Male fertility restoration of tetrad pollen sterility in BC₁ and its derived populations from Solanum verrucosum.

ABSTRACT:

Background

Tetrad sterility-type cytoplasmic male sterility (T-CMS) is characterized by sterile pollen grains that stick together to form a tetrad-like structure (tetrad pollen). T-CMS has been observed in interspecific hybrids with the cytoplasm of Solanum verrucosum (2n = 2x = 24) and in potato cultivars with the cytoplasm of S. stoloniferum (2n = 4x = 48).

Results

In this study, we developed a BC₁ population from a T-CMS-type F₁ hybrid (S. verrucosum PI 498061 × 2x breeding clone) backcrossed with S. verrucosum PI 498061. We then generated two sib-mated and two self-mated populations from the BC₁ plants. Among the 361 plants across these five populations, we identified plants with varying degrees of fertility restoration. Their pollen phen

SUBMITTER: Sanetomo R 

PROVIDER: S-EPMC12729001 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature