不同类型籼粳杂种F1的形态和生育期性状的表现

Performance of Morphology and Growth Season Charactersin Five Different Types of Indica/Japonica Hybrids

对早籼／早粳、早籼／中粳、早籼／晚粳、中籼／中粳和中籼／晚粳5种配组类型的籼粳杂种F1进行形态和生育期性状的考察，结果表明，作单季稻种植时，早籼／早粳杂种F1表现为抽穗过早，植株过矮，剑叶较短，营养生长不良。早籼／晚粳和中籼／晚粳杂种F1，抽穗偏迟，营养生长过旺。而早籼／中粳和中籼／中粳的杂种F1，抽穗较为适宜，前期的营养生长较好，中后期的株高、剑叶长等形态性状均较有利于籼粳交杂种超高产潜力的发挥，是较为理想的籼粳配组类型。

Five types of rice, early season indica rice (EI), medium season indica rice (MI), early season japonica rice (EJ), medium season japonica rice (MJ), late season japonica rice (LJ), were used to make five sets of incomplete diallel crosses including EI/EJ, EI/MJ, EI/LJ, MI/MJ, MI/LJ. The results showed as below ; The hybrids of EI/EJ were heading too early, plant height toolower and flag leaf length too short. The hybrids of EI/LJ and MI/LJ were heading too late and plant too high, But the MI/MJ and EI/MJ...