作物学报2011，Vol.37Issue(5)：755-763,9.DOI:10.3724/SP.J.1006.2011.00755
水稻两用核不育系繁殖基地计算机选择系统研制与应用
Development and Application of a Computer-aided Selection System for Thermo-sensitive Genic Male Sterile Rice Multiplying Site
摘要
Abstract
Great success has been achieved in the utilization of two-line hybrid rice in China. Nevertheless, the seed production of two-line hybrid rice is still a key technology that limited the extension of two-line hybrid rice on large scale. Seed multiplication of the thermo-sensitive genie male sterile (TGMS) rice, which with a narrow range of temperature for fertility restoration, is hard to be success by using the most common multiplying technologies currently. In order to improve the yield stability and security in TGMS rice multiplication, we developed a practical computer selection system for choosing an optimal multiplying site. This system using the java language was able to select suitable multiplying sites with optimal ecological factors which meet the requirement of the fertility sensitive stage (FSS) and heading-flowering stage (HFS) for TGMS rice multiplication. By using this computer-aided selection system, 24, 29, 20, 21, and 22 ecological areas were selected ,which were superior to the most common seed producing area, Sanya of Hainan province, where the suitable probabilities of FSS and HFS are 35.0％, 42.5％, 55.0％, 65.0％,and 75.0％ for the TGMS with the critical temperature of 22.0℃, 22.5℃, 23.0℃, 23.5℃, and 24.0℃, respectively, while the suitable probability of the optimal multiplying site selected by the computer-aided selection system were 83％, 93％, 100％, 100％,and 100％ in both FSS and HFS for TGMS with different critical temperature, respectively, showing much higher values than those in Sanya, Hainan Province. In 2010, we tried to produce the seed of C815S, a TGMS rice with the critical temperature of 22.0℃ in Baoshan, Yunnan Province selected by the computer-aided selection system. The grain yield reached 8 437.5 kg ha-1,and created the highest yield record of seed multiplication of the TGMS rice. These results suggested that the problems of unstable yield and low security for the TGMS rice seed multiplication should be solved by this computer aided selection system, and we believe the optimal multiplying site selected by the computer-aided selection system will provide a useful technical support for healthy and sustainable development in the two-line hybrid rice.关键词
水稻两用核不育系/繁殖基地选择/计算机程序/气象数据库Key words
Thermo-sensitive genic male sterile rice/ Multiplication site selecting/ Computer program/ Meteorological data引用本文复制引用
刘海,肖应辉,唐文邦,邓化冰,陈立云..水稻两用核不育系繁殖基地计算机选择系统研制与应用[J].作物学报,2011,37(5):755-763,9.基金项目
本研究由国家高技术研究发展计划(863计划)项目(2010AA101304)和科技部农业科技成果转化资金项目(2010GB2D200314)资助. （863计划）
