Scientia Silvae Sinicae ›› 1998, Vol. 34 ›› Issue (2): 111-114.
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Yongbao Shen1,Fangyuan Yu1,Handong Gao1,Tianxi Jin2,Xianzhi Zeng2
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Abstract:
This paper studies a method to test the seed viability of Yunnan pine (Pinus Yunnanensis Franch) by the radiography with water as contrast agent.The results showed that the method can be used for rapidly testing seed viability in accordance with its germination percentage.The suitable procedure is as follows :The seeds were dried in a drier(30 ℃) with silica gel(SiO2) for 5.5 hours after the seeds were soaked in water(25 ℃) for 24 hours and put on a germination medium for 24 hours.The internal structure of viable seeds can't been seen on its picture or slightly seen.Based on these dead seeds and viable seeds can be determined easily.
Key words: Yunnan pine seed, Seed viability, X-ray method with water as contrast agent
Yongbao Shen,Fangyuan Yu,Handong Gao,Tianxi Jin,Xianzhi Zeng. STUDIES ON X-RAY CONTRAST METHOD WITH WATER FOR TESTING VIABILITY OF YUNNAN PINE SEED[J]. Scientia Silvae Sinicae, 1998, 34(2): 111-114.
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Fig.1
Changes of moisture content of dead or viable seed during drying"
Fig.2
Radiograph of vigour seed and vigourlees seed of Yunnan pine after treatment with water and drying"
Table 1
The viability of 10 seed samples determined by IDX-method compared with the actual germination percentage in Yunnan pine"
