FIGURE 1.

Crossing design for distinguishing gametic and zygotic selection and the maternal effects for SD. Emian22 (A) was crossed with 3-79 (B) to produce two types of F₁ plants, these F₁ hybrid plants were self-pollinated to generate F₂ populations, (E3)F₂ (C) and (3E)F₂ (D). Four male-segregating backcross populations, E(E3) (E), E(3E) (F), 3(E3) (G), and 3(3E) (H), and four female-segregating backcross populations, (3E)E (I), (E3)E (J), (3E)3 (K), and (E3)3 (L), were developed. Smaller circles indicate pollen on stigma and larger circles indicate ovules. The colors of patterns outside of the two types of circles are indicated as the cytoplasmic backgrounds, red is indicated for Emian22, and blue is indicated for 3-79.