]*>","")" /> Relations between the Interval Time of Male and Female Spike Flowering and Yield and Drought Resistance of Maize under Water Stress
Xinjiang Agricultural Sciences

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Relations between the Interval Time of Male and Female Spike Flowering and Yield and Drought Resistance of Maize under Water Stress

LIU Cheng;SHEN Hai-bing;SHI Yun-su;SONG Yan-chun;WANG Tian-yu;LI Yu   

  • Received:2008-04-25 Revised:2008-04-25 Online:2008-04-25 Published:2008-04-25

水分胁迫后玉米雌雄穗开花间隔时间(ASI)与产量和抗旱性的关系研究

刘成;申海兵;石云素;宋燕春;王天宇;黎裕   

  1. 新疆农科院粮食作物研究所,乌鲁木齐,830091;中国农业科学院作物科学研究所,北京,100081





摘要： 玉米开花期是对干旱最为敏感的时期.此时受到水分胁迫会导致玉米授粉不良进而影响到产量.通过对454份玉米自交系连续两年的研究,在开花期受到水分胁迫后,玉米雌穗生长减缓,吐丝期延迟,ASI增大,结穗率和籽粒产量严重下降,其中ASI、结穗率与籽粒产量均呈极显著相关.因此,在干旱胁迫条件下对产量进行间接选择时,ASI和结穗率是可供利用的重要耐旱指示性状.ASI可作为抗旱玉米种质筛选的主要指标之一.