中国麻业科学
中國痳業科學
중국마업과학
Plant Fiber Sciences in China
2015年
5期
239-245
,共7页
陶爱芬%陈娴娴%祁建民%方平平%林荔辉%徐建堂%张立武%吴建梅%林培清
陶愛芬%陳嫻嫻%祁建民%方平平%林荔輝%徐建堂%張立武%吳建梅%林培清
도애분%진한한%기건민%방평평%림려휘%서건당%장립무%오건매%림배청
菜用黄麻%硒%脯氨酸%生长%生理特性
菜用黃痳%硒%脯氨痠%生長%生理特性
채용황마%서%포안산%생장%생리특성
edible jute%selenium%proline%growth%physiological characteristics
为明确外源硒及脯氨酸(Pro)对菜用黄麻生长和生理特性的影响,本研究以新型菜用黄麻品种福农1号为材料,测定了在水培液中添加不同浓度的硒(0、0.2、0.5、1.0、2.5、5.0 mg/L)与脯氨酸(50μmol /L)对菜用黄麻苗期生长、叶绿素、渗透调节物质及抗氧化酶活性的影响。结果表明:(1)外源硒浓度≤0.5 mg/L 时,能促进菜用黄麻的株高、根长、株重及根重,而外源硒浓度≥2.5 mg/L 时则会对其生长产生抑制和毒害作用;浓度为0.2 mg/L 的硒最有利于菜用黄麻福农1号苗期的生长发育;硒浓度较低时,外源脯氨酸具有促进菜用黄麻生长的作用,而硒浓度较高时,脯氨酸可缓解硒对菜用黄麻生长的抑制。(2)外源硒可促进菜用黄麻中叶绿素的合成,亦能促进游离脯氨酸、可溶性糖和可溶性蛋白等渗透调节物质的形成,并且随硒浓度增加呈现先升高后降低的变化趋势;硒浓度为0.5和1.0 mg/L 时,可最大程度地促进菜用黄麻叶绿素和渗透调节物质的合成;外源脯氨酸亦具有促进菜用黄麻叶绿素和渗透调节物质合成的功能,并且对高浓度硒造成的毒害有一定的缓解作用。(3)中低浓度的硒(0.5和1.0 mg/L)明显促进菜用黄麻超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)和谷胱甘肽过氧化物酶(GSH -Px)等抗氧化酶的活性,而高浓度硒(5.0 mg/L)抑制菜用黄麻抗氧化酶的活性;随外源硒浓度增加,菜用黄麻抗氧化酶活性呈先升高后降低的趋势;外源脯氨酸能促进菜用黄麻抗氧化酶的活性,硒浓度为2.5和5.0 mg/L 时,添加脯氨酸的处理 POD、SOD 和 CAT 活性高于未添加者,表明脯氨酸具有增强菜用黄麻抵抗力和自由基清除的能力,从而可以缓解高浓度硒的胁迫。以上结论对菜用黄麻这一新型蔬菜的生产具有重要的理论和实践意义。
為明確外源硒及脯氨痠(Pro)對菜用黃痳生長和生理特性的影響,本研究以新型菜用黃痳品種福農1號為材料,測定瞭在水培液中添加不同濃度的硒(0、0.2、0.5、1.0、2.5、5.0 mg/L)與脯氨痠(50μmol /L)對菜用黃痳苗期生長、葉綠素、滲透調節物質及抗氧化酶活性的影響。結果錶明:(1)外源硒濃度≤0.5 mg/L 時,能促進菜用黃痳的株高、根長、株重及根重,而外源硒濃度≥2.5 mg/L 時則會對其生長產生抑製和毒害作用;濃度為0.2 mg/L 的硒最有利于菜用黃痳福農1號苗期的生長髮育;硒濃度較低時,外源脯氨痠具有促進菜用黃痳生長的作用,而硒濃度較高時,脯氨痠可緩解硒對菜用黃痳生長的抑製。(2)外源硒可促進菜用黃痳中葉綠素的閤成,亦能促進遊離脯氨痠、可溶性糖和可溶性蛋白等滲透調節物質的形成,併且隨硒濃度增加呈現先升高後降低的變化趨勢;硒濃度為0.5和1.0 mg/L 時,可最大程度地促進菜用黃痳葉綠素和滲透調節物質的閤成;外源脯氨痠亦具有促進菜用黃痳葉綠素和滲透調節物質閤成的功能,併且對高濃度硒造成的毒害有一定的緩解作用。(3)中低濃度的硒(0.5和1.0 mg/L)明顯促進菜用黃痳超氧化物歧化酶(SOD)、過氧化物酶(POD)、過氧化氫酶(CAT)和穀胱甘肽過氧化物酶(GSH -Px)等抗氧化酶的活性,而高濃度硒(5.0 mg/L)抑製菜用黃痳抗氧化酶的活性;隨外源硒濃度增加,菜用黃痳抗氧化酶活性呈先升高後降低的趨勢;外源脯氨痠能促進菜用黃痳抗氧化酶的活性,硒濃度為2.5和5.0 mg/L 時,添加脯氨痠的處理 POD、SOD 和 CAT 活性高于未添加者,錶明脯氨痠具有增彊菜用黃痳牴抗力和自由基清除的能力,從而可以緩解高濃度硒的脅迫。以上結論對菜用黃痳這一新型蔬菜的生產具有重要的理論和實踐意義。
위명학외원서급포안산(Pro)대채용황마생장화생리특성적영향,본연구이신형채용황마품충복농1호위재료,측정료재수배액중첨가불동농도적서(0、0.2、0.5、1.0、2.5、5.0 mg/L)여포안산(50μmol /L)대채용황마묘기생장、협록소、삼투조절물질급항양화매활성적영향。결과표명:(1)외원서농도≤0.5 mg/L 시,능촉진채용황마적주고、근장、주중급근중,이외원서농도≥2.5 mg/L 시칙회대기생장산생억제화독해작용;농도위0.2 mg/L 적서최유리우채용황마복농1호묘기적생장발육;서농도교저시,외원포안산구유촉진채용황마생장적작용,이서농도교고시,포안산가완해서대채용황마생장적억제。(2)외원서가촉진채용황마중협록소적합성,역능촉진유리포안산、가용성당화가용성단백등삼투조절물질적형성,병차수서농도증가정현선승고후강저적변화추세;서농도위0.5화1.0 mg/L 시,가최대정도지촉진채용황마협록소화삼투조절물질적합성;외원포안산역구유촉진채용황마협록소화삼투조절물질합성적공능,병차대고농도서조성적독해유일정적완해작용。(3)중저농도적서(0.5화1.0 mg/L)명현촉진채용황마초양화물기화매(SOD)、과양화물매(POD)、과양화경매(CAT)화곡광감태과양화물매(GSH -Px)등항양화매적활성,이고농도서(5.0 mg/L)억제채용황마항양화매적활성;수외원서농도증가,채용황마항양화매활성정선승고후강저적추세;외원포안산능촉진채용황마항양화매적활성,서농도위2.5화5.0 mg/L 시,첨가포안산적처리 POD、SOD 화 CAT 활성고우미첨가자,표명포안산구유증강채용황마저항력화자유기청제적능력,종이가이완해고농도서적협박。이상결론대채용황마저일신형소채적생산구유중요적이론화실천의의。
Taking new edible jute variety “Funong No.1 ”as test material,this paper studied the effects of different concentrations (0,0.2,0.5,1.0,2.5,5.0 mg/L)of exogenous selenium and pro-line (50 μmol /L)on the growth,chlorophyll synthesis,osmoticum content and activities of antioxidant enzymes of edible jute seedlings.The results showed:1)Exogenous selenium at the concentration lower than 0.5 mg/L increased the plant height,root length,fresh weight of seedlings and roots of edible jute.However,high selenium concentrations of 2.5 and 5.0 mg/L resulted in damage and inhibition to the seedlings of edible jute.Among those treatments,0.2 mg/L exogenous selenium got the best improving effect to growth of the edible jute seedlings.Exogenous proline combined with lower selenium concentra-tion improved the seedlings growth,and it had protective effect on the seedlings while the selenium con-centration was higher.2)Exogenous selenium increased the chlorophyll synthesis and the content of free proline,soluble sugar and soluble protein.The chlorophyll and osmoticum firstly increased and then de-creased with the increasing of selenium concentration.Selenium concentrations of 0.5 and 1.0 mg/L had the best effects.Exogenous proline also increased the content of chlorophyll and osmoticum of edible jute seedlings,and it also relieved the damage by high concentration selenium.3)The activities of antioxi-dant enzymes increased rapidly and then decreased while the selenium concentration increased.Exoge-nous selenium at the concentrations of 0.5 and 1.0 mg/L remarkably enhanced the activity of superoxide dismutase (SOD),peroxidase (POD),catalase (CAT)and glutathione peroxidase (GSH -Px).How-ever,5.0 mg/L exogenous selenium decreased the antioxidant content.When exogenous selenium at the concentration of 2.5 and 5.0 mg/L,exogenous proline increased the content of SOD,POD and CAT,in-dicating it enhanced the ability of stress -resistance and of oxyradical removing under heavy selenium stress.The results of this paper are important to the production of edible jute at both theoretical and prac-ticable level.