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猫儿屎的种子生物学特性研究

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本研究以采自湖北神农架的猫儿屎种子为材料,对其形态特征、种皮透性及萌发抑制物等进行研究.结果表明:猫儿屎种子的平均长度,宽度和厚度分别为9.34 mm,6.60 mm和2.45 mm;千粒重量为84.18 g;平均含水量为21.09%;带壳种子的平均吸水量为15.50%,去壳种子的平均吸水量为35.10%,表明种壳能减缓水分进入种仁的速度;通过TTC活性染色方法,检测4℃下干藏和湿沙种子的生活力为100%.通过白菜种子的萌发检测表明,猫儿屎种壳中不存在萌发抑制物质,而种仁中存在萌发抑制物质,从而造成猫儿屎种子休眠.
Study on Biological Characteristics of Seeds of Decaisnea insignis
In this paper,the Decaisnea insignis seeds collected from Hubei Shennongjia Forest Region were used as the object and their morphological characteristics,seed coat permeability and germination inhibitor were studied.The results showed that the average length,width and thickness of the seeds were 9.34 mm,6.60 mm,and 2.45 mm,respectively.The 1 000-seed weight was 84.18 g,and the average water content was 21.09%.The average water uptake of shelled seeds was 15.50%,and that of the hulled seeds was 35.10%,indicating that the shells could slow down the speed of water into the kernel.The viability ofDecaisnea insignis seeds stored in dry and wet sand at 4 ℃ was 100% by TTC (2,3,5-triphenyltetrazolium) activity staining method.The germination detection of Brassica pekinensis seeds indicated that the germination inhibitor did not exsist in the shells of Decaisnea insignis seeds but in the kernel which caused seeds dormancy.

Decaisnea insignisSeedBiological characteristic

刘佳、黎永业、梁宏伟

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三峡大学,三峡大学生物技术研究中心,三峡区域植物遗传与种质创新重点实验室,宜昌,443002

猫儿屎 种子 生物学特性

国家“十二五’科技支撑计划课题

2013BAD03B03

2018

分子植物育种
海南省生物工程协会

分子植物育种

CSTPCDCSCD北大核心
影响因子:0.765
ISSN:1672-416X
年,卷(期):2018.16(4)
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