摘要
为了明确苗期玉米根系和叶片对干旱的生理响应,采用人工控制水分的方法,研究了干旱胁迫下苗期玉米(Zea mays L.)根系和叶片的生理指标。结果表明:苗期在中度干旱胁迫处理的条件下,不同玉米杂交种根系和叶片均表现出对干旱胁迫的生理响应。综合比较得出,A09925×1-5-4-4-1、A09921×1-5CK、A09927×1-5-4-1-2、A09922×1-5-2-2四个品种耐旱性表现较好,可作为北方玉米育种的优良材料;而品种A09924×1-5-3-1-2、A09152×09引-2♂、A091292×09引北品种耐旱性表现较差;初步确定了品种A09924×1-5-3-1-2的最低需水量。
In order to clarify physiological response of maize roots and leaves for drought during seedling stage , physiological indexes of maize roots and leaves under drought stress during seedling stage were studied by arti-ficial control moisture .The results showed that under moderate drought stress ,roots and leaves of different maize hybrid had physiological response for drought stress .during seedling stage .Through comprehensive comparison ,four varieties of A09925 × 1-5-4-4-1 ,A09921 × 1-5CK ,A09927 × 1-5-4-1-2 ,A09922 × 1-5-2-2 had good performance on drought resistance ,and could be used as the northern maize breeding .The varieties of A09924 × 1-5-3-1-2 ,A09152 × 09 yin-2♂ ,A091292 × 09 yinbei had worse drought resistance .The minimum water requirement of A09924 × 1-5-3-1-2 was ascertained preliminary .
出处
《黑龙江农业科学》
2014年第1期4-6,20,共4页
Heilongjiang Agricultural Sciences
基金
国家"863"资助项目(2009AA10AA03-6)
国家"十二五"科技支撑计划资助项目(2011BAD35B00)
关键词
玉米
杂交种
苗期
耐旱性
maize
hybrid
seedling stage
drought-resistance
