Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2017, Vol. 33 ›› Issue (25): 110-115.doi: 10.11924/j.issn.1000-6850.casb16070110

Special Issue: 油料作物

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Critical Temperature of Oil Sunflower Under High Temperature Stress: In Hetao Irrigation District, Inner Mongolia

  

  • Received:2016-07-21 Revised:2017-08-09 Accepted:2016-12-23 Online:2017-09-15 Published:2017-09-15

Abstract: In order to determine the critical temperature of oil sunflower in Hetao area with high temperature stress, protect themselves from the hurt of high temperature stress.The experiments were made with the Hetao area main planting of Oil Sunflower,By analyzing the changes of the ChlorophyⅡFluorescent Parameter,soluble protein content,soluble sugar content and POD content,then determined the High Temperature Index of Oil Sunflower.The results are as follow:(1) 36℃ and 39℃ were turning point in most Fluorescent Parameter of Oil Sunflower tolerance to high temperature.(2) 39~40℃ was a turning point in soluble protein content, soluble sugar content and POD of leaf and flower regulate themselves.(3) From the above analysis,36℃and39℃are the key temperature to carry out the oil sunflower heat-harm meteorological services.