Fig. 1.
Pollen viability test. Abortive pollen grains of ZS97A could not be stained by 1% I2-KI, while fertile pollen grains of ZS97B could be stained. At least 3000 pollen grains collected from 30 anthers were examined and counted to get a statistical result of pollen viability.

Pollen viability test. Abortive pollen grains of ZS97A could not be stained by 1% I2-KI, while fertile pollen grains of ZS97B could be stained. At least 3000 pollen grains collected from 30 anthers were examined and counted to get a statistical result of pollen viability.

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