Self-incompatible dihaploid potato line and production method therefor, and hybrid potato and seed production method therefor

Abstract

Disclosed is a self-incompatible dihaploid potato and a production method therefor, and a hybrid potato and a seed production method therefor. The production method includes the following steps: haploid-inducing a diploid potato carrying one or more heterozygous self-compatibility genes by a haploid induction line, and screening haploid mutants; selecting a haploid mutant which does not contain any self-compatible gene; and performing chromosome doubling on the haploid mutant which does not contain any self-compatibility gene to obtain a self-incompatible dihaploid potato line. The self-incompatible dihaploid potato is used as a female parent for seed production, such that emasculation may be avoided, hybrids do not bear fruits, and the yield of the potato is increased.

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