Gene Effects for Grain Yield and its Component Characters in Rice (Oryza Sativa L.)
Five generations (P1, P2, F1, F2 and F3) of six rice crosses were grown in a randomised block design for estimating the nature and magnitude of gene effects for grain yield and its component characters. The scaling tests indicated that the scales ‘C’ and ‘D’ were significant for all the six characters in all the crosses studied. Gene effects were found to be cross specific. The results indicated the importance of duplicate dominant epistasis for number of productive tillers, number of filled grains and 100 grain weight. For biomass, grain yield and harvest index complementary recessive epistasis was found to be important.
Objective To investigate the relationship between FcγRⅢB gene polymorphisms and susceptibility to chronic periodontitis in Chinese patients. Methods DNA samples with buccal swabs were collected from 63 severe CP patients, 103 initial to moderate CP patients, and 80 healthy controls in Chinese Han nationality. The FcγRⅢB gene polymorphisms were analyzed with PASA. Results There were no significant genotype distribution differences of FcγRⅢB between any two of the three subject groups. Conclusion Further study was needed since we did no find the relationship between the FcγRⅢB gene polymorphism and periodontitis in this present study.