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ÑÌ×ÓÓï²è
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 177.4
- É¢½ð: 750
- ºì»¨: 11
- Ìû×Ó: 629
- ÔÚÏß: 381Сʱ
- ³æºÅ: 2656986
- ×¢²á: 2013-09-15
- ÐÔ±ð: MM
- רҵ: ÖÐÒ©ÖÆ¼Á
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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 ллÀ² |

4Â¥2015-05-31 21:39:36
²Ó²ÓÃÃ
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 68
- Ó¦Öú: 135 (¸ßÖÐÉú)
- ¹ó±ö: 1.097
- ½ð±Ò: 14467.1
- É¢½ð: 3921
- ºì»¨: 102
- ɳ·¢: 3
- Ìû×Ó: 2121
- ÔÚÏß: 396.8Сʱ
- ³æºÅ: 1783324
- ×¢²á: 2012-04-27
- ÐÔ±ð: GG
- רҵ: »·¾³¹¤³Ì
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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The effect of Cu2+ stress on germination of pitaya seed Using pitaya seed as research material, 6 Cu2+ concentrations (20¡¢40¡¢80¡¢160¡¢320¡¢520 mg/L) and control treatment were set to thermostasis culture in experimental temperature £¨25+2¡æ£©. For discussing the influencing causes of Cu2+ stress on germination of pitaya seed, the germination rate, germination potential, vital index, germination index and radicle and hypocotyl growth of pitaya seed germination were observed and analyzed ueder different Cu2+ concentrations. |

2Â¥2015-05-31 09:55:39
²Ó²ÓÃÃ
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 68
- Ó¦Öú: 135 (¸ßÖÐÉú)
- ¹ó±ö: 1.097
- ½ð±Ò: 14467.1
- É¢½ð: 3921
- ºì»¨: 102
- ɳ·¢: 3
- Ìû×Ó: 2121
- ÔÚÏß: 396.8Сʱ
- ³æºÅ: 1783324
- ×¢²á: 2012-04-27
- ÐÔ±ð: GG
- רҵ: »·¾³¹¤³Ì
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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ÑÌ×ÓÓï²è: ½ð±Ò+30, ·ÒëEPI+1 2015-06-13 21:32:27
ÑÌ×ÓÓï²è: ½ð±Ò+30, ·ÒëEPI+1 2015-06-13 21:32:27
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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 |

3Â¥2015-05-31 10:26:56














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