BREEDING OF WINTER RAPESEED INBRED LINES FOR THE DEVELOPMENT OF PARENT FORMS FOR HYBRIDS

E B Bochkaryova,E A Strelnikov,V V Serdyuk,L A Gorlova

doi:10.30901/2227-8834-2019-4-121-125

Abstract

Introduction. The V.S. Pustovoit All-Russian Research Institute of Oil Crops (VNIIMK) performs the breeding of interline rapeseed hybrids using the Ogura CMS. The program of interline winter rapeseed hybrid development was aimed at studying the efficiency of self-pollinated line breeding from population cultivars, assessing the impact of inbreeding depression on economically important traits, analyzing the changes in the lines’ traits after their transition to the sterile basis, and obtaining fertility restorer lines with an acceptable level of glucosinolate content in seeds.Materials and methods. Intraspecific hybrids, cultivars developed at the Pustovoit Institute and those of foreign breeding were employed as parent material for the development of self-pollinated lines. Self-pollination of rapeseed plants was performed using spunbond isolators. Over 1000 plants were self-pollinated every year. Generations of self-pollinated lines S1 –S4 were planted on 2.25 m2 plots, and during the growth season their visual screening was undertaken to assess their morphobiological traits. Starting with S5, the lines were evaluated for their yield on 7.5 m2 plots.Results. The inbreeding depression was found to not exceed 3–15% of the seed yield. The transition of the lines to sterile cytoplasm did not have any negative consequences. A series of experimental hybrids were developed, exceeding the reference cultivar ‘Loris’ in seed yield by 23–48%. New hybrid combinations also exceeded the reference in seed yield by 21–54%.

Highlights

The program of interline winter rapeseed hybrid development was aimed at studying the ef iciency of self-pollinated line breeding from population cultivars, assessing the impact of inbreeding depression on economically important traits, analyzing the changes in the lines’ traits after their transition to the sterile basis, and obtaining fertility restorer lines with an acceptable level of glucosinolate content in seeds
Intraspeci ic hybrids, cultivars developed at the Pustovoit Institute and those of foreign breeding were employed as parent material for the development of self-pollinated lines
Generations of self-pollinated lines S1–S4 were planted on 2.25 m2 plots, and during the growth season their visual screening was undertaken to assess their morphobiological traits

Summary

СЕЛЕКЦИЯ ИНБРЕДНЫХ ЛИНИЙ РАПСА ОЗИМОГО ДЛЯ СОЗДАНИЯ РОДИТЕЛЬСКИХ ФОРМ ГИБРИДОВ

С. Пустовоита (ФНЦ ВНИИМК) селекцию межлинеиных гибридов рапса ведут с использованием ЦМС Ogura. По программе создания межлинеиных гибридов рапса озимого ставилась задача изучить эффективность селекции самоопыленных линии из сортов популяции, оценить влияние инбреднои депрессии на хозяиственно значимые признаки, изучить изменение признаков линии при переводе их на стерильную основу, получить линии – восстановители фертильности с допустимым уровнем содержания глюкозинолатов в семенах. В качестве исходного материала для получения самоопыленных линии использовали внутривидовые гибриды, сорта селекции ФНЦ ВНИИМК и сорта зарубежнои селекции. Самоопыление растении рапса осуществляли с помощью изоляторов из спанбонда. Поколения самоопыленных линии S1 – S4 высевали на делянках 2,25 м2 и в период вегетации проводили визуальную браковку по морфобиологическим признакам. Начиная с S5, проводили на делянках 7,5 м2. Превышающих сорт-стандарт ‘Лорис’ по урожаю семян на 23–48%. Новые гибридные комбинации также превышают стандарт по этому показателю на 21–54%

Introduction

Материал и методы

Результаты и обсуждение

Тип цитоплазмы