Abstract:

In order to improve breeding and cultivation level and efficiency of conventional indica glutinous rice, the effect and relationship between yield traits of 40 early indica glutinous rice and 61 late indica glutinous rice new strain and variety were studied by correlation and path analysis, and combines breeding practice explore the major direction of indica glutinous rice breeding about high-yield. The results showed that: the yield of early indica glutinous rice were significantly or extremely significantly positively correlated with the yield traits besides growth period and seed setting rate, the grain number per spike between plant height and panicle length had reached extremely significantly and significant levels respectively, the effective panicle number contributed most to the yield (46.41%), the grains per spike ranked next (34.16%); the yield of late indica glutinous rice were extremely significantly and significant positively correlated with grains per spike and effective panicle number respectively, significant correlation between plant height and grains per spike, panicle length also, the grains per spike contributed most to the yield (38.80%), the effective panicle number ranked next (33.80%). According to the test results and breeding practice, put forward that the major aspect of early indica glutinous rice breeding should focus on increasing effective panicle number based on a certain 1000-grain weight was, and increase grains per spike by improving plant height and panicle length; emphasized on increasing grains per spike based on a certain effective panicle number was the major aspect of late indica glutinous rice breeding, and increased grains per spike and panicle length by improving plant height.