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Preliminary Study on Stomatal Characteristics in Different Types of Drought─resistant Soybean Cultivars

Lu Guihe;Liu Xueyi;Zhan Xuewu(Economic Crop Research institute,Shanxi Academy of Agricultural Sciences,Fenyang)  
Fifteen different drorghtresistant cultivars were used to study the stomatal characteristics and the relation between the stomatal characteristics and the drought resistance in drought field. The results showed that: there were significantly differences among cultivars in stomatal density (SD), stomatal length (SL) and total stomatal length per unit leaf area (SDXSL);adaxial SD and SDXZSL were significantly and positively correlated with abaxial SD and SDXSL respectively; adaxial SL were positively correlated with SL;both adaxial and abaxial SD was negtively correlated with SL;the differences among different drought-resistant types in abaxial SD was significant, which showed there was certain relations between abaxial SD and the drouhgt resistances. SD and SDXSL in the stronger tolerant type were larger than the weaker one, but SL was smaller. The changing trend of stomatal characteristics except adaxial SL was similar to the stronger one. The stomatal characteristices were correlated with the drought resistance. Thus the stomatal characteristics were regarded as reference indicators in evaluating the soybean drought resistance.
【CateGory Index】: S565.102
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