Academician Li Zhensheng mainly bred a new distant hybrid variety of wheat and wheatgrass "Xiaoyan 6", which has become an important backbone parent of wheat breeding in China. Its characteristics are:

1. There are more than 50 derivative varieties, which have been promoted to more than 300 million acres and increased wheat production by more than 15 billion jins.

2. Using the "Xiao Yan Blue Grain" obtained from distant hybridization, blue grain monomer wheat and self-flowering null wheat system were bred with the seed blue as the genetic marker.

3. Multidisciplinary intersection and cooperation, research on improving the photosynthetic efficiency of wheat individuals and groups and optimizing the distribution of photosynthetic products was carried out.

4. Plan and organize the "Bohai Granary" project to isolate new salt-tolerant wheat varieties and strains.

Extended information

1. Systematically studied the distant hybridization of wheat and wheatgrass and bred the "Xiaoyan" series of varieties, and bred Xiaoyan No. 4, No. 5, and No. 6 High-yielding, disease-resistant, high-quality wheat varieties.

2. Breed new hybrid types such as wheatgrass octoploid, heteroadditional lines, heterotopic lines, and ectopic lines to combine wheatgrass's drought tolerance, dry and hot wind resistance, and resistance to various wheat diseases. Excellent genes were transferred to wheat and a new wheat chromosome engineering breeding system was established.

3. Using the blue endosperm gene of wheatgrass as a genetic marker trait, we created a blue-grain monomer wheat system for the first time, solving the long-standing problems of "univalent chromosome drift" and "chromosome number identification" in the wheat utilization process. There are two problems: "too much quantity".

4. Breed self-fertilizing deletion wheat, and use its deletion wheat to create a new method for rapid breeding of wheat out-generation lines - deletion backcrossing method, laying the foundation for wheat chromosome engineering breeding foundation.

Baidu Encyclopedia-Li Zhensheng