摘要
以垦粳8号为供试品种,通过温室试验,研究了不同浓度外源氨基酸(L-亮氨酸、L-天门冬氨酸、L-谷氨酸、L-精氨酸)对水稻秧苗生长及相关生理指标的影响。结果表明,添加外源亮氨酸(4 g/L)、天门冬氨酸(1.00 g/L)和谷氨酸(0.9 g/L)能够提高秧苗干物质积累量、叶绿素含量、渗透物质含量及抗氧化酶活性,降低丙二醛含量,促进秧苗根系生长,提高秧苗素质。秧苗株高分别增加55.14%、57.25%和37.90%,茎基宽分别增加10.53%、12.78%和42.85%,总干物质量分别增加66.91%、42.75%和38.66%,总叶绿素含量分别增加64.41%、20.85%和1.84%。外源精氨酸拌土处理在本研究浓度范围内可显著抑制秧苗根系生长和地下部干物质量积累。说明外源亮氨酸、天门冬氨酸和谷氨酸调控效果显著,尤其是4 g/L的外源亮氨酸作用效果突出,在今后培育高素质水稻秧苗的生产实践中可作为调控秧苗生长的技术手段。
With the test material of Kenjing 8,the effects of different exogenous amino acids(L-leucine,L-aspartic acid,L-glutamic acid,L-arginine)on rice seedlings growth and related physiological indicators were studied through greenhouse experiment.The results showed that,the addition of exogenous leucine(4 g/L),aspartic acid(1.00 g/L)and glutamic acid(0.9 g/L)could increase the accumulation of dry matter content,chlorophyll content,osmotic substance content,increase antioxidant enzyme activities and reduce malondialdehyde content,further promote root growth of seedlings,and improve the quality of seedlings.Specifically,the plant height of seedlings increased by 55.14%,57.25%and 37.90%,respectively,the stem base width increased by 10.53%,12.78%and 42.85%,respectively,the total dry matter mass increased by 66.91%,42.75%and 38.66%,respectively,and the total chlorophyll content increased by 64.41%,20.85%and 1.84%,respectively.The exogenous arginine mixed soil treatment showed that the root growth and underground dry matter accumulation of seedlings were significantly inhibited in the concentration range of seedlings.This study showed that exogenous leucine,aspartic acid and glutamic acid had significant regulatory effects.In particular,4 g/L exogenous leucine had an outstanding effect,which could be used as a technical means to control seedling growth in production of cultivating high-quality rice seedlings.
作者
刘繁超
方淑梅
王庆燕
王晗昕
牛娟娟
梁喜龙
Liu Fanchao;Fang Shumei;Wang Qingyan;Wang Hanxin;Niu Juanjuan;Liang Xilong(College of Agriculture,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China;Heilongjiang Plant Growth Regulator Engineering Technology Research Center,Daqing 163319,Heilongjiang,China)
出处
《作物杂志》
北大核心
2024年第2期71-79,共9页
Crops
基金
黑龙江八一农垦大学博士启动金(XDB-2016-01)
黑龙江八一农垦大学“三横三纵”支持计划(2018年度平台支持计划)。
关键词
氨基酸
水稻
秧苗素质
农艺性状
抗逆性
Amino acid
Rice
Seedling quality
Agronomic traits
Resistance
