Differences existed between different organs of the same variety, showing root (2.7830 mg·kg −1 ) > stem (0.8387 mg·kg −1 ) > leaf (0.2637 mg·kg −1 ) > grain (0.1077 mg·kg −1 ); differences existed between the same organs of different varieties, showing high accumulation > low accumulation; highly significant differences existed between different organs of different varieties.
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