Study on Grain Filling Characteristics of High-Yielding Maize Cultivars
Wu Qiuping
Guo Xinping
Han Chengwei
Wang Huifang
Kong Xiaomin
Abstract：In this experiment, the grain filling characteristics of three high -yielding maize cultivars were studied with ZD958 as control.The Logistic growth equation was used for the fitting of grain filling process(R2 >0.99).The results showed that the grain filling process of the four cultivars showed a single peak curve consistently.Compared to ZD958, the grain filling rate of DK517, DH605 and JH5 decreased more slowly after the peak.The grain filling rate and dry matter accumulation were different in different grain growth period between different cultivars.The maximum and average grain filling rate and the grain weight at the stage with the maximum grain filling rate were all higher than those of ZD958;but in the active grain filling period, the performance of the three cultivars were same with that of ZD958.Therefore, enhancing the grain filling rate, especially in the rapidly increasing phase of grain weight, could accelerate the whole grain filling progress to shorten the duration of late grain filling,and maybe contribute to reaching a higher yield potential of maize hybrids.
Keywords：MaizeHigh-yielding cultivarGrain filling characteristicsYield
Publication Date：2015-04-02
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 30-33 )