^(60)Co-γ辐射处理对不同株龄蝴蝶兰生长发育的影响  

Effects of ^(60)Co-γRadiation Treatment on the Growth and Development of Phalaenopsis at Different Plant Ages

作　　者：王瑞华 蒋拴丽 杨书才 冯建 赵玉安 王俊 WANG Ruihua;JIANG Shuanli;YANG Shucai;FENG Jian;ZHAO Yu’an;WANG Jun(Zhengzhou Institute of Agricultural Science and Technology,Zhengzhou,Henan 450005)

机构地区：[1]郑州市农业科技研究院,河南郑州450005

出　　处：《热带农业科学》2024年第10期67-71,共5页Chinese Journal of Tropical Agriculture

基　　金：河南省重点研发与推广专项(科技攻关)(No.232102111101);河南省林木种质资源建设项目(豫财环资[2023]60号,豫财环资[2024]47号)。

摘　　要：以蝴蝶兰品种郑农鸿运的2.5寸(1寸≈3.33 cm)中苗和3.5寸成熟苗为研究对象,进行不同剂量的辐射处理,探究^(60)Co-γ射线辐照处理对不同株龄蝴蝶兰生长的影响。结果表明:(1)^(60)Co-γ辐射处理影响蝴蝶兰植株的生长发育,不同株龄的蝴蝶兰对辐射的敏感度不同,2.5寸郑农鸿运中苗对^(60)Co-γ射线更敏感;(2)各剂量辐射处理均能增加蝴蝶兰叶片厚度和叶绿素含量;(3)低剂量的^(60)Co-γ辐射能够诱导花梗伸长、花朵增大,高剂量的^(60)Co-γ辐射抑制了蝴蝶兰开花;(4)10Gy剂量的^(60)Co-γ辐射处理在植株生长和开花方面更具优势,可作为蝴蝶兰辐射诱变的推荐剂量。To investigate the effects of ^(60)Co-γray irradiation on the growth of Phalaenopsis at different ages,2.5-inch(1 inch≈3.33 cm)medium-grown seedlings and 3.5-inch mature seedlings of the Phalaenopsis cultivar‘Zhengnonghongyun’were treated with various doses of ^(60)Co-γray irradiation.The results revealed that(1)^(60)Co-γradiation treatment affected the growth and development of Phalaenopsis plants.The sensitivity to radiation was different at different ages,and the 2.5-inch“Zhengnong Hongyun”seedlings were more sensitive to ^(60)Co-γrays.(2)All radiation doses could increase the leaf thickness and chlorophyll content of Phalaenopsis.(3)A low dose of ^(60)Co-γradiation can induce pedicel elongation and flower enlargement,whereas a high dose of ^(60)Co-γradiation can inhibit Phalaenopsis flowering.(4)A 10 Gy dose of ^(60)Co-γradiation treatment has more advantages in plant growth and flowering and can be used as the recommended dose for radiation mutagenesis in Phalaenopsis orchids.

关 键 词：蝴蝶兰 ^(60)Co-γ射线 辐射诱变 叶绿素 品种改良 育种 

分 类 号：S682.31[农业科学—观赏园艺]