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Changes of iPA and ABA contents in wheat plant after anthesis and their relations to photosynthetic rateof flag leaf,root vigor,and grain filling

PAN Qing min,YU Zhen wen,WANG Yue fu,LI Guang zhong,WANG Ri ying (Shandong Agricultural University,Taian,Shandong 271018,China)  
Using two wheat cultivars with different grain weight as material,changes of iPA and ABA contents in flag leaf,root and grain of wheat after anthesis as well as their respective relations to photosynthetic rate of flag leaf,root vigor,and grain weight were studied.The results showed that,compared with Lumai 14,the contents of iPA in flag leaf and root of Lumai 22 which has higher grain weight were higher,and the rapidly decreasing date were put off,while the ABA contents in flag leaf and root were lower and the rapidly increasing date were postponed.The iPA content in grain of Lumai 22 was higher than that of Lumai 14 and ABA content in grain was higher too within 16 days after anthesis,but then lower than that of Lumai 14.
【Fund】: 国家自然科学基金资助项目!( 3 9970 4 2 5)
【CateGory Index】: Q945.18
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