河西走廊玉米水分高效利用种质的筛选方法探讨

doi:10.3969/j.issn.2096-1197.2019.01.12

Abstract

Abstract: This study focused on the difference between drought resistance and water-saving drought resistance.Based on environmental indexes which were drought yield index(DYI),high water yield index(WHY)and yield-water efficient utilization index(YHWUEI),the water-saving and drought resistance of maize varieties in Hexi Corridor oasis irrigated area were evaluated.Those with the DYI,WYI and YHWUEI indexes which were all greater than 1.050 were defined as the high water efficiency maize varieties in this area.Those with the three indexes less than 1.000 were defined as the low water efficient maize varieties.Those with the three-indexes in the range of 1.000-1.050 were defined as the middle water efficient maize varieties.In this experiment,the WUE of Ganyu 801 in drought stress and water filling environments were higher than other varieties.Moreover,its DYI,WHY,YHWUEI indexes were higher than 1.050.According to these results,Ganyu 801 could be considered as a high water efficiency maize variety in Hexi Corridor.

Key words: Maize;Water saving and drought resistance;Screening method

CLC Number:

S513

ZHANG Xueting;LIU Na;YANG Changgang(Gansu Academy of Agricultural Sciences,Lanzhou 730070,China). Discussion on screening methods of maize germplasm with high water use efficiency in Hexi Corridor[J].Journal of Northern Agriculture, 2019, 47(1): 68-73.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.3969/j.issn.2096-1197.2019.01.12

https://journal30.magtechjournal.com/bfnyxb/EN/Y2019/V47/I1/68

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Discussion on screening methods of maize germplasm with high water use efficiency in Hexi Corridor

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