中国糖料2024，Vol.46Issue(4)：19-27,9.DOI:10.13570/j.cnki.scc.2024.04.003
桂糖55号的亲本来源、抗性及适应性分析
Parentage and Resistance and Adaptability Analysis of Sugarcane Variety Guitang 55
摘要
Abstract
[Objective]Smut is a major disease in sugarcane.This study aims to analyze the genetic mechanisms underlying the resistance traits of the smut-resistant sugarcane variety'Guitang 55',providing references for its rational promotion and utilization.[Method]By examining the parentage of the sugarcane variety'Guitang 55'and summarizing results from multi-site,multi-year resistance tests against smut disease and comparative trials,this paper highlights its resistance and adaptability characteristics.[Result]The results showed that'Guitang 55'was the F4 of S.spontaneum of Taiwan and Java,and the F5 of S.spontaneum of India,exhibiting considerable genetic heterogeneity.'Guitang 55'inherits many excellent traits from its parents,such as smut resistance,tolerance of cold and drought,high storability,strong ratooning ability and high yield.The smut resistance of'Guitang55'reached grade 2,with an incidence rate of 6.1%testing by the Quality Inspection and Testing Center for Sugarcane and Products of the Ministry of Agriculture and Rural Affairs.Under natural drought conditions in 2019,the plant height of'Guitang55'was equal or slightly higher than'Xintaitang 22'(CK),and the yield of'Guitang55'increased by 4.91%-20.07%as compared with the CK.Although seed cane had endured for one month of field storage,the germination rate of'Guitang 55'still reached 62.00%.According to the comparison tests within multi-year by multi-site from 2015 to 2021,it showed that cane yield and sugar yield of'Guitang 5'was higher than that CK,and the yield and sucrose content of'Guitang 55'were equal to main cultivars'Guitang42'and'Guiliu05-136'.In 2015-2017,results from ten perennial tests indicated that the'Guitang 55'consistently increased its yield on ratoon crop.In the variety comparative test,The yield of second ratoon cane was significantly higher than the first ratoon crop,and it maintainced 3 or more ratoon crops.[Conclusion]With a rich wild ancestry,wide genetic basis and great genetic heterogeneity,'Guitang 55'showed strong stress tolerance,extensive adaptability,strong ratoon ability,and excellent yield.'Guitang 55'should be further used in production.关键词
甘蔗/桂糖55号/亲本/黑穗病/抗性/适应性Key words
sugarcane/Guitang 55/parentage/smut/resistance/adaptability分类
农业科技引用本文复制引用
贤武,邓宇驰,周会,经艳,黄海荣,唐仕云..桂糖55号的亲本来源、抗性及适应性分析[J].中国糖料,2024,46(4):19-27,9.基金项目
国家重点研发计划项目子课题(2022YFD2301102-05) （2022YFD2301102-05）
财政部和农业农村部国家现代农业产业技术体系建设项目(CARS-170107) （CARS-170107）
广西科学研究与技术开发计划项目(桂科攻 1598006-1-1A) （桂科攻 1598006-1-1A）
广西农业科学院基本科研业务专项(桂农科 2021YT001)资助. （桂农科 2021YT001）
