Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (16): 144-148.doi: 10.11924/j.issn.1000-6850.casb15100056

Special Issue: 园艺

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Nuts Traits and Fatty Acid Components of Early-maturing Walnut Varieties

Wang Yong, Shi Meijuan, Wu Yanxia, Li Hongyan, Hou Dongmei, Han Feng, Ru Huiling, Qiao Yongsheng, Tian Xin, Yu Jing, Gao Peng, Li Yilu   

  1. (Fruit Tree Research Institute, Shanxi Academy of Agricultural Sciences, Taiyuan 030031)
  • Received:2015-10-15 Revised:2016-04-27 Accepted:2016-04-28 Online:2016-06-17 Published:2016-06-17

Abstract: To understand nuts traits of different early-maturing walnut varieties and the differences of fatty acid content in walnut kernel, taking 17 early-maturing walnut varieties in Shanxi Agriculture Science Institute of Pomology as materials, the nuts traits were researched. Besides, the components of fatty acid were tested with gas chromatography method. The results showed that ‘Jinboxiang 6’ and ‘Lipin 2’ were outstanding in nuts traits among the 17 varieties. There were 6 kinds of fatty acids in all varieties: oleic acid, linoleic acid and linolenic acid (unsaturated fatty acid), fatty acids, palm acid, stearic acid (saturated fatty acid). Linoleic acid was the highest component among them, accounting for about 80% and oleic acid was the second highest one which accounted for nearly 80%. The ‘Liaoning 1’ had the highest oil content of 78.00% while ‘Bofeng’ had the lowest of only 59.40%. There were significant differences of oil content among these varieties. Among all the 17 varieties, the rate of oil yield of ‘Zha 343’ was 12.40% which was the highest, while that of ‘Jinboxiang 4’ was the lowest 3.50%. The palm acid of ‘Jinboxiang 1’ reached 7.30 g/100 g, which was the highest, while that of ‘Lipin 2’ was the lowest, which was 5.10 g/100 g. The material with high component of oleic acid and linoleic acid but low component of linolenic acid was the best in walnut variety breeding. Through comprehensive comparison, ‘Lipin 2’, ‘Jinboxiang 6’ and ‘Zha 343’ were the ideal varieties. This thesis could provide certain theoretical basis for walnut breeding and cultivating in Shanxi Province.

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