Correlation Studies in Early Clonal Generation under Water Logging Condition in Sugarcane for Yield and Its Attributing Traits
G. Sai Varija
Department of Genetics and Plant Breeding, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India.
Balwant Kumar *
Department of Genetics and Plant Breeding, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India.
M. Vennela
Department of Genetics and Plant Breeding, Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar, India.
*Author to whom correspondence should be addressed.
Abstract
An experiment was carried out during 2021-22 at Sugarcane Research Institute, Dr. RPCAU, Bihar using 24 clones that were planted in augmented design along with two checks. Data was recorded for the nine characters. There was a positively significant correlation found among cane yield and the following characteristics: cane diameter at harvest, number of millable canes at harvest, germination percentage at 45 days after planting, and number of shoots at 120 days after planting. Whereas, the number of aerial roots per node showed a negative correlation with cane yield. Traits viz., germination % at 45 days after planting, number of shoots at 120 days after planting, cane diameter at harvest, single cane weight, number of millable canes at harvest, HR Brix in November had direct and positive effect on cane yield, among these, number of millable canes at harvest showed highest direct and positive effect followed by single cane weight on cane yield, whereas, plant height at harvest, number of aerial roots per node, HR Brix in December and January showed negative direct effect on cane yield. The characters that showed significant correlation and positive direct effect can be selected further to obtain higher cane yields in sugarcane.
Keywords: Cane yield, correlation, genotype, path coefficient, sugarcane