Presentation on theme: "The Changing of Oil Content at Different Germinating Stages in the Seeds of Camellia grijsii Hance Yuexia Weng Xueqian Fei The Research Institute of Subtropical."— Presentation transcript:
The Changing of Oil Content at Different Germinating Stages in the Seeds of Camellia grijsii Hance Yuexia Weng Xueqian Fei The Research Institute of Subtropical Forestry The Chinese Academy of Forestry
INTRODUCTION seeds Matured capsues of Camellia grijsii
Treat ment Number of Rats Number of Times for Acquisition after 3 Months Feeding Number of Rats Number of Times for Acquisition after 6 Months Feeding GRI SBO CK 777777 13.7±8.7 a* 14.3±8.4 a 26.9±12.9 b 666666 21.6±7.8 a* 27.8V6.7 b 35.6V10.3 b The Number of Times for Acquisition of Brightness Discrimination in Aged Rats Fed Different Diet at the End of 3 and 6 Months (Mean±SD) (1) GRI: GRI oil+Feed (2) Different letters represent significant SBO: Soybean oil+Feed differences among 3 treatments. CK: Feed of non additional oil level of significance: *p<0.05
The seeds damaged by voles due to oil attraction ? Germinnated seed no attraction for voles?
MATERILS Different germinating stages of C.grijsii seeds used in oil-content test Cg 1 JM a JM b
METHODS Oil Content Test Soxhlet method. Statistics Analysis of Variance (ANOVA) for the whole test; t test for the significant difference between oil contents of seed /seedling at every two stages.
Seed source Dormant seed Burst seedSeed possesing root 3cm Seedling underground Stage 0Stage 1Stage 2Stage 3 Cg 1 JM a JM b 33.60 45.21 44.19 25.19 31.37 28.52 25.00 29.67 30.79 25.58 29.01 15.01 Mean41.0028.36 b 28.49 b 23.20 b * Different letter mark means significant difference at level P< 0.05. Oil content of C. grijsii seed /seedling at different germinating stages (%)* RESULTS
SUMMARIZATION Rich fragrant edible oil were attractive for voles. Using germinated seeds with a root length beyond 3 cm was successful for survival in nursery. Comparing the oil content of dormant seed with germinated seed at different stages showed that there is approximately 1/3 decrease of the oil from seeds at dormant stage to that at germinating stage 1,2, and 3.The difference in between is of statistical significance at level P<0.05. Has the significant decreasing of the oil content during the seed germination made the seeds losing attraction for voles? Are there some other substances changing that protects the seeds from voles aggression? Additional successive and detailed studies are required to reveal the exact reason.
The Research Institute of Subtropical Forestry, CAF Autumn 2001