热带农业科学2026，Vol.46Issue(3)：22-29,8.DOI:10.12008/j.issn.1009-2196.2026.03.004
木薯新品种华南22号的选育及指纹图谱构建
Breeding of New Cassava Variety South China 22 and Construction of Its Fingerprint Profile
摘要
Abstract
South China 22(SC22,Manihot esculenta Crantz cv.SC No.22,Approval No.Re Pin Shen 2022001),a new cas-sava variety,was bred by artificial hybridization with cassava variety South China 5(SC5)as the female parent and the intro-duced Thai variety as the male parent to obtain F1 hybrid seeds,followed by seedling line tests,primary variety comparison tests,advanced variety comparison tests,regional trials and productive trials.The fresh root yield of this variety in regional trials and productive trials was 48.40 t·hm-2 and 39.30 t·hm-2,respectively,which was 31.56%and 20.59%higher than that of SC205,the main cultivated cassava variety in China;the starch content of tuberous roots was 26.33%and 26.10%,respectively,slightly higher than that of SC205(control);the cyanogenic glycoside content of fresh roots was 90.63 mg·kg-1,belonging to a medium-high cyanogenic glycoside variety.Comprehensive experimental results show that South China 22 is a new variety with excellent plant type,strong growth vigor,great yield potential,and well-coordinated tuberous root yield and starch con-tent,which is suitable for popularization and utilization in low-latitude areas of China,such as Hainan,Guangdong,and Gua-ngxi.In addition,the fingerprint profile of South China 22 was constructed based on the"presence-absence"polymorphism of transposable elements in the genome,providing a basis for variety identification and protection.关键词
木薯/杂交育种/鲜薯产量/淀粉率/株型Key words
cassava/hybrid breeding/fresh root yield/starch content/plant type分类
农业科技引用本文复制引用
卢诚,周新成,望嘉翔,李开绵,王文泉,陈新..木薯新品种华南22号的选育及指纹图谱构建[J].热带农业科学,2026,46(3):22-29,8.基金项目
海南省自然科学基金面上项目"基于转座子多态性的木薯指纹图谱的构建"(No.321MS0802) （No.321MS0802）
国家木薯产业技术体系品种改良岗(No.CARS-11) （No.CARS-11）
热带作物生物育种全国重点实验室2024年创新团队项目"木薯优异种质创制与抗逆机理解析"(No.NKLTCBCXTD07). （No.NKLTCBCXTD07）
