволюції організмів
• Дата: 2015
• Автори: Корнєєва, М.О., Мацук, М.Б., Чемерис, Л.М.
• Формат: Стаття
• Мова: Українська
• Опубліковано: Інститут молекулярної біології і генетики НАН України 2015
• Теми: Прикладна генетика і селекція
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/177383
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Вплив гетерогенності тетраплоїдного запилювача на прояв господарсько-цінних ознак ЧС гібридів цукрових буряків / М.О. Корнєєва, М.Б. Мацук, Л.М. Чемерис // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2015. — Т. 16. — С. 125-128. — Бібліогр.: 7 назв. — укр.

Aims. In triploid CMS sugar beet hybrids, for heterosis by agronomic signs to occur, it is necessary to involve a tetraploid
 population of pollinators in crossing stable by their ploidy level. However, in practical breeding one can come across
 triploid forms among tetraploid plants, which may lead to the formation of aneuploidies in F1 affecting the expression
 of agronomic traits in hybrids. Methods. By the top cross method, crossed were CMS lines originated from Ivanivska
 EBS, Uladivka EBS and tetraploid pollinator populations differed by part of triploid plants, namely 12.5, 25 and 50 %.
 We determined the agronomic performance in CMS hybrids of sugar beet by conventional methods. Results. With a share
 of triploid plants in a population of tetraploid component increasing, increased a share of aneuploidies (up to 37.5 %)
 infl uencing agronomic traits. In hybrid 1316/1043, germination reduced from 92 to 74 %, in hybrid 1363/1043 from 89 to
 73 %. Performance in hybrids involving CMS forms originated from Ivanivska EBS and Uladivka EBS also decreased,
 respectively, from 117–129 to 98–104 % (as compared to standard). Conclusions. High degree of heterogeneity of
 tetraploid pollinators according to their ploidy level infl uences agronomic characteristics due to the increased number
 of aneuploidies in CMS hybrids of sugar beet. Having used stabilized tetraploid populations as a parent component we
 obtain the highest performance; triploids share of 25 % signifi cantly lowers seed germination and performance.
 Keywords: sugar beet, hybrid, pollinator, heterogeneity, CMS line, germination, productivity performance.