河南农业科学
河南農業科學
하남농업과학
JOURNAL OF HENAN AGRICULTURAL SCIENCES
2014年
9期
52-55
,共4页
铝胁迫%花生%根系生长%保护酶活性%脯氨酸含量%细胞质膜透性
鋁脅迫%花生%根繫生長%保護酶活性%脯氨痠含量%細胞質膜透性
려협박%화생%근계생장%보호매활성%포안산함량%세포질막투성
aluminum stress%peanut%root growth%protective enzyme activity%proline content%cytoplasmic membrane permeability
为明确花生（Arachis hypogaea L．）根系对酸性土铝毒的反应，采用水培法研究了不同浓度铝条件下花生幼苗根系生长和生理特性的变化。结果表明：低浓度铝（0.5～1.0 mmol/L）可促进花生幼苗根系生长，至铝胁迫处理第9天，0.5、1.0 mmol/L铝胁迫处理根系长度分别较 CK（不添加铝）提高了9.6％、16.6％，根系鲜质量分别较 CK 提高了2.5％、8.2％；而高浓度铝（≥2.0 mmol/L）明显抑制花生根系的生长，至铝胁迫处理第9天，8.0 mmol/L铝胁迫处理根系长度、根系鲜质量分别较CK降低45.0％、26.5％。低浓度铝（0.5～1.0 mmol/L）可增强根系 SOD、POD活性，降低根系细胞质膜透性，对花生生长有一定的促进作用；高浓度铝（≥2.0 mmol/L）降低了根系SOD、POD活性，增大了根系细胞质膜透性，抑制花生根系的生长发育。
為明確花生（Arachis hypogaea L．）根繫對痠性土鋁毒的反應，採用水培法研究瞭不同濃度鋁條件下花生幼苗根繫生長和生理特性的變化。結果錶明：低濃度鋁（0.5～1.0 mmol/L）可促進花生幼苗根繫生長，至鋁脅迫處理第9天，0.5、1.0 mmol/L鋁脅迫處理根繫長度分彆較 CK（不添加鋁）提高瞭9.6％、16.6％，根繫鮮質量分彆較 CK 提高瞭2.5％、8.2％；而高濃度鋁（≥2.0 mmol/L）明顯抑製花生根繫的生長，至鋁脅迫處理第9天，8.0 mmol/L鋁脅迫處理根繫長度、根繫鮮質量分彆較CK降低45.0％、26.5％。低濃度鋁（0.5～1.0 mmol/L）可增彊根繫 SOD、POD活性，降低根繫細胞質膜透性，對花生生長有一定的促進作用；高濃度鋁（≥2.0 mmol/L）降低瞭根繫SOD、POD活性，增大瞭根繫細胞質膜透性，抑製花生根繫的生長髮育。
위명학화생（Arachis hypogaea L．）근계대산성토려독적반응，채용수배법연구료불동농도려조건하화생유묘근계생장화생리특성적변화。결과표명：저농도려（0.5～1.0 mmol/L）가촉진화생유묘근계생장，지려협박처리제9천，0.5、1.0 mmol/L려협박처리근계장도분별교 CK（불첨가려）제고료9.6％、16.6％，근계선질량분별교 CK 제고료2.5％、8.2％；이고농도려（≥2.0 mmol/L）명현억제화생근계적생장，지려협박처리제9천，8.0 mmol/L려협박처리근계장도、근계선질량분별교CK강저45.0％、26.5％。저농도려（0.5～1.0 mmol/L）가증강근계 SOD、POD활성，강저근계세포질막투성，대화생생장유일정적촉진작용；고농도려（≥2.0 mmol/L）강저료근계SOD、POD활성，증대료근계세포질막투성，억제화생근계적생장발육。
In order to clarify the response of the peanut root to aluminum toxicity in acidic soil,the root growth and physiological characteristics of peanut (Arachis hypogaea L.)seedlings under different concentrations of aluminum were studied in this paper by hydroponics culture.The results showed that the growth of peanut seedling roots under the low concentrations of aluminum(0.5-1.0 mmol/L)was promoted at first nine days after aluminum treatment,the root length in 0.5,1.0 mmol/L aluminum treatment was improved by 9.6% and 16.6% respectively compared with CK,the root fresh weight in 0.5 ,1.0 mmol/L aluminum treatment was increased by 2.5% and 8.2% respectively compared with CK.The growth of peanut root in high concentrations of aluminum(≥2.0 mmol/L)was significantly inhibited.The root length and the root fresh weight in 8.0 mmol/L aluminum treatment were reduced by 45.0% and 26.5%respectively compared with CK at the first nine days after aluminum treatment.The SOD,POD activities of root in low concentrations of aluminum(0.5-1.0 mmol/L)were enhanced,and the root cell membrane permeability decreased,so the growth of peanut root was promoted.However, the SOD,POD activities of root in high concentrations of aluminum(≥2.0 mmol/L)decreased, and the root cell membrane permeability increased,so the growth of peanut root was inhibited.
