Genetic relationship between some cytoplasmic male sterility systems in sorghum

✍ Scribed by A. Ganga Kishan; S. T. Borikar

• Publisher: Springer
• Year: 1989
• Tongue: English
• Weight: 333 KB
• Volume: 42
• Category: Article
• ISSN: 0014-2336
• DOI: 10.1007/bf00034462

✦ Synopsis

Genetic analysis of cytoplasmic male sterility systems in sorghum was undertaken by evaluating a set of 25 A x B crosses and another set of 171 A x R crosses . Male steriles included diverse sources reported from U .S .A . and India . Fertility restoration in crosses was assessed by studying pollen sterility under microscope and seed setting under selfed earheads . Male fertility restorers are identified for diverse cytoplasms .

Accordingly the diverse cytoplasms are grouped and listed in the increasing order of their sterility as A, & CK 60A -* A, -* A, -M31-2A & M35-1A (A ; tentative) -* A 3 & VZM2A -* G,A (A, tentative) and consequently fertility restoration also becomes difficult in the same order for utilization in the breeding programmes . Among the non-milo cytoplasms, A, among exotics and maldandi ( M31-2A and M35-1A) among Indian sources, can be utilised for practical exploitation in breeding programmes .