摘要
为了提高辣椒种子的发芽率和幼苗质量,以辣椒材料NJ2、TJ7和CT3为试材,研究了不同浓度GA和MT处理对辣椒种子萌发和幼苗生长的影响。结果表明:适当浓度的GA_(3)和MT均能提高辣椒种子的发芽率、发芽势、发芽指数和活力指数,高效促进辣椒种子萌发的GA_(3)最低临界浓度为0.9 mmol/L,比较合适的浓度为0.9~1.2 mmol/L;促进辣椒种子萌发的最佳MT浓度为150 μmol/L,在此浓度下辣椒材料的胚根长和胚芽长,NJ2分别比CK增加102.45%和65.61%、TJ7分别比CK增加119.85%和31.07%、CT3分别比CK增加69.23%和28.27%,然而,当MT浓度为250 μmol/L时,辣椒材料NJ2的胚根和胚芽生长明显受到抑制,其胚根长和胚芽长分别比CK降低44.60%和40.39%。
To improve the seed germination rate and seedling quality of peppers,the effects of different concentrations of gibberellins(GA_(3)) and melatonin (MT) on seed germination and seedling growth of pepper materials NJ2,TJ7 and CT3 were studied.The results showed that appropriate concentrations of GA_(3)and MT could improve the germination rate,germination potential,germination index and vigor index of pepper seeds.The lowest critical concentration of GAto efficiently promote pepper seed germination was 0.9 mmol/L,and its suitable concentration was 0.9-1.2 mmol/L.The optimum MT concentration for promoting pepper seed germination was 150 μmol/L,under which the radicle length and plumule length of pepper material NJ2 increased by 102.45% and 65.61%,TJ7 increased by 119.85% and 31.07%,and CT3 increased by 69.23% and 28.27%,respectively,compared with CK.However,when MT was 250 μmol/L,the radicle and plumule growths of pepper NJ2 were significantly inhibited,and its radicle length and plumule length was 44.60% and 40.39% lower than CK,respectively.
作者
李晶
何琼
刘微
曹丽敏
李玉中
刘最
李应龙
刘宇华
LI Jing;HE Qiong;LIU Wei;CAO Li-min;LI Yu-zhong;LIU Zui;LI Ying-long;LIU Yu-hua(College of Life Science,Hengyang Normal University,Hengyang 421008,PRC;College of Medical Technology,Hunan Polytechnic of Environment and Biology,Hengyang 421005,PRC;Hunan Key Laboratory for Conservation and Utilization,of Biological Resources in the Nanyue Mountainous Region,Hengyang Norm al University,Hengyang 421008,PRC;Hunan Juweitang Foods Co.,Ltd.,Hengyang 421499,PRC)
出处
《湖南农业科学》
2022年第9期4-9,共6页
Hunan Agricultural Sciences
基金
湖南省教育厅科学研究项目(21C0545)
衡阳师范学院科研启动基金(2020QD17)
衡阳师范学院大学生创新创业训练计划(cxcy2022053)。
关键词
赤霉素
褪黑素
辣椒
种子
萌发
gibberellins
melatonin
pepper
seed
germination
