Relationship Between Indica-Type Frequency And Yield And Quality Of Indica And Japonica Hybrid

There are obvious differences in the cultivars of Asian cultivated rice.The main quality traits of Japonica rice are better than that of Indica rice,and the variation of Indica and Japonica rice can produce rich variation,which lays the genetic variation basis for breeding high quality and high yield varieties.Previous genetic factors among rice quality subspecific difference conducted in-depth research,this study Sasanishiki(Japonica)and Habataki(Indica)backcross inbred lines(BIL)populations as test materials,the use of support(Fi)and its relationship with yield and quality traits,and provide genetic basis for high quality and high yield breeding of Indica and Japonica rice.The results showed that the distribution of amylopectin was the highest.The results show:1,The BIL population was constructed by hybridization with Indica and Japonica rice.The distribution of Fi was between 0.028 and 0.390,with an average of 0.137.The distribution of Indica markers on each chromosome was More uniform.The Indica and Japonica traits of Indica and Japonica rice were introduced at the same time.Therefore,Japonica traits could be further determined by Japonica rice standard.On the other hand,the Indica and Japonica crosses could be more suitable for the study Effects of Indica Blood on Quality Traits of Northern Japonica Rice.2,Sasanishiki yield traits were much better than those of Habataki and BILs,and the Indica frequency was negatively correlated with effective panicle number,seed setting rate,1000-grain weight,biological yield,economic yield,theoretical yield and economic coefficient.The yield and actual yield were significant or extremely significant,and the Indica frequency was positively correlated with the number of grains per spike but did not reach a significant level.The negative correlation between Indica frequency and brown rice rate,milled rice rate and whole milled rice rate was negatively correlated.The negative correlation between Indica frequency and brown rice rate was extremely significant.The Indica frequency was positively correlated with the chalkiness rate and chalkiness degree,but it did not reach significant level and the correlation coefficient was very small.The Indica frequency was positively correlated with the aspect ratio,but it did not reach a significant level.3,Habataki grain length to width ratio was significantly higher than Sasanishiki,other processing quality and appearance quality differences did not reach a significant level,BILs group Indica frequency in addition to brown rice rate was significantly negative correlation,and other processing and appearance quality correlation not obvious.The AAC,Fb3 and RS of Habataki were significantly higher than those of Sasanishiki,while Fa was significantly lower than that of the latter,and the correlation between the Indica frequency and the above starch characteristics was not significant.HabatakiPKV,HPV and CPV were significantly higher than those of Sasanishiki,and the Indica frequency of BILs population was only negatively correlated with PKV.4,Sasanishiki rice appearance,taste and comprehensive evaluation was significantly better than Habataki,analysis of BILs group Indica frequency and cooking taste quality relationship found that Indica frequency and appearance,taste and comprehensive evaluation were significantly negatively correlated,especially with the comprehensive evaluation Of the correlation coefficient of-0.933,the determination coefficient of up to 0.870.It can be seen that the BILs population in this study,the higher the frequency of Indica rice appearance and taste worse,the lower the comprehensive evaluation.The results showed that the results were of great significance to the extensive application of Indica and Japonica rice in northern China,especially in northeast Japonica rice.