Figures (1)  Tables (1)

    • Figure 1. 

      Zhongtang 3 and Zhongfu 1 as strategically technology-empowered cultivars driving the transformation of the sugarcane industry. This schematic summarizes the integrated innovation framework underlying the development of ZT3 and ZF1. The blue panel depicts the parental origins and distinct breeding pathways of ZT3 and ZF1. The green panel presents comparative trait evaluations of the four parental lines and the two derived cultivars, including field yield (FY), sugar production (SP), lodging tolerance (LT), suitability for mechanization (SM), disease resistance (DR), cold tolerance (CT), and drought tolerance (DT). The yellow panel illustrates the four-component integrated technology system designed to enhance sugarcane's quality and production efficiency. The pink panel highlights the five specialized research teams, whose coordinated efforts collectively support the breeding, deployment, and industrial impact of these landmark cultivars.

    • Cultivars Parentage Key characteristics
      ZT1 YT99-66 × NJ03-218 High sucrose content, strong ratooning ability, and mechanical adaptability
      ZT2 RY1 × ROC22 High smut resistance and excellent suitability for mechanical harvesting
      ZT3 YT99-66 × ROC28 High yield, high sucrose content, strong ratooning ability, and mechanical adaptability
      ZT4 K86-110 × HoCP95-988 High yield and high sucrose content
      ZT5 YT00-319 × ROC10 High sucrose content, strong ratooning ability, and mechanical adaptability
      ZT6 YL3 × GT02-761 High sucrose content, high yield, and very early maturity
      ZT7 GT02-761 × ROC22 Early maturity, high yield, and high sucrose content
      ZT8 ZZ50 × YL3 High sucrose content and strong ratooning ability
      ZF1 K5 × CT89-103 High yield, high sucrose content, and strong ratooning ability
      ZF2 YT00-319 × ROC22 High yield, high sucrose content, and strong ratooning ability
      ZF3 GT02-901 × K5 High yield, high sucrose content, and strong ratooning ability
      ZF1, ZF2 and ZF3 are all space radiation mutagenesis; that is, the hybrid seeds have been carried aboard in spacecraft.

      Table 1. 

      Parentage and key traits of the Zhongtang and Zhongfu series of sugarcane cultivars