| 摘要: |
| 通过普通小麦与六倍体小黑麦杂交、多元回交和花培纯合，将小黑麦抗条锈基因导入普通小麦，获得了12个在成株期对小麦条锈病菌流行小种免疫的新种质，其中8个新种质在苗期对流行小种高抗。研究普通小麦与六倍体小黑麦的杂交特性结果表明，六倍体小黑麦×普通小麦与普通小麦×六倍体小黑麦两种杂交方式都有较高的杂交结实率，但前者种子发育好，出苗率高，后者种子胚乳发育不良，出苗率低。用普通小麦进行回交，可获得一定的结实率，种子出苗率较好。 |
| 关键词: 普通小麦 小黑麦 抗条锈 基因导入 回交 |
| DOI： |
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| 基金项目:国家973项目(G2000016202)；国家863项目(2001AA241037) |
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| Development of wheat new germplasm with stripe rust resisitanceⅠ.Transfer of gene resistant to stripe rust new races from hexaploid Tr |
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| Abstract: |
| Transfer of gene resistant to stripe rust new races from hexaploid Triticale into T.aestivum by cross-fertilization between hexaploid Triticale and T.aestivum as well as multiple back-crossing was conducted.Twelve new germplasm with stripe rust new race resistance were developed and evaluated in experiments under field and greenhouse conditions.Eight new germplasm had better resistant to stripe rust new races in both seedling and adult plants.Crossing characteristic between T.aestivum and hexaploid Triticale was studied,the result showed that the percentage of seed set in reciprocal cross between T.aestivum and hexaplid Triticale was high,but the percentage of seedling in reciprocal cross was very significantly different.Percentage of seedling in hexaploid Triticale×T.aestivum was higher because endosperm developed very well than that in T.aestivum×hexaploid Triticale because endosperm developed bad.Many seeds and seedlings were obtained by back crossing. |
| Key words: T.aestivum hexaploid Tritica stripe rust resistance transfer of gene back-crossing |
