With regard to most agronomic traits, the breeding line P14 developed in Yunnan performed high positive additive effect, and the varieties P12 and P8 derived from northern China had high negative additive effects.

• 云南选育出的品系P14在大多数农艺性状上表现较高的正向加性效应,而北方品种P12和P8在多数农艺性状上表现较高的负向加性效应。