中国农业科学 ›› 2026, Vol. 59 ›› Issue (19): 4221-4234.doi: 10.3864/j.issn.0578-1752.2026.19.003

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

291份甘蔗种质资源黑穗病抗性评价及抗病种质发掘

普新援1,2(), 马云飞3, 赵俊1,2, 赵丽萍1,2, 赵兴东3, 胡鑫1,2, 昝逢刚1,2, 刘家勇1,2, 杨丽华3, 夏红明1,2, 陆鑫1,2, 饶席兵1,2, 唐思琪1,2, 白亚东3, 张静1,2, 任生林1,2, 赵培方1,2()   

  1. 1 热带作物生物育种全国重点实验室, 昆明 650000
    2 云南省农业科学院甘蔗研究所/云南省甘蔗遗传改良重点实验室, 云南开远 661699
    3 元江哈尼族彝族傣族自治县种植业发展服务中心, 云南玉溪 653300
  • 收稿日期:2026-02-06 接受日期:2026-04-07 出版日期:2026-10-01 发布日期:2026-10-10
  • 通信作者:
    赵培方,E-mail:
  • 联系方式: 普新援,E-mail:puxinyuan1231@163.com。
  • 基金资助:
    国家糖料产业技术体系(CARS-16); 兴滇英才支持计划(yfgrc202430); 2025年云南省农作物品种推广后补助项目(2510609000472); 中央引导地方科技发展资金项目(202407AB110007); 科技人才与平台计划(202205AM070001)

Evaluation of Smut Resistance and Screening of Resistant Germplasm in 291 Sugarcane Accessions

PU XinYuan1,2(), MA YunFei3, ZHAO Jun1,2, ZHAO LiPing1,2, ZHAO XingDong3, HU Xin1,2, ZAN FengGang1,2, LIU JiaYong1,2, YANG LiHua3, XIA HongMing1,2, LU Xin1,2, RAO XiBing1,2, TANG SiQi1,2, BAI YaDong3, ZHANG Jing1,2, REN ShengLin1,2, ZHAO PeiFang1,2()   

  1. 1 National Key Laboratory for Biological Breeding of Tropical Crops, Kunming 650000
    2 Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences/Yunnan Provincial Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan 661699, Yunnan
    3 Yuanjiang Hani, Yi and Dai Autonomous County Planting Industry Development Service Center, Yuxi 653300, Yunnan
  • Received:2026-02-06 Accepted:2026-04-07 Published:2026-10-01 Online:2026-10-10

摘要:

【目的】黑穗病是影响全球甘蔗生产的主要病害,筛选抗病种质对甘蔗抗病育种至关重要。系统评价不同来源甘蔗种质对黑穗病的抗性水平,筛选高抗黑穗病种质,为抗病机制解析提供研究材料,为抗病育种提供优异亲本资源。【方法】以291份国内外甘蔗种质为材料,于2020—2021年在云南蔗区黑穗病发生最为普遍的蔗区元江哈尼族彝族傣族自治县,以1年新植和1年宿根(“作物类型”)进行田间试验,以田间收集的黑穗病混合冬孢子(浓度5×106个/mL)为接种菌株,设置人工接种和自然感病区(“处理”),调查各种质发病情况并进行统计分析,根据发病率评价抗性并分级,筛选高抗及抗病种质,并对比不同来源甘蔗种质对黑穗病的抗性水平。【结果】从291份种质中共筛选出20份抗黑穗病种质,占比6.87%,其中包含4份高抗种质(占1.37%),CP72-3709表现免疫,CP96-1252、FR93-910和云蔗02-2332表现高抗;在其余的种质中,14份(4.81%)表现中抗(MR)、74份(25.43%)表现中感(MS)、134份(46.05%)表现感病(S)、49份(16.84%)表现高感(HS)。统计分析表明,发病率在“处理”间、“作物类型”间、基因型间、“处理”与基因型互作间差异极显著(P<0.001),人工接种发病率(32.16%)极显著高于自然感病(18.29%),宿根发病率(35.29%)极显著高于新植(15.24%),表明甘蔗黑穗病发病率受处理方式、作物类型和基因型的显著影响;广义遗传力为0.812,表明发病率变异主要受遗传因素影响;不同来源种质的发病率存在差异,其中,法国种质的发病率最低。【结论】在云南黑穗病高发的元江蔗区,从291份甘蔗抗黑穗病种质中筛选出20份抗病种质构成一个有价值的抗性基因库。其中,免疫种质CP72-3709可作为优异抗源用于黑穗病抗病分子机制解析、抗性基因挖掘和抗黑穗病甘蔗品种的改良;高抗及抗病种质CP96-1252、FR93-910、云蔗02-2332、CP89-2143、POJ2878等可作为抗病育种的核心亲本。

关键词: 甘蔗, 黑穗病, 种质资源, 抗性评价, 优异抗源

Abstract:

【Objective】Smut is a devastating disease affecting global sugarcane production. Screening for resistant germplasm is crucial for sugarcane disease-resistant breeding. This study aimed to systematically evaluate the resistance levels of sugarcane germplasm from different origins to smut, identify highly resistant germplasm, provide research materials for elucidating resistance mechanisms, and supply excellent parental resources for disease-resistant breeding.【Method】From 2020 to 2021, 291 sugarcane germplasm accessions from domestic and international sources were used. The trials included a plant crop and a ratoon crop (“crop type”) were conducted in Yuanjiang Hani, Yi and Dai Autonomous County, where the smut incidence is the highest in Yunnan province. A mixture of smut teliospores collected from the field (concentration: 5×106 spores/mL) served as the inoculum. Treatments consisted of artificial inoculation and a natural infection area (“treatment”). Disease occurrence in each germplasm was investigated and statistically analyzed. Resistance was evaluated and graded based on incidence, and highly resistant and resistant germplasm were screened, and compared the resistance level among the various sources.【Result】A total of 20 smut-resistant germplasms were screened from 291 germplasms, accounting for 6.87% of the evaluated germplasm, including 4 high-resistant germplasms (1.37%). CP72-3709 showed immunity, and CP96-1252, FR93-910 and Yunzhe02-2332 showed high resistance. Among the remaining germplasms, 14 (4.81%) showed moderately resistant (MR), 74 (25.43%) showed moderately susceptible (MS), 134 (46.05%) showed susceptible (S), and 49 (16.84%) showed highly susceptible (HS). Statistical analysis indicated that disease incidence differed highly significantly (P<0.001) among “treatments”, “crop types”, genotypes, and the interaction between “treatment” and genotype. demonstrating that sugarcane smut incidence is significantly influenced by treatment method, crop type, and genotype. Statistical analysis revealed extremely significant differences (P<0.001) in disease incidence among treatments, crop types, genotypes, and the treatment × genotype interaction. The disease incidence in the artificial inoculation zone (32.16%) was extremely significantly higher than that in the natural infection zone (18.29%), while the incidence in ratoon crops (35.29%) was extremely significantly higher than that in plant cane (15.24%), indicating that sugarcane smut incidence is significantly influenced by inoculation method, crop type, and genotype. The broad-sense heritability was 0.812, suggesting that the variation in disease incidence is primarily governed by genetic factors. Differences in disease incidence were also observed among germplasms from different sources, with germplasms originating from France exhibiting the lowest incidence.【Conclusion】This research obtained the smut resistance of 291 sugarcane germplasms in the highest smut incidence area Yuanjiang county. The 20 resistant germplasms screened in this study collectively constitute a valuable resistance gene pool, providing elite parental resources for resistance breeding. The immune germplasm CP72-3709 can serve as an excellent resistance source for investigating the molecular mechanisms underlying smut resistance, mining resistance genes, and improving smut-resistant sugarcane cultivars. The highly resistant and resistant genotypes, such as CP96-1252, FR93-910, YZ02-2332, CP89-2143, and POJ2878, can be utilized as core parents in resistance breeding programs.

Key words: sugarcane, smut, germplasm resources, resistance evaluation, superior resistant germplasm