Fig. 2

Materials of Oryza.sativa collected in the study. Leaves, sheath, stamen, pistil, lemma and palea of booting stage, embryo, endosperm and lemma and palea of mature stage were collected respectively. Panicle of rice in the flowering stage can be enlarged to exhibit stamen, pistil, lemma and palea of booting stage, while panicle of rice in the mature stage can be enlarged to exhibit the seed which composed of embryo, endosperm and lemma and palea of mature stage