Identification method capable of increasing purity of three-line hybrid rice seed production and purity of hybrid seeds

• Main Authors: WANG PING, XIANG YUEWU, ZHANG ZHIYONG, BAI YULU, CAI PINGZHONG, PU ZHIGANG, ZHANG ZHIXIONG, WANG MINXIA
• Format: Patent
• Language: Chinese; English
• Published: 13.07.2016
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; NEW PLANTS OR PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING

The invention discloses an identification method capable of increasing purity of three-line hybrid rice seed production and purity of hybrid seeds. A sterile line of three-line hybrid rice that has grain husks, leaf veins and stalks with red brown-marked properties and that carries a single recessive gene serves as a female parent and is combined with a restorer line without the red brown-marked properties to produce seeds; after female parent sterile line young ears differentiate to enter the sixth stage, the grain husks, the leaf veins and the stalks present the red brown-marked properties; rice plants without the red brown-marked properties are removed before or after the head sprouting of the sterile line, so as to obtain hybrid seeds with the red brown-marked properties, so that the purity of the hybrid seeds is increased; after being harvested, the seeds are sowed and transplanted; statistics are made to a proportion of plants having the leaf veins and the stalks with the red brown-marked properties to