Analysis Of Heterosis And Genetic Model Of Main Characters In Brassica Napus

The experiment was a research on the four different generation which are P1,P2,F1 and F2 of Qianyou 14,which is an excellent hybrid.There were some analysis of the heterosis and genetic model of nine quantity characters to obtain the most suitable model,genetic effects value and the heritability of each characters.1 HeterosisAmong the nine kind of the quantity characters of the Qianyou 14,on the index of heterosis,the figure of the character of the ramification high is less than 1,the figure of the plant high and the length of main anthotaxy are more than 1.1,the others are between;on the middle-parent heterosis,just the figure of the character of the ramification high is negative,the figure of the plant high and the length of main anthotaxy are more than 0.1,the others are between;on the over-parent heterosis,there are four figure are negative,which are the ramification high,the number of legumen on main anthotaxy,the legumen length and the weight of the thousand-seed,the figure of the plant high and the length of main anthotaxy are more than 0.1,the others are between;on the over low-parent heterosis,just the figure of the ramification high is negative,the length of main anthotaxy and the number of legumen on main anthotaxy are more than 0.2,the plant high's is more than 0.1,the others are between;finally,on the ratio,which describes how does the fade,the figure of the ramification high,the length of main anthotaxy and the legumen length are negative,the weight of the thousand-seed's is more than 10%,the others are between.2 The inheritance model of the quantitative trait2.1 the inheritance of the plant height was controlled as the model D, the additive gene-effect was 21.855,the dominance gene-effect was 2.155,the heritability of the major-gene was 0.6%,the heritability of the polygene was 52.8%.2.2 the inheritance of the ramification height was controlled as the model D,the additive gene-effect was -18.165,the dominance gene-effect was 5.405,the heritability of the major-gene was 62.7%,the heritability of the polygene was 11.9%.2.3 the inheritance of the ramification number was controlled as the model E,the additive gene-effect were -2.8526 and -1.3378,the dominance gene-effect were -3.2766 and -0.1031,the heritability of the major-gene was 69.8%,the heritability of the polygene was 8.5%. 2.4 the inheritance of the length of the main anthotaxy was controlled as the model E-1,the additive gene-effect were 4.5820 and 4.5819,the dominance gene-effect were 1.1130 and 16.9936,the heritability of the major-gene was 43.5%,the heritability of the polygene was 7.6%.2.5 the inheritance of the number of legumen on main anthotaxy was controlled as the model E-2,the additive gene-effect were 21.6861 and 5.8603,the dominance gene-effect were -1.6333 and 5.1076,the heritability of the major-gene was 53.2%,the heritability of the polygene was 8.2%.2.6 the inheritance of the number of legumen of whole plant was controlled as the model E-2,the additive gene-effect were -23.9859 and -0.1453,the dominance gene-effect were -0.7514 and -0.0548,the heritability of the major-gene was 56.7%,the heritability of the polygene was 4.7%.2.7 the inheritance of the length of legumen was controlled as the model E-2,the additive gene-effect were -1.1372 and -0.0320,the dominance gene-effect were -0.9073 and -0.0255,the heritability of the major-gene was 28.0%,the heritability of the polygene was 16.1%.2.8 the inheritance of the number of fruit in each legumen was controlled as the model E,the additive gene-effect were -1.5491 and -0.4826,the dominance gene-effect were 0.2837 and -0.2743,the heritability of the major-gene was 25.7%,the heritability of the polygene was 1.5%.2.9 the inheritance of the weight of thousand-seed was controlled as the model E-1,the additive gene-effect were 0.6400 and 0.2064,the dominance gene-effect were 0.5453 and -0.4408,the heritability of the major-gene was 74.9%,the heritability of the polygene was 0.8%.