摘要
为了研究常绿乔木倒吊笔种子发芽特性,于2018年12月采集种子,2019年3月用浓度分别为50、100、150 mg/L的GA3、NAA、IAA处理种子后,观察发芽率;并于2019年6月、7月、8月分别进行常规发芽试验。结果表明,150 mg/L GA3和100 mg/LNAA处理,发芽率分别为81.00%、80.67%,显著高于清水对照(发芽率77.33%),其他各浓度处理发芽率显著低于清水对照;种子开始发芽时间在第5天,于第13天达到峰值。2019年6月、7月、8月常规发芽试验的发芽率分别为95.33%、91.00%、85.33%,显著高于2019年3月植物生长调节剂各处理的种子发芽率,这说明倒吊笔种子可能具有后熟现象。
In order to study the seed germination characteristics of evergreen tree Wrightia pubescens R.Br.,seeds were collected in December of2018 and treated with GA3,NAA and IAA(the concentrations were 50 mg/L,100 mg/L,150 mg/L) in March of 2019.The seed germination rate was observed.Routine germination tests were carried out in June,July and August of 2019.The results showed that the germination rates of 150 mg/L GA3 and100 mg/L NAA treatments were 81.00% and 80.67%,respectively,which were significantly higher than those of the control group(77.33%).The other treatments were significantly lower than the control.The germination time of seeds began on the fifth day and reached the peak on the thirteenth day.The germin-ation rates of conventional germination test in June,July and August of 2019 were 95.33%,91.00% and 85.33%,respectively,which was significantly higher than that of the seeds treated by plant growth regulators in March of 2019.It indicated that the seeds of Wrightia pubescens R.Br.probably had postripening phenomenon.
作者
杨崇城
郑妹
王静
谢秋兰
李润唐
YANG Chong-cheng;ZHENG Mei;WANG Jing;XIE Qiu-lan;LI Run-tang(Cunjin College,Guangdong Ocean University,Zhanjiang Guangdong 524094)
出处
《现代农业科技》
2020年第4期126-127,133,共3页
Modern Agricultural Science and Technology
基金
广东省大学生科技创新培育专项资金“雷州半岛乡土园林树木种子渗调引发技术研究”(攀登计划pdjh2019b0660)。
关键词
倒吊笔
发芽特性
植物生长调节剂
发芽率
Wrightia pubescens R.Br.
germination characteristic
plant growth regulator
germination rate
