Figure 1
From: QTL epistasis plays a role of homeostasis on heading date in rice

The network relationship among the four QTLs on heading date in rice. Hd3a-1 and Hd3a-2 were the heterozygote and homozygote on Hd3a, respectively. → promoting; \( \dashv \) inhibiting. Except that Hd1 and Ehd1 were independent, the other QTLs were related to each other, promoting or inhibiting.