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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (32): 23-29.doi: 10.11924/j.issn.1000-6850.casb2023-0784

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Effect of Altitude Environment on Grain Quality Characters of Brassica napus L.

ZHAO Caixia(), WANG Jinxiong()   

  1. Agriculture Institute, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850032
  • Received:2023-11-15 Revised:2024-01-15 Online:2024-11-15 Published:2024-11-12

Abstract:

This article studied the laws of the quality change of Brassica napus L. in different altitude environments, aiming to provide a reference for high altitude Brassica napus L. introduction and quality breeding. The effects of three altitudes on the quality of erucic acid, glucosinolate, oil content, palmitic acid, stearic acid, oleic acid, linoleic acid and linolenic acid of C18 fatty acids in rapeseed were compared and analyzed with 11 rapeseed lines. The results showed that the oil content of Brassica napus L. seed showed an increasing trend with the increase of altitude, and the performance among lines was consistent, with a coefficient of variation of 0.0822. Erucic acid content increased significantly after planting at high-altitude in Lhasa, and the content of glucosinolate increased to different degrees in high altitude planting than in low altitude planting. The coefficient of variation between the two was larger, which was 0.3364 and 0.4920, respectively. Correlation analysis showed that erucic acid content and oil content were significantly positively correlated with altitude, and the correlation coefficients were 0.865 and 0.750, respectively. Glucosinol was significantly correlated with altitude, and the correlation coefficient was 0.428. High altitude was conducive to the accumulation of oil content, erucic acid and glucosinolates. The elevation of latitude was conducive to the accumulation of palmic acid and stearic acid, and the change of temperature was the main factor of most quality content changes.

Key words: altitude, Brassica napus L., quality, oil content, erucic acid, glucosinolates, high altitude areas