Genetics of fertility restoration of ‘Wild Abortive’ cytoplasmic male sterility in rice, Oryza sativa L

Autor: M. R. Gagneja, T. S. Bharaj, G. S. Sidhu, S. S. Bains
Rok vydání: 1991
Předmět:
Zdroj: Euphytica. 56:199-203
ISSN: 1573-5060
0014-2336
DOI: 10.1007/bf00042364
Popis: Genetics of fertility restoration To avoid tedious repetitions we refer to male fertility and male sterility as fertility and sterility, respectively. in six varieties and breeding lines of rice was studied in ‘Wild Abortive’ cytoplasmic genetic male sterility system using cytoplasmic male sterile lines V 20 A and IR 54752 A. Fertility evaluation of the plants in F2 and testcross populations of the crosses of V 20 A with PR 103, PR 106 and PAU 502-94-1, and IR 54752 A with PAU 1124-36-1 and PAU 1126-1-1 revealed that fertility restoration in PR 103, PR 106, PAU 502-94-1, PAU 1124-36-1 and PAU 1126-1-1 was controlled by two independently segregating dominant genes. The two genes appeared to have additive effects; one of them being stronger than the other in imparting fertility restoration. Data on spikelet fertility of the plants in F2 and testcross populations of V 20 A/UPR 82-1-1 cross showed that fertility restoration in UPR 82-1-1 was controlled by two independently segregating dominant genes which exhibited recessive epistatic interaction.
Databáze: OpenAIRE
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