热带作物学报2025，Vol.46Issue(10)：2364-2375,12.DOI:10.3969/j.issn.1000-2561.2025.10.008
特早熟高糖高产自动脱叶甘蔗新品种桂糖76号的选育及其区域生产能力表现
Breeding the Especially Early Maturing,High Sucrose,High Yield and Automatically Defoliated New Sugarcane Variety GT76 and Its Performance of Regional Production Capacity
摘要
Abstract
Improving and upgrading the efficiency of sugar factories and income of sugarcane farmers are the funda-mental goals of the sugarcane industrial development.This study introduced the breeding process of the early-maturing,high-sugar,high-yield,automatic defoliation new sugarcane variety Guitang 76(GT76)and its production efficiency in different regions,in order to provide planting technical basis for this new sugarcane variety in the coming years.Gui-tang 76 was selected through the "five nurseries" breeding procedure,and developed based on traits of early maturity,high sugar content and high yield,and also included characteristics of strong perennial roots,high uniformity,tolerance to drought,disease and infertility,and automatic defoliation.Finally,the Guitang 76 production performance was evaluated through the Guangxi new sugarcane variety regional test.The main process was as follows:In April 2010,220 seedlings were obtained from the combination of CP81-1254×ROC22,planted in the hybrid nursery.In February 2011,five healthy individual plants were selected from the hybrid nursery and planted in the selection nursery.In December 2011,two strains were selected from the selection nursery and entered the identification nursery.In January 2013,one strain was selected from the identification nursery(named Guitang 10-2118),and in February 2013,it entered the preparation variety comparison nursery.After observation and screening,it was selected into the variety comparison nursery in March 2014,and later selected for the 2021-2023 of Guangxi sugarcane new variety regional trials(one year new planted sugarcane and two years perennial sugarcane trials).The results of regional trials showed that the stem diameter of Guitang 10-2118 was between 2.5-3.0 cm,which is a medium-large stem variety,the average number of effective stems was 8140 per hm2 more than that of the control variety ROC22.The yield of newly planted sugarcane was 7.72％lower than that of ROC22,but the yield of perennial sugarcane in the first year was 7.28％higher than that of ROC22,and the yield of perennial sugarcane in the second year was 15.24％higher than that of ROC22,and the average yield in three years was higher(5.24％)than that of ROC22.The average sucrose content from November to March was 15.04％,which was 1.32％higher than that of ROC22.Guitang 10-2118 also showed other significant traits including tall plants,long internodes,automatic defoliation,strong perennial roots,wide adaptability,high resistance to smut and tip rot,etc.Guitang 10-2118 was renamed as Guitang 76(GT76).This article also introduced the key points of cultivation strategies of GT76,providing technical support for its promotion,application and better cane production in coming years.关键词
甘蔗/桂糖76号/品种选育/自动脱叶/特早熟Key words
sugarcane/variety GT76/breeding/automatic defoliation/extremely early maturing分类
农业科技引用本文复制引用
梁强,Krishan K Verma,李杨瑞,刘晓燕,梁宏卫,韦海勇,胡顺,韦淙凯,李长宁,梁光凤,宋修鹏..特早熟高糖高产自动脱叶甘蔗新品种桂糖76号的选育及其区域生产能力表现[J].热带作物学报,2025,46(10):2364-2375,12.基金项目
广西自然科学基金项目(No.2023GXNSFAA026459) （No.2023GXNSFAA026459）
广西重点研发计划项目(桂科农AB24153004) （桂科农AB24153004）
国家自然科学基金项目(No.32201910). （No.32201910）
