Behavior of Gene Controlling Iron Accumulation in F1 Rice Seed

Abstract

Efficiency of selection procedure in the breeding program for improving Iron (Fe) accumulation in rice seed depends on the understanding in the behavior of genes controlling the trait. The phenotype of F₁ hybrid could identify the behavior and further, could predict the response of selection of the genotype higher in iron accumulation ability. In this investigation, the hybrid F₁ was produced using KaoDokMali 105 (white rice) as a female parent and Kumdoisaket (purple rice) as a male parent. Iron with O-phenanthroline method with the dry ashing sample of the whole seed and the decorticated seed was used in the nutritional analysis, reading absorbent value through spectrophotometer at wavelength 510 nm. And compare the value to standard curve for predicting the amount of iron accumulation. The results show that, the purple rice (Kumdoisaket) accumulated lower amount than the white rice (KaoDok Mali 105) both in the whole seed and in the decorticated seed. The iron accumulation of the F₁ seed exhibited the amount valued in between the values of the two parents, but statistically non significant differed from the mid-parent value. However, since, the value of F₁ moved closely to the value of the higher parent, indicates the additive action with partial dominance behavior of genes controlling the trait.