论文部分内容阅读
以 2个热带玉米群体 Pool16、Pool18的不同世代种质为材料 ,分别种植在开花期充足灌水、中度水分胁迫和严重水分胁迫 3种水分梯度条件下 ,研究玉米的雌雄穗开花间隔 (ASI)与产量及其其它性状间的关系。研究表明 ,随水分胁迫程度的加强 ,产量与 ASI间的相关性增强。在严重胁迫条件下 ,二者的相关系数 r=- 0 .5 2 9* * ;在胁迫条件下 ,产量与每株穗数呈极显著正相关。ASI和每株穗数可作为耐胁迫种质筛选的主要参考指标
The flowering interval (ASI) of maize (male and female) was studied under three waterlogging gradients of sufficient flowering, moderate water stress and severe water stress in two tropical maize pools Pool16 and Pool18. Relationship with yield and other traits. The results showed that with the increase of water stress, the correlation between yield and ASI increased. Under severe stress, the correlation coefficient between the two was r = - 0.529 * *. Under stress, the yield was significantly and positively correlated with the panicles per plant. ASI and panicles per panicle could be used as the main reference index for selection of resistant germplasms