干旱胁迫对马齿苋种子萌发和幼苗生长的影响
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摘要
以马齿苋种子为试验材料,用不同浓度PEG溶液对马齿苋种子进行处理,并采用人工控水法对其盆栽幼苗进行处理.结果表明:随着PEG溶液浓度的增大,马齿苋种子的发芽率、发芽势、发芽指数呈逐渐下降的趋势.随着土壤含水量的减小,马齿苋幼苗的株高、鲜重、干重均呈逐渐下降的趋势,根长先上升后下降,在60%的土壤相对含水量处理下,达到最长.丙二醛(MDA)含量、过氧化物酶(POD)活性、可溶性糖含量、脯氨酸含量均呈逐渐上升的趋势.叶片相对含水量、叶绿素含量、可溶性蛋白含量均呈逐渐下降趋势.
The seeds of purslane(Portulaca oleracea L.)were treated with different concentration of PEG solution,and the pot seedlings were treated under manual water control.The results showed that the germination ratio,potential and index had declined with the increase of PEG concentration.With the decrease of water in soil,the plant height,fresh weight and dry weight of the seedlings all dropped accordingly,while the length of the root increased at first and went down latter.Root length reached the maximum under 60%relative water content in soil.The content of malondialdehyde,soluble sugar and proline and peroxidase(POD)activity gradually rose up.The content of water in leaves,chlorophyll content,soluble protein content showed the trend of gradual decline.
The seeds of purslane(Portulaca oleracea L.)were treated with different concentration of PEG solution,and the pot seedlings were treated under manual water control.The results showed that the germination ratio,potential and index had declined with the increase of PEG concentration.With the decrease of water in soil,the plant height,fresh weight and dry weight of the seedlings all dropped accordingly,while the length of the root increased at first and went down latter.Root length reached the maximum under 60%relative water content in soil.The content of malondialdehyde,soluble sugar and proline and peroxidase(POD)activity gradually rose up.The content of water in leaves,chlorophyll content,soluble protein content showed the trend of gradual decline.
引文
[1]杨子仪.野生型和栽培型马齿苋种子的萌发特性和抗逆性比较[D].南京:南京师范大学,2014.
[2]降云峰,赵晋锋,马宏斌,等.作物干旱研究进展[J].中国农学通报,2013,29(03):1-5.
[3]Haar M J,Fennimore S A.Evaluation of integrated practices for common purslane(Portulaca oleracea)management in lettuce(Lactuca sativa)[J].Weed Technology,2003,17:229-233.
[4]徐亚莉.不同栽培条件对两种类型马齿苋生长和品质的影响[D].南京:南京师范大学,2015.
[5]孙景宽,张文辉,张洁明,等.种子萌发期4种植物对干旱胁迫的响应及其抗旱性评价研究[J].西北植物学报,2006,(09):1811-1818.
[6]张辉,刘相博,刘存芳.马齿苋开发利用现状及前景展望[J].现代农业科技,2009,(21):113.
[7]王乐,张玉霞,沈祥军.PEG模拟干旱处理对马齿苋种子萌发的影响研究[J].中国园艺文摘,2015,31(10):26-28.
[8]Fandrich L,Mallory-Smith C A.Factors affecting germination of jointed goatgrass(Aegilops cylindrica)seed[J].Weed Science,2006,54:677-684.
[9]Ei Siddig M A,Baenziger S,Dweikat I,et al.Preliminary screening for water stress tolerance and genetic diversity in wheat(Triticum aestivum L.)cultivars from Sudan[J].Journal of Ge-netic Engineering and Biotechnology,2013,11(2):87-94.
[10]杨楠.干旱及铅胁迫对主要造林树种种子萌发与幼苗生长的影响[D].陕西:西北农林科技大学,2012.
[11]李田,孙景宽,田家怡,等.干旱胁迫对杠柳光合特性及抗氧化酶活性的影响[J].西北植物学报,2010,30(12):2466-2471.
[12]李涛,毛艳萍.PEG模拟干旱对菘蓝种子萌发和幼苗生长的影响[J].种子科技,2017,35(11):116-117.
[13]徐振朋,宛涛,蔡萍,等.PEG模拟干旱胁迫对罗布麻种子萌发及生理特性的影响[J].中国草地学报,2015,37(05):75-80.
[14]杨彩宏,冯莉,岳茂峰.恶性杂草马齿苋(Portulaca?oleracea)种子萌发特性的研究[J].植物保护,2009,35(01):62-65.
[15]金蕊.C4植物马齿苋和狗牙根应答干旱高温双重胁迫机理的研究[D].北京:中国科学院研究生院(武汉植物园),2016.
[16]韩娜.干旱胁迫对华北落叶松种子萌发与幼苗生长的影响[D].山西:山西农业大学,2015.
[17]汪磊,谭美莲,严明芳,等.PEG模拟干旱对胡麻种子萌发及幼苗生长的影响[J].干旱地区农业研究,2011,29(06):227-232.
[2]降云峰,赵晋锋,马宏斌,等.作物干旱研究进展[J].中国农学通报,2013,29(03):1-5.
[3]Haar M J,Fennimore S A.Evaluation of integrated practices for common purslane(Portulaca oleracea)management in lettuce(Lactuca sativa)[J].Weed Technology,2003,17:229-233.
[4]徐亚莉.不同栽培条件对两种类型马齿苋生长和品质的影响[D].南京:南京师范大学,2015.
[5]孙景宽,张文辉,张洁明,等.种子萌发期4种植物对干旱胁迫的响应及其抗旱性评价研究[J].西北植物学报,2006,(09):1811-1818.
[6]张辉,刘相博,刘存芳.马齿苋开发利用现状及前景展望[J].现代农业科技,2009,(21):113.
[7]王乐,张玉霞,沈祥军.PEG模拟干旱处理对马齿苋种子萌发的影响研究[J].中国园艺文摘,2015,31(10):26-28.
[8]Fandrich L,Mallory-Smith C A.Factors affecting germination of jointed goatgrass(Aegilops cylindrica)seed[J].Weed Science,2006,54:677-684.
[9]Ei Siddig M A,Baenziger S,Dweikat I,et al.Preliminary screening for water stress tolerance and genetic diversity in wheat(Triticum aestivum L.)cultivars from Sudan[J].Journal of Ge-netic Engineering and Biotechnology,2013,11(2):87-94.
[10]杨楠.干旱及铅胁迫对主要造林树种种子萌发与幼苗生长的影响[D].陕西:西北农林科技大学,2012.
[11]李田,孙景宽,田家怡,等.干旱胁迫对杠柳光合特性及抗氧化酶活性的影响[J].西北植物学报,2010,30(12):2466-2471.
[12]李涛,毛艳萍.PEG模拟干旱对菘蓝种子萌发和幼苗生长的影响[J].种子科技,2017,35(11):116-117.
[13]徐振朋,宛涛,蔡萍,等.PEG模拟干旱胁迫对罗布麻种子萌发及生理特性的影响[J].中国草地学报,2015,37(05):75-80.
[14]杨彩宏,冯莉,岳茂峰.恶性杂草马齿苋(Portulaca?oleracea)种子萌发特性的研究[J].植物保护,2009,35(01):62-65.
[15]金蕊.C4植物马齿苋和狗牙根应答干旱高温双重胁迫机理的研究[D].北京:中国科学院研究生院(武汉植物园),2016.
[16]韩娜.干旱胁迫对华北落叶松种子萌发与幼苗生长的影响[D].山西:山西农业大学,2015.
[17]汪磊,谭美莲,严明芳,等.PEG模拟干旱对胡麻种子萌发及幼苗生长的影响[J].干旱地区农业研究,2011,29(06):227-232.