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灿灿妹

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烟子语茶: 金币+30, 翻译EPI+1 2015-06-13 21:32:27

The results showed that, it  described a general trend of descending in germination potential and vital index, the  germination rate and germination index increased prior to decreasing  with the increase of  Cu2+ concentration, and the maximum values were reached at 40 mg/L, which indicated that lower Cu2+ concentration could promote the germination rate and germination index,  had inhibitory effect at high concentration, when concentration reached 520 mg/L, the seed hardly germinated, even several luck seeds  germinated, its cotyledons, radicle and hypocotyl were showed the copper intoxicating phenomenon with red.
With  the increase of  Cu2+ concentration, the inhibiting effects to radicle and hypocotyl were gradually strengthened, and the  inhibiting effects to  hypocotyl were more obvious.

Key words:  Cu2+, stress,  pitaya, seed germination, germination rate, germination potential

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