导演 Олександр Довженко

Mikhail Ivanovich Kalinin Владимир Соловьёв

Ivan Vladimirovich Michurin Григорий Белов

Terentiy Николай Шамин

Kartashov Фёдор Григорьев

Khrenov 米哈伊尔·伊万诺维奇·扎罗夫

father Khristofor Константин Нассонов

Bykov Алексей Жильцов

postman Иван Назаров

Ryabov Виктор Хохряков

Sinitsyn Дмитрий Дубов

Lesnitskiy Геннадий Печников

Mayer Вячеслав Исаев

Wallace Beard Сергей Ценин

translator Юрий Любимов

peasant Иван Каширин

selectionist (uncredited) 谢尔盖·邦达尔丘克

selectionist (uncredited) Александр Смирнов

professor Kigunov (uncredited) Виктор Ключарёв

Pashkevich (uncredited) Павел Гайдебуров

Pashkevch's wife (uncredited) Евгения Хованская

Pashkevich's guest (uncredited) Алексей Консовский

Pashkevich's guest (uncredited) Клара Лучко

Michurin in his youth (uncredited) Анатолий Ларионов

Bykov's guest (uncredited) Евгений Гуров

member of the revkom (uncredited) Пётр Савин

member of the revkom (uncredited) Николай Хрящиков

Shurusha (uncredited) Анатолий Жуков

official (uncredited) Сергей Антимонов

professor (uncredited) Михаил Гродский

professor (uncredited) Виктор Матисен

first scientist (uncredited) Александр Пелевин

second scientist (uncredited) Николай Неронов

worker (uncredited) Леонид Князев

Kartashov's student (uncredited) Павел Винник

Natasha (uncredited) Светлана Боголюбова

student (uncredited) Анатолий Соловьёв

division commander (uncredited) Алексей Бахарь

professor (uncredited) Николай Лебедев

Meshkov (uncredited) Андрей Петров

secretary (uncredited) Всеволод Семёнов

guest (uncredited) Валериан Казанский

Alexandra Michurina in young age (uncredited) Наталья Садовская

Aleksandra Vasilyevna Michurina Александра Васильева

Head of department (uncredited) Борис Свобода

Marfin Aleksandr Nezhdanov