Principle component analysis indicated that KD, kernel thickness (KT), ear length (EL), rate of kernel production (RKP) and KD/ear semidiameter (EsemiD) determined the performance of KYE.

• 主成分分析结果表明，对单穗产量影响较大的性状有粒长、粒厚、穗长、出籽率和粒长／穗半径。