摘要： 在不同盐碱含量的试验地块下,通过整个生育期对供试材料耐盐碱指标的测定,评价了玉米骨干自交系的耐盐碱性,并对供试材料的耐盐碱性划分了等级。结果表明,成株率、株高、绿叶数、穗粒数和出籽率耐盐碱指数均与产量耐盐碱指数呈不同程度的正相关关系,其中,出籽率耐盐碱指数与产量耐盐碱指数相关性达到显著水平。可见,开花散粉期,较高的成株率、散粉后维持相对较多的绿色叶片数、成熟期确保较高的穗粒数和出籽率是耐盐碱性较高的材料获得高产的前提。和其他自交系相比,齐319玉米自交系耐盐碱性较强。

关键词: 玉米, 骨干自交系, 耐盐碱性, 农艺性状, 产量

Abstract: The saline-alkaline tolerance of maize skeleton inbred lines were evaluated,of which were classed into different grades through the determination of the saline-alkaline tolerance index in the whole growth stage in this study.The results showed that,the saline-alkaline tolerance index of mature plant rate,plant height,green leaf number,seed number per spike and seed-producing percentage were positive related to the yield,which the saline-alkaline tolerance index of seed-producing percentage and yield reached significant level.This study also concluded that higher mature plant rate at tasseling-silking stage,relatively more green leaf number after silking,more seed number per spike and seed-producing percentage at seed mature stage was the premise to obtain high yield.Compared with other skeleton inbred lines,Qi 319 inbred lines had a stronger saline-alkaline tolerance.

Key words: Maize, Skeleton inbred lines, Saline-alkali tolerance, Agronomic traits, Yield

中图分类号: 

• S513.01