Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2012, Vol. 28 ›› Issue (30): 125-130.doi: 10.11924/j.issn.1000-6850.2012-1225

Special Issue: 玉米

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Identification of Drought Resistance of Different High-yield Maize Cultivars

  

  • Received:2012-03-31 Revised:2012-05-26 Online:2012-10-25 Published:2012-10-25

Abstract:

The drought tolerance analysis of nine popularized maize cultivars in Shandong Province was studied under rain-shedding water control condition for 2010-2011. The drought tolerance of different cultivars was assessed based on indexes of subordinate function values (SV) of drought resistance and drought index (DI) of yield. The results showed that, compared with control, the yield of maize decreased obviously, the height of plant, ear position, stem diameter, ear length and grain weight per ear all declined, while bald length increased under water stress condition. The plant character, ear character, dry weight of aboveground and yield in 2011 were all performed better than that in 2010. Attached to the subordinate function values for the assessment of average standard, ‘Denghai 701’ was drought-tolerant cultivar, ‘Lai-nong 14’, ‘Nongda 108’, ‘Jinhai 5’ were medium drought-resistant cultivars, ‘Denghai 662’, ‘Zhengdan 958’, ‘Zhongke 11’, ‘Jundan20’ were drought-sensitive cultivars, while the drought resistance of ‘Qingnong 105’ would be further studied because of its subordinate function values was inconsistent between two year experiments.