摘要
分析了Ｈａｓｈｉｋａｌｍｉ，Ｄｕｌａｒ和９０ＩＲＢＢＮ４４三个抗源品种对水稻细菌性条斑病Ｓ－１０３菌株和白叶枯病Ｐ１菌系的抗性遗传。结果表明，Ｈａｓｈｉｋａｌｍｉ和Ｄｕｌａｒ对Ｓ－１０３的抗性均由２对隐性基因所控制，９０ＩＲＢＢＮ４４则带有１对隐性抗性基因。经等位性测定表明，Ｈａｓｈｉｋａｌｍｉ和Ｄｕｌａｒ的２对基因中至少有１对是等位的，但它们与９０ＩＲＢＢＮ４４的１对基因均不等位。３个抗源品种对Ｐ１的抗性都受１对隐性基因控制，该基因与ｘａ－５等位。连锁遗传分析表明，Ｈａｓｈｉｋａｌｍｉ和Ｄｕｌａｒ对Ｓ－１０３的２对抗细条病基因中的１对与ｘａ－５相连锁，而９０ＩＲＢＢＮ４４的１对抗性基因与ｘａ－５呈独立遗传。本文还就开展水稻抗细菌性条斑病育种进行了讨论。
The inheritance of the resistance of three resistant rice varieties, Hashikalmi , Dular and 90IRBBN44, to S- 103 isolate of bacterial leaf streak and P1 strain of bacterial leaf blight was analysed. The results indicated that Hashikalmi and Dular had two recessive resistant genes to S- 1 03, and 90IRBBN44 had one recessive gene. According to allelism test , at least one of the two genes of Hashikalmi and Dular was allelic,but they were nonallelic to that of 90IRBBN44. All three resistant varieties possessed a recessive resistant gene to P1 , which was allelic to xa-5. One of the two genes of Hashikalmi and Dular resistant to S-1 03 was link to xa-5, but the gene of 90IRBBN44 was independent of xa-5. Breeding for resistance to bacterial leaf streak in rice was discussed.
基金
浙江省自然科学基金
关键词
水稻
细菌性条斑病
白叶枯病
抗性遗传
抗病育种
Bacterial leaf streak of rice, Bacterial leaf blight, Inheritance of resistance, Breeding for resistance
