cast
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Vladimir Solovyov
Mikhail Ivanovich Kalinin
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Grigori Belov
Ivan Vladimirovich Michurin
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Nikolai Shamin
Terentiy
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Fyodor Grigoryev
Kartashov
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Mikhail Zharov
Khrenov
- Konstantin Nassonov father Khristofor
- Aleksei Zhiltsov Bykov
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Ivan Nazarov
postman
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Viktor Khokhryakov
Ryabov
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Dmitriy Dubov
Sinitsyn
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Gennadi Pechnikov
Lesnitskiy
- Vyacheslav Isayev Mayer
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Sergei Tsenin
Wallace Beard
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Yuri Lyubimov
translator
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Ivan Kashirin
peasant
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Sergey Bondarchuk
selectionist (uncredited)
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Aleksandr Smirnov
selectionist (uncredited)
- Viktor Klyucharyov professor Kigunov (uncredited)
- Pavel Gaideburov Pashkevich (uncredited)
- Yevgeniya Khovanskaya Pashkevch's wife (uncredited)
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Aleksey Konsovskiy
Pashkevich's guest (uncredited)
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Klara Luchko
Pashkevich's guest (uncredited)
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Anatoliy Larionov
Michurin in his youth (uncredited)
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Yevgeny Gurov
Bykov's guest (uncredited)
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Pyotr Savin
member of the revkom (uncredited)
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Nikolai Khryashchikov
member of the revkom (uncredited)
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Anatoliy Zhukov
Shurusha (uncredited)
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Sergei Antimonov
official (uncredited)
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Mikhail Grodskiy
professor (uncredited)
- Viktor Matisen professor (uncredited)
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Aleksandr Pelevin
first scientist (uncredited)
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Nikolai Neronov
second scientist (uncredited)
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Leonid Knyazev
worker (uncredited)
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Pavel Vinnik
Kartashov's student (uncredited)
- Svetlana Bogolyubova Natasha (uncredited)
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Anatoliy Solovyov
student (uncredited)
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Aleksey Bakhar
division commander (uncredited)
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Nikolay Lebedev
professor (uncredited)
- Andrei Petrov Meshkov (uncredited)
- Vsevolod Semyonov secretary (uncredited)
- Valerian Kazanskiy guest (uncredited)
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Natalia Sadovskaya
Alexandra Michurina in young age (uncredited)
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Oleksandra Vasylieva
Aleksandra Vasilyevna Michurina
- Boris Svoboda Head of department (uncredited)
- Aleksandr Nezhdanov Marfin