Panicle Anatomical Characteristics And Their Genetic Analysis

Taking 6 Japonica breeds which have different spike types and different spikeneck tubbiness as the water supply materials (1 999梸2OOO),studied diversity of rice spikeneck anatomized character among species ,correlations of paninle character and heterecious conduct of spikeneck character; between spikeneck tubbiness and large~ small vascular bundle number both emerged very positive significance correlation; there has significance or very significance correlation between large vascular bundle number and primary branch number. secondary branch number ,and only has very significance positive correlation between small vascular bundle number of spikeneck and secondary branch number, yet has no significance relationship with primary branch number ,large small vascular bundle in spikeneck emerge significance or very significance positive correlation with grains on secondary branch,and also has significance positive correlation with spike number;spikeneck tubbiness. large vascular bundle number~ small vascular bundle number and large small vascular bundle number of hybrid F1 among breeds are all more intervenint between parents than most combination,every averge number of F1 character approach averge number of parents,F2 has continuous variance,approach normal distribution,emerge quantitative character inheritance.