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褐飞虱是严重威胁水稻生产的害虫之一，给水稻安全生产带来了巨大挑战。收集、鉴定、创制高抗褐飞虱水稻种质资源与培育抗褐飞虱水稻新品种，被认为是防治褐飞虱绿色、经济、有效的途径。通过水稻种质资源的广泛收集与鉴定，发掘出高抗褐飞虱新种质R892。抗性评价结果显示R892接种褐飞虱若虫12 d后死苗率仅4.76%；分子标记筛选与基因组分析发现，R892携带高抗褐飞虱新位点，同时聚合多个主效抗性基因。此外，利用低镉香型抗稻瘟病优质骨干恢复系R1126与抗褐飞虱供体亲本R892杂交，结合褐飞虱抗性鉴定，创制出强优势高抗褐飞虱恢复系R1126-892，为多抗水稻品种选育提供了宝贵的种质资源。
Abstract：The brown planthopper(BPH) is one of the pests seriously threatening rice production, posing a huge challenge to the safe production of rice. Collecting, identifying, and creating rice germplasm resources with high resistance to BPH and breeding new BPH-resistant rice varieties are regarded as green, economical, and effective approaches for BPH prevention and control. Through extensive collection and identification of rice germplasm resources, this study discovered a new germplasm R892 with high resistance to BPH. Resistance evaluation results showed only 4.76% of R892 seedlings died after 12 days of BPH nymph infestation. Molecular marker screening and genomic analysis revealed that R892 carried a new locus with high resistance to BPH and pyramided multiple major resistance genes. In addition, a high-quality backbone restorer line R1126 with low cadmium accumulation, aroma, and rice blast resistance was crossed with the BPH-resistant donor parent R892. Combined with the identification of BPH resistance, a heterotic restorer line R1126-892 with high resistance to BPH was created, providing valuable germplasm resources for the breeding of multi-resistant rice varieties.
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基本信息:
DOI：10.16267/j.cnki.1005-3956.20251201.237
中图分类号:S511
引用信息:
[1]柳道明,郭俊成,张树霞,等.水稻高抗褐飞虱新种质R892的发掘与育种利用[J].杂交水稻().DOI:10.16267/j.cnki.1005-3956.20251201.237.
基金信息:
湖南省自然科学基金青年基金(2025JJ60223,2026JJ 40023); 湖南省农业科技创新资金(2024CX74,2024CX 08,2025CX36); 国家自然科学基金青年基金(32502008)
2026-08-24
2026-08-24
2026-08-24