With the theme of “Improve drought resistance of rice, build a drought-sown rice cultivation system that saves fresh water resources, apply biotechnology to improve rice breeding efficiency, and expand the genetic basis of cultivarsâ€, the China National Rice Research Institute organized “Biotechnology†"International Conference on the Application of Drought Resistant Breeding in Rice". The conference was held on March 20-23, 2000 in Sanya City, Hainan Province. Foreign experts from the Rockefeller Foundation, the International Rice Research Institute, Texas Tech University and 26 agricultural colleges, research institutes, and science and technology in China 40 representatives from management, agricultural management, fund management and seed companies attended the meeting. The conference arranged the academic report of the conference, the academic discussion of the special topics and the visit and inspection of the upland rice planting site.
A total of nine experts from home and abroad made speeches on the conference, which covered the development of drought resistance and water saving cultivation in China's agriculture and rice, standardized test methods and facilities for identifying drought resistance in rice, and the integration and urgency of drought tolerance in crop genetic improvement. Molecular genetic strategies and methods for drought tolerance of rice; application of rice genome research, molecular markers, and application of transgenic technology; mineral nutrition and physiology of rice upland plantation; basic conditions and progress of upland rice breeding in China. Experts have fully expounded and analyzed the necessity and urgency of applying biotechnology to carry out research on rice drought resistance, necessary technical methods and research facilities, research status and progress.
Through the report of the conference and full discussion, the participants reached the following consensus: (1) The investment in drought resistance research of rice in China should be increased, and the yield, resistance and quality of upland rice should be increased to reach the equivalent level with rice; (2) The establishment of a system for the cultivation and cultivation of cultivated rice in large areas is a key technology for reducing rice irrigation water use, saving water resources, and reducing environmental pollution; (3) improving the yield, quality, and resistance of existing dry rice varieties in China Drought-resistance of existing high-yielding rice varieties is used as a breeding strategy; (4) Full use of advanced research techniques such as rice genome research, molecular markers, and genetic transformation to improve drought resistance, high yield, good quality, resistance to pests, herbicides, and other good traits (genes) ) Integrate; (5) Strengthen domestic and international exchanges and cooperation.
The meeting examined the planting sites of 20hm2 "Zhonghan No.1" and "Zhonghan No.3" arranged by the China National Rice Research Institute in Lingshui County, Hainan Province. The drought tolerance and comprehensive agronomic traits of the two upland rice varieties were recognized by the delegates. It is expected to reach a production level of 4500-6000 kg/hm2.
The meeting also exchanged and discussed the annual research progress of the "China Rice Molecular Breeding Program."
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