The Relationship Between Root Traits and Yield Formation of Early-late Season Super Rice in South China

doi:10.7668/hbnxb.2014.03.033

Abstract

Abstract: In order to explore the relationship between root traits and yield formation of early-late season super rice in South China under Strong-source-live-sink(SSLS) and conventional high-yield(CHY) cultivation technique.Effects of two cultivation techniques on root traits at different periods, yield and yield components of super rice(Liangyoupeijiu, Shengtai 1 hao, Yuxiangyouzhan, Guinongzhan, Hemeizhan and Fengmeizhan) were investigated in field.The results showed that big yield difference of different varieties under the same cultivation condition, Liangyoupeijiu>Shengtai1hao>Yuxiangyouzhan, Guinongzhan>Hemeizhan, Fengmeizhan.The yield of the same rice under Strong-source-live-sink cultivation was higher than conventional high-yield cultivation, the yield of Liangyoupeijiu, Shengtai 1 hao, Yuxiangyouzhan, Guinongzhan, Hemeizhan and Fengmeizhan was 10.06%, 19.74%, 21.58%, 23.39%, 18.60%, 26.23% higher respectively compared with conventional high-yield cultivation.Root length, root surface area and root volume of the same rice under Strong-source-live-sink cultivation were higher than conventional high-yield cultivation.Root length, root surface area, root volume and root tip number were positively correlated with dry matter accumulation above ground, most significant in booting stage and filling stage.It is believed that root traits and yield under Strong-source-living-sink cultivation were better than conventional high-yield cultivation, so Strong-source-living-sink cultivation was more suitable as corresponding cultivation technique of early-late season super rice in South China.

Key words: Super rice, Root, Yield, Strong-source-live-sink, Conventional high-yield cultivation

CLC Number:

S511.03

DUAN Mei-yang, TIAN Jin-yuan, YE Li-hong, PAN Sheng-gang, TIAN Hua, TANG Xiang-ru. The Relationship Between Root Traits and Yield Formation of Early-late Season Super Rice in South China[J]. journal1, 2014, 29(3): 180-186. doi: 10.7668/hbnxb.2014.03.033.

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