Abstract:

Thermo-photo sensitive two-line hybrid wheat was the main way to utilizing wheat heterosis. The objectives of this study were to improve the yield, quality and resistance ability of common wheat utilizing wheat heterosis. ‘Mianzamai168’ (MTS-1×MR168) was bred by using the traditional breeding technologies of ‘four synchronize and one intercross’. It was characteristic of high resistance to stripe rust and powdery mildew, high yield, excellent in quality, early maturity, big and quadrate spike, more kernels per spike, high spike rate and wide adaptability, and so on. It was the first hybridized wheat that was authorized by National Crop Variety Registration Committee and Crop Variety Registration Committee of Sichuan Province in 2007. The paper summarized the breeding process, cultivation techniques, hybridized seed production techniques and the parents seed reproduction techniques of ‘Mianzamai168’, and introduced the results of regional test and demonstration of ‘Mianzamai168’. ‘Mianzamai168’ was an important achievement of wheat heterosis utilization in China. It shows a good prosperity in production application.