干旱地区农业研究
榦旱地區農業研究
간한지구농업연구
AGRICULTURAL RESEARCH IN THE ARID AREAS
2014年
6期
75-81,133
,共8页
孙建%乐美旺%饶月亮%颜廷献%颜小文%周红英
孫建%樂美旺%饒月亮%顏廷獻%顏小文%週紅英
손건%악미왕%요월량%안정헌%안소문%주홍영
芝麻%NaCl胁迫%基因型%耐盐性%反应差异%种质资源
芝痳%NaCl脅迫%基因型%耐鹽性%反應差異%種質資源
지마%NaCl협박%기인형%내염성%반응차이%충질자원
sesame%NaCl stress%genotype%salt tolerance%variation%sesame germplasm
通过芽期NaCl胁迫研究了不同浓度NaCl对芝麻种子成苗及幼苗生长的影响,分析了0.4% NaCl胁迫下不同基因型芝麻的反应差异。结果表明:(1)0~0.4%的NaCl浓度对芝麻种子成苗率影响较小,在NaCl浓度为0.6%~0.8%时表现为成苗率下降;芽长和简易活力指数均随NaCl浓度的增加而不断下降;根长和苗鲜重则因品种不同表现有异,部分品种随NaCl浓度增加呈先升后降趋势,部分品种则表现为不断下降趋势,不同芝麻品种表现差异较大。(2)所有参试品种在0.4%的NaCl浓度胁迫下在根长、芽长、苗鲜重、简易活力指数等测定指标上均表现出下降较为明显,认为0.4%的NaCl浓度胁迫可以作为芝麻种质资源耐盐性筛选鉴定的参考浓度。(3)聚类分析结果将39份种质资源明显聚为两类,即包含12份种质的耐盐类和包含27份种质的不耐盐类。(4)参试的改良品种(系)与地方种质耐盐性差异不大,地方种质的耐盐性指标的多样性指数要大于改良品种(系),即在NaCl胁迫下地方种质所表现的基因型差异要大于改良品种(系)。
通過芽期NaCl脅迫研究瞭不同濃度NaCl對芝痳種子成苗及幼苗生長的影響,分析瞭0.4% NaCl脅迫下不同基因型芝痳的反應差異。結果錶明:(1)0~0.4%的NaCl濃度對芝痳種子成苗率影響較小,在NaCl濃度為0.6%~0.8%時錶現為成苗率下降;芽長和簡易活力指數均隨NaCl濃度的增加而不斷下降;根長和苗鮮重則因品種不同錶現有異,部分品種隨NaCl濃度增加呈先升後降趨勢,部分品種則錶現為不斷下降趨勢,不同芝痳品種錶現差異較大。(2)所有參試品種在0.4%的NaCl濃度脅迫下在根長、芽長、苗鮮重、簡易活力指數等測定指標上均錶現齣下降較為明顯,認為0.4%的NaCl濃度脅迫可以作為芝痳種質資源耐鹽性篩選鑒定的參攷濃度。(3)聚類分析結果將39份種質資源明顯聚為兩類,即包含12份種質的耐鹽類和包含27份種質的不耐鹽類。(4)參試的改良品種(繫)與地方種質耐鹽性差異不大,地方種質的耐鹽性指標的多樣性指數要大于改良品種(繫),即在NaCl脅迫下地方種質所錶現的基因型差異要大于改良品種(繫)。
통과아기NaCl협박연구료불동농도NaCl대지마충자성묘급유묘생장적영향,분석료0.4% NaCl협박하불동기인형지마적반응차이。결과표명:(1)0~0.4%적NaCl농도대지마충자성묘솔영향교소,재NaCl농도위0.6%~0.8%시표현위성묘솔하강;아장화간역활력지수균수NaCl농도적증가이불단하강;근장화묘선중칙인품충불동표현유이,부분품충수NaCl농도증가정선승후강추세,부분품충칙표현위불단하강추세,불동지마품충표현차이교대。(2)소유삼시품충재0.4%적NaCl농도협박하재근장、아장、묘선중、간역활력지수등측정지표상균표현출하강교위명현,인위0.4%적NaCl농도협박가이작위지마충질자원내염성사선감정적삼고농도。(3)취류분석결과장39빈충질자원명현취위량류,즉포함12빈충질적내염류화포함27빈충질적불내염류。(4)삼시적개량품충(계)여지방충질내염성차이불대,지방충질적내염성지표적다양성지수요대우개량품충(계),즉재NaCl협박하지방충질소표현적기인형차이요대우개량품충(계)。
Effect of NaCl on seeding emergence and growth of sesame during germination was analyzed .The results indicated a modest effect on seeding emergence of NaCl treatment with the range of 0% ~0 .4% .Length of bud and sim-ple vigor index decreased continuously with increasing of concentration of NaCl .The root length and seeding fresh weight varied with sesame cultivars .Some increased first but decreased later with increasing concentration of NaCl ,while others decreased continuously .The 0 .4% NaCl treatment led to a significant decrease in root length ,length of bud ,seeding fresh weight and simple vigor index ,indicating that this could be used as reference concentration for screening and identi-fication of salt tolerance in sesame germplasm . The cluster analysis divided the 39 germplasm into two groups , 12 germplasm with salt tolerance and the others being salt sensitive .In addition ,there was minimal difference in salt toler-ance between newly released cultivars and local salt tolerance cultivar .