| 田华林,韦蓉静,聂怡玫,牛涛,莫亮团,王穆琼,罗兴雨.航天搭载刺梨种子苗期形态变异初步研究[J].中国南方果树,2025,54(4): |
| 航天搭载刺梨种子苗期形态变异初步研究 |
| A Preliminary Study on Morphological Variation in Seedlings of Spaceflight-Exposed Rosa roxburghii Seeds |
| 投稿时间：2025-03-28 修订日期：2025-05-16 |
| DOI：10.13938/j.issn.1007-1431.20250160 |
| 中文关键词: 刺梨 航天搭载 苗期 形态变异 诱变育种 |
| 英文关键词:Rosa roxburghii spaceflight-induced mutation breeding seedling stage morphological variation mutagenesis breeding |
| 基金项目:2023年黔南州科技计划项目“黔南州刺梨产业基地提质增效关键技术研究”（黔南科合社字〔2023〕7号） |
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| 中文摘要: |
| 对“神舟十五号”飞船搭载的贵农5号和贵农7号刺梨种子开展了育苗试验，结果表明，航天搭载对刺梨种子发芽率、成苗率影响不显著，但SP1代部分植株产生了形态变异，获得变异植株5株，其中贵农5号产生变异植株4株，贵农7号产生变异植株1株，变异率分别为1.4%和0.38%。这些形态变异主要表现为小叶形状、大小、叶面色泽等叶片形态的变异和皮刺着生数量与着生位置的变异。 |
| 英文摘要: |
| A seedling cultivation experiment was conducted on Rosa roxburghii seeds (cultivars GuiNong 5 (GN5) and GuiNong 7 (GN7)) carried by the Shenzhou-15 spacecraft through spaceflight-induced mutation breeding. The results showed:Germination Rate: The germination and seedling rates of Rosa roxburghii seeds are not significantly affected by spaceflight treatment.Morphological Variations in SP1 Generation:Mutation Frequency: 5 variant plants were obtained, with 4 from GN5 (1.4% mutation rate) and 1 from GN7 (0.38% mutation rate).Key Variation Traits:Leaf Morphology: Alterations in leaflet shape, size, and blade coloration;Thorn Characteristics: Variations in the number and distribution of epidermal prickles.This study preliminarily validates that space mutagenesis can induce phenotypic diversity in Rosa roxburghii, providing germplasm resources for subsequent selection of elite mutants. |
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