Application of corn gene KRN5 to increasing of corn yield

• Main Authors: ZHANG ZUXIN, ZHAO RAN, SHEN XIAOMENG
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2019
• Subjects: BEER; BIOCHEMISTRY; CHEMISTRY; COMPOSITIONS OR TEST PAPERS THEREFOR; COMPOSITIONS THEREOF; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL ORENZYMOLOGICAL PROCESSES; CULTURE MEDIA; ENZYMOLOGY; MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEICACIDS OR MICROORGANISMS; METALLURGY; MICROBIOLOGY; MICROORGANISMS OR ENZYMES; MUTATION OR GENETIC ENGINEERING; PROCESSES OF PREPARING SUCH COMPOSITIONS; PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS; SPIRITS; VINEGAR; WINE

The invention discloses application of a corn gene KRN5 to increasing of the corn yield. The gene is derived from corn QTL qKRN5b and located on a fifth chromosome of the corn, the gene number of thegene is Zm00001d013603, and the physical position of the sequence of the gene in a B73 reference genome V4 is chr5: 15168302-15200352. The locus can control the number of lines of ears, and has no significant influence on a plant type, a growth period and other ear traits; the gene is necessary for corn inflorescence morphogenesis and spikelet development, and when the gene is knocked out from thecorn, abnormal spikelet development can be caused, the spikelet number and the floret number are decreased, and consequently the yield can be decreased; and molecular markers SC36031 and K13 closelylinked with the QTL are developed and can be used for molecular marker-assisted selective breeding with the improved ear grain number. 本发明公开了玉米基因KRN5在提高玉米产量中的应用，该基因来源于玉米QTL，位于玉米第5染色体上，其基因编号为Zm00001d013603，其序列在B73参考基因组V4的物理位置为：c