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| Changes of phenotypic characters, oil content and oil quality of three hybrid olive varieties during fruit development |
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| DOI： |
| KeyWord:hybrid olive harvest time phenotypic character oil content fatty acid |
| FundProject: |
| Author Name | Affiliation | | MA Ting1,2, NING Delu1,2, LI Yongjie1,2, GENG Shuxiang1,2, ZHANG Yanli1,2 | 1.Institute of Economic Forestry, Yunnan Academy of Forestry and Grassland, Kunming 650201, China
2.National & Local Joint Engineering Research Center of Germplasm Innovation and
Utilization of Woody Oil, Kunming 650201, China |
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| Abstract: |
| In order to determine the best harvest time of hybrid olive varieties, three olive hybrid varieties Yunza No. 1, Yunza No. 2 and Yunza No. 3 were observed based on fruit phenotype characters, oil content and oil quality from June to October in 2018, and the principal component analysis was used for comprehensive evaluation. The results showed that with the delay of harvest time, the transverse diameter, longitudinal diameter, single fruit weight, pulp rate, maturity index, oil content and linoleic acid content of the three varieties showed an upward trend, while the change trends of fruit shape index, water content, oleic acid and linolenic acid content were opposite. There were significant differences in various indexes at different harvest time. From the end of September to the end of October, the fruit growth of the three varieties tended to be stable, the maturity index was 4.56-5.52, the fruit shape index was about 1.4, the single fruit weight was 1.25-1.41 g, the pulp rate was 6882%-7194%, the water content of fresh fruit was 5001%-51.53%, and the oil content of fresh fruit was 16.10%-21.61%. In terms of oil quality, the main fatty acid were oleic acid, linoleic acid, palmitic acid, stearic acid, linolenic acid and hexadecenoic acid, accounting for more than 98% of the total fatty acids, of which the unsaturated fatty acids content accounted for more than 82%. The principal component analysis showed that the best harvest time of Yunza No. 1 was the end of September, and Yunza No.2 and Yunza No.3 were more suitable to harvest at the end of October. The overall performance at the best harvest time decreased in the order: Yunza No. 2, Yunza No. 3 and Yunza No. 1. |
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