Tracking and Monitoring Leaf Development, Coupling Law and Regulation Techniques during Flowering Period of Hybrid Foxtail Millet (<i>Setaria italica</i> (L.) P. Beauv.) Parental Lines

The determining factor of Setaria italica (L.) P. Beauv. is the coupling its flowering stage and outcrossing rate which leads to low unstable seed yields in self-pollinated foxtail millet hybrids thereby limits their large-scale application. In this study, Datong 27, 29 gu 83 were screened identified through meticulous observations pollination habitats. High exposure rate, degree plump stigma are good factors accept foreign pollen. 27 have some additional characteristics, such as long filaments exposed full anthers that contain a large amount We transformed into series stigma-exposed sterile lines easily accepted exotic New restorer with powder exhibited quick recovery, improved parental lines’ heterosexual characteristics. By tracking monitoring leaf development new lines, law was determined control measures formulated. These ensured encounter one another during stage. utilizing fertilizer water, vitality female stigma, scattered loosening time prolonged, increased hybrid from 1500 3000 kg/hm2. findings helpful resolving technical problems production restricted propagation supporting future applications.