摘要
为提高对毛马齿苋种子萌芽的认识,研究其种子休眠和萌芽的特性,为其育苗栽培奠定技术基础。结果表明：毛马齿苋种子初生休眠期约25 d,室温存放30 d可完全解除休眠;种子为严格需光发芽种子,在弱光条件下不能萌芽,能被诱导进入休眠;解除休眠的种子比新采摘种子光敏性增强,萌芽高峰提前1 d;种子萌芽喜好高湿环境,土壤水分越高,种子的发芽率和发芽势就越高。毛马齿苋育苗宜采用解除休眠的种子,在光照条件下催芽2~3 d,播种于土表,采用透明塑料薄膜覆盖,严格保湿,保证光照,利于种子整齐出苗。
The paper studied the characteristics of dormancy and germination of Portulaca pilosa seed to understand its seed and to lay technical foundation for its propagation. Results indicated that,the primary dormancy period of seed was about 25 days,dormancy could be completely broken by stored at room temperature for 30 days.The seed was positively photoblastic seed that coudn＇t sprout and can be induced into sleeping in low light conditions.The dormancy broken seed was more sensitive to light,compared with the lately collected one,and the germination peak arose 1 day earlier. P. pilosa seed favorited humid conditions,the higher the soil moisture,the higher the germination rate and germination potential of the seed. In P. pilosa breeding,seeds with dormanly broken should be adopted,firstly seeds were promoted germinating in light conditions for 2-3 days,sowed on the soil surface,and then they were covered with transparent plastic film,keeping moisture and guaranteeing light conditions would be beneficial to seed burgeon.
出处
《广东农业科学》
CAS
2016年第6期76-80,共5页
Guangdong Agricultural Sciences
基金
海南省星火产业带项目(HNXH201504)
关键词
毛马齿苋
种子
休眠
萌芽
Portulaca pilosa
seed
dormancy
germination
