[Genetic effects of mineral elements of Fe, Zn, Mn and P in black pericarp rice grains].
Complete diallel crosses with seven varieties of black pericarp rice were conducted in one year to analyze the genetic effects on main mineral elements of Fe, Zn, Mn and P contents in kernels of parents and their F1S and F2S, using the full genetic model including triploid endosperm, cytoplasmic and maternal effects on quantitative traits of seeds in cereal crops. The results indicated that the contents of all the four mineral elements were controlled by seed direct genetic effects, maternal genetic effects as well as by cytoplasmic effects. The seed direct genetic effects were more important than the maternal genetic effects for Fe, Zn, Mn contents, and seed direct additive effects constituted a major part of their genetic effects, whereas seed direct additive, maternal additive and dominant effects formed the main part in the inheritance of P content. The heritabilities of seed direct effects of the 4 mineral element contents were all highly significant. The estimate values of narrow heritabilites of seed direct genetic effects were high for Fe, Zn and Mn contents, while those of seed and maternal effects were intermediate for P content. Therefore, more attention should be paid to the single plant selection and single grain selection based on the seed mineral element contents of hybrid offspring.
Zhang
M W
MW
Biotechnical Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China.
Du
Y Q
YQ
Peng
Z M
ZM
He
C X
CX
D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D012275:Oryza / Q000737:chemistry / Q000235:genetics*; D010758:Phosphorus / Q000032:analysis*; D015032:Zinc / Q000032:analysis*
D010758:Phosphorus; D008345:Manganese; D007501:Iron; D015032:Zinc