不同玉米杂交种耐盐碱性鉴定

在不同盐碱含量的试验地,通过整个生育期对供试材料耐盐碱指标进行测定,评价不同玉米杂交种的耐盐碱性,并对供试材料的耐盐碱性划分等级。研究结果表明,成株率耐盐碱指数与出苗率、最终产量耐盐碱指数均呈正相关关系,且均达显著水平。开花散粉期较短的ASI和较高的成株率、生殖生长期较多的绿色叶片数和穗粒数是耐盐碱性较高的品种获得高产的基础。与其他杂交种相比,辽1127和铁研39不仅表现出较高的耐盐碱性,且具有良好的生产潜力。

Saline-Alkali Tolerance Identification of Different Maize Hybrids

Saline-alkali tolerance evaluation and classification of different maize hybrids by determining saline-alkali tolerance index of maize hybrids through the whole growth stage under different pH value and salinity content experimental fields were studied. The results showed that ripe ear rate saline-alkali tolerance index correlated significant positively with emergence rate and yield saline-alkali tolerance index. The shorter ASI and higher ripe ear rate during the anthesis-silking stage, the larger number of green leaves and kernels per ear during the reproductive stage was the premise of obtaining a high yield of higher saline-alkali tolerance cultivars. Compared with other maize hybrids, Lian 1127 and Tieyan 39 not only showed higher saline-alkali tolerance at different pH value and salinity content experimental fields, but also had significant influence on the productive potentialities.