Study on the Seed Setting Potential and Seed Setting Rate of Female Ear in Maize Inbred Lines
In this study,36 inbred lines were selected to investigate characteristics of seed setting by measur-ing seed setting-related traits,such as the number of florets,silks and kernels per ear in the female ear.The average number of florets was 579.9,with inbred line 831412-1 possessed the maximum floret number of 814.1.This indi-cated a great potential for seed setting in these inbred lines.Differentiated florets in the female ear outnumbered ker-nels per ear prominently,the average seed setting rate of each inbred line was only 75.3％,as 24.7％of the seed set-ting potential was not realized.Analysis of the constraints on seed setting potential showed that the seed setting rate decreased by an average of 15.2％due to the failure of silking out of bracts.Furthermore,9.5％of florets silked did not set,which led to the final average kernel number as 434.3.According to the analysis,silking and successful seed setting are two critical factors affecting yield potential.Enhancing floret silking rate is the key to increase the setting rate of maize inbred lines.
MaizeInbred lineKernels per earSeed setting characteristic
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