Vol. 12, Special Issue 10 (2023)

Author(s):
G Rakesh, G Eswara Reddy, Swapna N, M Saicharan, Y Swathi, B Balaji Naik and M Vijay Kumar

Abstract:
Selection is a regular process in plant breeding programmes that plant breeders must perform in order to obtain superior cane genotypes. The effectiveness of selecting operations will be determined by the adoption of proper selection criteria. The goal of this study was to look at the inheritable factors that influence the cane yield. In 2022–23, 26 advanced sugarcane clones were planted at the Regional Sugarcane and Rice Research Station, Rudrur, Nizamabad District, Telangana State. These clones were replicated three times in a randomised complete block design. The result of correlation analysis revealed that CCS yield showed a highly significant positive association with cane yield, followed by the number of millable canes ('000/ha), single cane weight at 12^th month (kg), cane length at 12^th month (cm), shoots at 240 days after planting ('000/ha), and tillers at 120 days after planting ('000/ha), respectively. This indicates that an improvement in these attributes would simultaneously result in an improvement in cane yield and selection based on these characters while being effective. In addition, path analysis showed that the highest positive and direct effect was found for CCS % 12^th month (1.791), followed by Brix % 12^th month (1.186), CCS yield (0.842), CCS % 10^th month (0.526), Sucrose % 10^th month (0.351), purity % 12^th month (0.166), and it was also observed the number of millable canes ('000/ha) (0.150), single cane weight at harvest (kg) (0.119), shoots at 240 days after planting ('000/ha) (0.018), and cane length at 12 month (cm) (0.016). It was also observed that the number of millable canes (0.586), single cane weight at harvest (kg) (0.429), cane length at 12^th month (0.299), Brix % at 12^th month (0.289), shoots at 240 days after planting ('000/ha) (0.274), Sucrose % at 12^th month (0.252), CCS % at 12^th month (0.228), and tillers at 120 days after planting ('000/ha) (0.165) exhibited a high direct effect via CCS yield on cane yield. It is concluded that simultaneous selection for CCS yield, number of millable canes ('000/ha), single cane weight at harvest (kg), cane length at 12 month (cm), shoots at 240 days after planting ('000/ha), and tillers at 120 days after planting ('000/ha) will be more rewarding in selecting desirable sugarcane clonesy.