Pedigree analysis of sugarcane parental breeding pool used in evolving 'Co' varieties in India

Ravinder Kumar; K. Mohanraj; A. Anna Durai; M. N. Premachandran

Ravinder Kumar Division of Crop Improvement, Sugarcane Breeding Institute, Coimbatore 641 007
K. Mohanraj Division of Crop Improvement, Sugarcane Breeding Institute, Coimbatore 641 007
A. Anna Durai Division of Crop Improvement, Sugarcane Breeding Institute, Coimbatore 641 007
M. N. Premachandran Division of Crop Improvement, Sugarcane Breeding Institute, Coimbatore 641 007

Keywords: Sugarcane, pedigree, coefficient of parentage, breeding pool, genetic diversity.

Abstract

The pedigree of the commercial sugarcane varieties ('Co' canes) evolved from Sugarcane Breeding Institute, Coimbatore, India during 1970-2009 was studied. A total of 1088 'Co' canes with known pedigree were evolved, among them 934 were from bi-parental crosses. The decade wise usage of breeding stocks revealed that clones Co 86011 (during 2000-2009), Co 7201 (during 1990-1999), Coe 671 (during 1990-1999 and 1980-1989) and Co 775 (during 1970-1979) were the most successful parents in evolving 'Co' canes. Fifty nine breeding stocks produced