我国小麦抗BYDV遗传育种研究进展

本文论证了小麦抗 BYDV育种的重要性 ,阐明了自 5 0年代发现 BYDV以后 ,科学家们首先将抗BYDV基因由小麦近缘种导入普通小麦 ,育成双二倍体 ,再作为中间材料培育成异附加系和异代换系 ,进而利用 Ph突变体、组织培养、分子原位杂交等途径 ,育成易位系材料 ,最终应用于抗病育种的过程 ;明确了不同偃麦草与不同小麦杂交 ,导入的抗 BYDV基因位点不同 ,从而扩大了抗源的多样性 ,同时也引起了遗传规律的差异 ;提出了现阶段抗病育种中存在的问题

Research Progress on the Heredity of BYDV-resistance in Wheat Breeding of China

Angle that the original is developed through the scientific knowledge. Demonstrate the importance that the resisted BYDV of wheat breeding. Clarify to discover the BYDV since the 1950,over a long period of time unremitting after scientists effort,first of all transfer the BYDV - resistance gene from the close fringe variety of wheat to common wheat, and breed amphidiploid, and go on breeding to hetero-addition line and hetero-substisution line. Second to breed translocation line by Ph's abrupt gene or tissue culture or in situ hybridization and so on. Finally use to the disease-resistant breeding. Cleared the variety of resisted source and the difference of genetic regularity because the crossing of different avena sativa and wheat caused the difference of BYDV-resistance-gene site. Pointed out the great accomplishment that resisted BYDV bred. Proposed the problem and direction in the disease-resistant breeding of wheat.