Genetics of Male-Sterility in Gynodioecious Plantago-Coronopus .1. Cytoplasmic Variation

TY - JOUR

T1 - Genetics of Male-Sterility in Gynodioecious Plantago-Coronopus .1. Cytoplasmic Variation

AU - Koelewijn, H.P.

AU - Van Damme, J.M.M.

N1 - Reporting year: 1995 Metis note: 2039; CTE; PVP; file:///L:/Endnotedatabases/NIOOPUB/pdfs/Pdfs1995/Koelewijn_ea_2039.pdf

PY - 1995

Y1 - 1995

N2 - Inheritance of male sterility was studied in the gynodioecious species plantago coronophus using five plants and their descendants from an area of similar to 50 m(2) in each of six locations. The crosses were planned to test for cytoplasmic inheritance of male sterility. In four locations significant differences between reciprocal crosses were observed. The progenies of these reciprocal crosses were used in a crossing scheme designed to test whether these reciprocal differences were caused by different cytoplasmic types between the plants. In all four locations, the existence of at least two cytoplasmic types could be shown. Moreover, the results of the crosses between locations showed that the same two cytoplasmic types were present in all four locations. We therefore argue that there is only limited cytoplasmic variation in P. coronophus. In each cytoplasmic type a series of intermediate sex forms occurred. A marked difference in restoration level existed between the two cytoplasmic types. Plants with cytoplasmic type 2 hardly segregated male steriles, in contrast to plants with cytoplasmic type 1. [KEYWORDS: Origanum-vulgare l; lanceolata l; nucleocytoplasmic polymorphism; restorer gene; nuclear; hybridization; maintenance; inheritance; nicotiana; evolution]

AB - Inheritance of male sterility was studied in the gynodioecious species plantago coronophus using five plants and their descendants from an area of similar to 50 m(2) in each of six locations. The crosses were planned to test for cytoplasmic inheritance of male sterility. In four locations significant differences between reciprocal crosses were observed. The progenies of these reciprocal crosses were used in a crossing scheme designed to test whether these reciprocal differences were caused by different cytoplasmic types between the plants. In all four locations, the existence of at least two cytoplasmic types could be shown. Moreover, the results of the crosses between locations showed that the same two cytoplasmic types were present in all four locations. We therefore argue that there is only limited cytoplasmic variation in P. coronophus. In each cytoplasmic type a series of intermediate sex forms occurred. A marked difference in restoration level existed between the two cytoplasmic types. Plants with cytoplasmic type 2 hardly segregated male steriles, in contrast to plants with cytoplasmic type 1. [KEYWORDS: Origanum-vulgare l; lanceolata l; nucleocytoplasmic polymorphism; restorer gene; nuclear; hybridization; maintenance; inheritance; nicotiana; evolution]

M3 - Article

SN - 0016-6731

VL - 139

SP - 1749

EP - 1758

JO - Genetics

JF - Genetics

IS - 4

ER -