河南农业科学
河南農業科學
하남농업과학
JOURNAL OF HENAN AGRICULTURAL SCIENCES
2015年
5期
26-30
,共5页
赵君霞%马耕%岳鹏莉%王强%刘甘霖%谢旭东%王晨阳
趙君霞%馬耕%嶽鵬莉%王彊%劉甘霖%謝旭東%王晨暘
조군하%마경%악붕리%왕강%류감림%사욱동%왕신양
小麦%氮素胁迫%干旱胁迫%生长发育%氮代谢
小麥%氮素脅迫%榦旱脅迫%生長髮育%氮代謝
소맥%담소협박%간한협박%생장발육%담대사
Triticum aestivum%nitrogen stress%drought stress%growth and development%nitrogen meta-bolism
以小麦品种豫麦49-198和周麦22为材料,在水培条件下研究了氮素和干旱胁迫对小麦幼苗生长及生理指标的影响。结果表明,单一氮素和干旱胁迫均显著降低小麦株高和地上部干质量,而根干质量和根冠比升高,双重胁迫( N0+PEG)的影响最大。在2种胁迫下,根和叶片中的硝酸盐含量均显著降低,氮胁迫的影响大于干旱胁迫。叶片和根部的可溶性蛋白质和游离氨基酸含量在氮胁迫下下降,干旱胁迫下显著升高。叶片GS活性在氮胁迫下降低,但在干旱胁迫下不同基因型存在差异:豫麦49-198叶片GS活性增加,而周麦22降低。
以小麥品種豫麥49-198和週麥22為材料,在水培條件下研究瞭氮素和榦旱脅迫對小麥幼苗生長及生理指標的影響。結果錶明,單一氮素和榦旱脅迫均顯著降低小麥株高和地上部榦質量,而根榦質量和根冠比升高,雙重脅迫( N0+PEG)的影響最大。在2種脅迫下,根和葉片中的硝痠鹽含量均顯著降低,氮脅迫的影響大于榦旱脅迫。葉片和根部的可溶性蛋白質和遊離氨基痠含量在氮脅迫下下降,榦旱脅迫下顯著升高。葉片GS活性在氮脅迫下降低,但在榦旱脅迫下不同基因型存在差異:豫麥49-198葉片GS活性增加,而週麥22降低。
이소맥품충예맥49-198화주맥22위재료,재수배조건하연구료담소화간한협박대소맥유묘생장급생리지표적영향。결과표명,단일담소화간한협박균현저강저소맥주고화지상부간질량,이근간질량화근관비승고,쌍중협박( N0+PEG)적영향최대。재2충협박하,근화협편중적초산염함량균현저강저,담협박적영향대우간한협박。협편화근부적가용성단백질화유리안기산함량재담협박하하강,간한협박하현저승고。협편GS활성재담협박하강저,단재간한협박하불동기인형존재차이:예맥49-198협편GS활성증가,이주맥22강저。
Yumai 49-198 and Zhoumai 22 were used as materials to study the effects of nitrogen and drought stress on growth,development and physiological indexes of winter wheat in Hoagland’ s nutrient solution. The results indicated that nitrogen and water stress for five days could significantly decrease the plant height and shoot dry weight,but increase the root dry weight and root-shoot ratio,of which the com-bination stress of nitrogen and water stress( N0+PEG) had the largest influence. In the two stresses,the nitrate content of leaves and roots reduced significantly,and the effect of nitrogen was greater. The con-tents of soluble protein and free amino acids decreased significantly under nitrogen stress,but increased dramatically under water stress. GS activity of leaves was reduced greatly under nitrogen stress, while it showed difference between the two wheat genotypes under drought stress, Yumai 49-198 increased and Zhoumai 22 decreased.