CoC 25–An early maturing high-yielding and red rot-resistant sugarcane variety suitable for the East Coast Zone of India

Abstract

Aim: To develop early duration high-yielding sugarcane variety coupled with resistance or tolerant to major disease (red rot) and insect pests (borer complex). Methodology: CoC 25 was developed from two parents (Co 85002 and HR 83-144) and evaluated in station trials, state multi-location trials (five locations) and zonal varietal trials of AICRP (S) trials (IVT, AVT-I, AVT-II and AVT ratoon in five locations). Simultaneously, this clone was screened for major pest and diseases. Results: Based on the superiority performance of CoC 25 in cane yield (21.50% higher) and sugar yield (22.72% higher), it was observed in AICRP trials over the national check variety CoC 01061. Cane yield superiority was 12.75% compared to check variety observed in state multi-location trials. The CoC 25 was found moderately resistant (3.6%) to red rot disease and less susceptible to early shoot borer (9.42%) and inter-node borers. Interpretation: The results of this study revealed that CoC 25 is superior in terms of cane yield, CCS yield and resistance to red rot disease and it is less susceptible to borers. It was released by SVRC and notified for commercial cultivation in Tamil Nadu and Puducherry. Key words: Cane yield, CCS yield, Red rot resistance, Sugarcane