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《Journal of Henan Agricultural Sciences》 2008-05
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Endosperm Development in Different Erect Panicle Type Varieties of Japonica Rice

XU Xing-wei1,YIN Chang-bin1,Lü Wen-yan1,SHAO Guo-jun1.2,CAO Xiu-Yun1,HE Ping1,CAO Ping1,HOU Xiu-ying1,WANG Jian-qiang1(1.College of Agronomy,Shenyang Agricultural University,Shenyang 110161,China;2.Liaoning Rice Research Institute,Shenyang 110101,China)  
Erect panicle type variety and curved panicle type variety of Japonica rice were used as experimental materials.The semi-thin sectioned ovary fertilized were used to show the shapes and the quantities of endosperm cells'substances such as starch grains,aleurone grains and so on,under the microscope after the flowering and pollinizing.The main results read as follows:About the endosperm cell nucleus dividing,the erect panicle type variety's was less than that of the curved panicle type variety after flowering,but contrarily in their substances accumulating.Starch grain appears first on the edge of the endosperm cells,the surrounding of cell nucleu appear a small starch grain when the cell membrane becomes.Within 11 days after flowering,the endosperm cells of the erect panicle type variety have been built up,in the meantime,the duration of the endosperm cells dividing is shorter than the curved panicle type variety.There was not obvious difference between the same locative caryosises of different infloresoenses,the developing courses of different caryosises in same location came to appear difference for 1-2 days.There was much more substances accumulated in the endosperm cells in erect panicle type variety than in curved panicle type variety.
【Fund】: 辽宁省自然科学基金项目(2OO32O92);; 辽宁省北方粳稻遗传育种实验室开放课题
【CateGory Index】: S511.22
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