Vladimir Solovyov
Mikhail Ivanovich Kalinin
Grigori Belov
Ivan Vladimirovich Michurin
Fyodor Grigoryev
Kartashov
Konstantin Nassonov
father Khristofor
Gennadi Pechnikov
Lesnitskiy
Sergei Tsenin
Wallace Beard
Sergey Bondarchuk
selectionist (uncredited)
Aleksandr Smirnov
selectionist (uncredited)
Viktor Klyucharyov
professor Kigunov (uncredited)
Pavel Gaideburov
Pashkevich (uncredited)
Yevgeniya Khovanskaya
Pashkevch's wife (uncredited)
Aleksey Konsovskiy
Pashkevich's guest (uncredited)
Klara Luchko
Pashkevich's guest (uncredited)
Anatoliy Larionov
Michurin in his youth (uncredited)
Natalya Sadovskaya
Michurina in her youth (uncredited)
Yevgeny Gurov
Bykov's guest (uncredited)
Pyotr Savin
member of the revkom (uncredited)
Nikolai Khryashchikov
member of the revkom (uncredited)
Anatoliy Zhukov
Shurusha (uncredited)
Sergei Antimonov
official (uncredited)
Mikhail Grodskiy
professor (uncredited)
Viktor Matisen
professor (uncredited)
Aleksandr Pelevin
first scientist (uncredited)
Nikolai Neronov
second scientist (uncredited)
Leonid Knyazev
worker (uncredited)
Pavel Vinnik
Kartashov's student (uncredited)
Svetlana Bogolyubova
Natasha (uncredited)
Anatoliy Solovyov
student (uncredited)
Aleksey Bakhar
division commander (uncredited)
Nikolay Lebedev
professor (uncredited)
Andrei Petrov
Meshkov (uncredited)
Vsevolod Semyonov
secretary (uncredited)
Valerian Kazanskiy
guest (uncredited)
Natalia Sadovskaya
Alexandra Michurina in young age (uncredited)
Oleksandra Vasylieva
Aleksandra Vasilyevna Michurina
