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Position: Home > Articles > Track monitoring on viability of rice germplasm resources and regeneration under low temperature storage. Agricultural Science & Technology 2008,9 (1) 43-48

Track monitoring on viability of rice germplasm resources and regeneration under low temperature storage.

作者：

Ning XiuCheng

单位：

China.; Nanning 530007;Germplasm Genebank; Guangxi Academy of Agricultural Sciences

关键词：

cold storage;cultivars;forecasting;germplasm;monitoring;nature conservation;plant genetic resources;regeneration;rice;seed germination;storage;storage life;viability;Oryza;Oryza sativa

摘要：

Fifty-three rice germplasm resources warehoused during 1981-84 were regarded as materials to monitor the viability at warehouse time and different years after being warehoused. The results showed that seed germination rates of different rice germplasm resources assumed a descending trend in storage, with annual decreasing rate between 0.12% and 3.05%. The seed germination rates of most cultivars were above 75% after storing for 26 years. Forecasting analysis based on the germination rate of 75%, as reference, showed a huge difference of safe storage life for different rice germplasm resources, ranging from 12 to 50 years, or even longer. The results suggest that track monitoring on the viability and regeneration of rice cultivars is of great importance for germplasm resource conservation.

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Track monitoring on viability of rice germplasm resources and regeneration under low temperature storage.

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