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《Acta Agrestia Sinica》 2003-02
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The Study on Germinating Conditions and Physiological Characteristics of Ceratoides Seeds

Wang Xue min,Yi Jin (Inner Mongolia Agricultural University, Huhhot, Inner Mongolia Autonomous Region 010018, China)  
A Study on the germinating conditions including temperature, illumination, moisture, and germinating bed of 7 materials gathered from 3 species of Ceratoides indicates that the seeds all generated well and the seed vigor proved the highest under a constant temperature of 25℃, or a vaviable temperature of 15~25℃. However, illumination did not significantly affect germination. The water requirement for germination ranged from 4 to 7 times the weight of the seed, and the minimum water requirement for germination differed among the 7 materials. C. arborescens apparently required the lowest amount of water (4 times its seed weight), and absorbed the water quickly in a speed of 0.6~0.7 g/h each seed grain in general, and reaching saturation 7~8 h after watering. Paper bed was an optimum for germinating seeds of Ceratoides L.. The study also shows that obvious differences of seed vigour existed between species, ecotypes and growth age of the plant. The seed of C.arborescens was the most vigorous. Generally, seeds produced under adverse environment are less vigorous.
【Fund】: 国家自然科学基金“驼绒藜属牧草种子生物学特性的研究”(项目编号 :C3 9960 0 10 )资助
【CateGory Index】: S54
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