The fork arm is gradually formed by the fierce rivalry and apical dominance of lateral branches after the main gib is damaged to wither or break. 紅松杈干是主梢受害枯死或斷折后，經(jīng)側枝的激烈競爭和頂端優(yōu)勢的驅使下逐漸邢成的。
Fruit size appears to be controlled by multiple genes without complete dominance. 果實(shí)大小應由多基因控制，沒(méi)有完全顯性的現象。
Additive variance was higher than dominance variance, which indicates quantitative inheritance. 加性的變異高于顯性的變異，表明是數量遺傳。
