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- W3142458355 abstract "A field experiment with 225 kg ha-1 N fertilizer application was carried out in 2006 and 2007 on the farm of Yangzhou university,Jiangsu province,China.Using 12 rice genotypes(six N-efficient and six N-inefficient) selected from 120 rice cultivars grown in Yangzhou during 2004 and 2005 to investigate the relationship among the plant-type characteristics,N use efficiency and yield performance.The results showed that the top three leaves length and drop-angle of high yield and N-efficient rice genotypes were 9.29%,65.30% lower than those of the low yield and N-inefficient ones,and the width of the top three leaves,population LAI,valid LAI,high valid LAI,and LW/LA(leaves weight/leaves area) of the former of were 29.25%,8.27%,13.32%,6.66%,and 5.82% higher than those of the latter on average respectively.The high yield and N-efficient genotypes had higher lodging resistance capability and more reasonable distribution for the length of internodes on stem than the low yield and N-inefficient ones.Yield and N use efficiency negatively correlated(significantly at P0.05 or P0.01) with the length and drop-angle of the top three leaves,while positively correlated(significantly at P0.05 or P0.01) with the width of the top three leaves,population LAI,valid LAI,high valid LAI,SLW,anti-broken strength,bender moment,and lodge index.Especially,the length and width of the flag and top 3rd leaves played an important role in the N use efficiency.It was indicated that good plant-type structure is a prerequisite for N use efficiency." @default.
- W3142458355 created "2021-04-13" @default.
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- W3142458355 date "2010-01-01" @default.
- W3142458355 modified "2023-09-23" @default.
- W3142458355 title "Differences of Plant-Type Characteristics between Rice Cultivars with High and Low Levels in Yield and Nitrogen Use Efficiency" @default.
- W3142458355 hasPublicationYear "2010" @default.
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