Title: Comparative Study on Maize Hybrids and Parent Photosynthesis Characters
Abstract: Diurna1 variation of photosynthetic rate was determined for maize hybrids ShenDan16 and ShenYu21 and its parents by using LI- 6400 portable photosynthesis system in the field condition. The correlation analysis among stomatal conductance, intercellular CO2 concentration and transpiration rate on the impact of net photosynthetic rate were analyzed. The results indicated that diurna1 variation of net photosynthetic rate and Cond of maize hybrids and its parents all had a single- peak curve, net photosynthetic of Shenyu21 and its parents were higher than that of Shendan16 at each time segment, diurna1 variation of Ci showed ahigh- low- highcurve. The trend of Trmmol was basically identical with that of net photosynthetic rate. Limiting factors of net photosynthetic rate were different for two maize hybrids and its parents in different time. Net photosynthetic rate of leaf was positively correlated with Cond and Trmmol, but negatively correlated with Ci in most time period.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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