摘要
分析了NaCl胁迫下碱茅幼苗中15种游离氨基酸的消长规律。结果表明在适境条件下碱茅地上部脯氨酸占总游离氨基酸的10.53％,盐逆境下脯氨酸稳定地增加。随着盐浓度的升高,碱茅地上部中丝氨酸增加倍数较大,精氨酸含量降低或略有增加;其地下部中丝氨酸含量增加甚小,精氨酸含量在一定盐度范围内增加较大。此外NaCl胁迫下,处理1,2及3植株地上部中蛋白质含量分别下降了3.46％,7.55％和7.04％,淀粉含量分别下降了3.53％,11.81％和12.35％;其地下部中蛋白质含量分别增加了4.15％,2.04％和2.18％。处理1和2淀粉含量增加了1.45％和2.93％,处理3淀粉含量下降了2.92％。
The growth and decline law of fifteen free amino acids was analyzed at above--ground and under ground parts of alkaligrass seedling under the salt stress. The results showed that the content of Pro was 10.53% of total free amino acide at above--ground parts under the suitable condition. Under the severe condition, Pro increased stablely. With the increase of salt concentration, Set content increased, but Arg content decreased or just a little increased at above--ground parts of alkaligrass. Few Set content increase was found, but Arg content increased highly in some salt concentration extent at under--ground parts. Otherw/se, under salt stress, in treatment 1, 2, 3 decreased content of protein by 3.46%, 7. 55%0 and 7.04%, and decreased content of starch by 3.53%, 11.81% and 12.35% respectively, at the aboveground parts; increased content of protein by 4.15% ,2.04% and 2. 18%, increased content of starch by 1.45% and 2.93% in treatment 1.2, but decreased content of that by 2.92% in treatment 3 at underground parts.
出处
《草业学报》
CSCD
1993年第4期40-43,共4页
Acta Prataculturae Sinica
基金
国家自然科学基金
甘肃省自然科学基金
关键词
碱茅
脯氨酸
氨基酸
氯化钠
Puccinellia tenuiflora, NaCl stress, Pro, Ser,Arg
