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《Journal of Shanxi Agricultural Sciences》 2009-07
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Effects of Sowing Time on Young Panicle Differentiation Process in Wheat Varieties of Different Ecotypes

SONG Xiao-yan,SUN Min(College of Agronomy,Shanxi Agricultural University,Taigu 030801,China)  
The study aims to provide reference for the relationship between vernalization and organogenesis.In the experiment,we selected four kinds of different wheat varieties,Jing841,Chuanmai107,Yangmai16,Gaoyuan602 as test materials sowed at different times,and data was analyzed using Excel and DPS.The results showed that stronger spring wheat varieties planted in the spring panicle could enter double ridge stage normally,and winter varieties could not enter double ridge stage normally without a vernalization.Spring wheat varieties shortened the whole young panicle differentiation time because of the postponement of enter double ridge stage by the delayed sowing date.In the same wheat variety,the amount of dry matter,plant nitrogen rate and nitrogen accumulation in the plant which could not be enter double ridge stage was significantly lower than in normal plant.With delayed sowing dates,plant nitrogen rate and nitrogen accumulation increased in the same wheat variety which could go through young panicle differentiation completely.
【Fund】: 山西农业大学创新基金项目(2008005)
【CateGory Index】: S512.104
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