Studies of Wheat Lodging Resistance on the Basis of a New Method

doi:10.7668/hbnxb.2015.03.013

Abstract

Abstract: Six high-yield wheat varieties widely applicated in production were selected in order to explore a new method for the determination of lodging resistance of wheat,measuring single-stalk lodging resistance strength and group lodging resistance strength by using self-made electronic measuring instrument of crop lodging resistance strength,and with the calculation of the stalk lodging index comparison.The results indicated that single stem lodging resistance strength and group lodging strength of wheat varieties showed a strong regular variation after flowering,the single-stalk lodging resistance strength was highest at the anthesis stage,and the population lodging resistance strength reached a maximum at the highly grain milk stage.There was significantly or extremely significantly negative correlation single stem,population lodging resistant strength and plant height,height of gravitational centre,which reflected the results consistent with the lodging index.So,the results proved that the determination of lodging resistance of wheat by using lodging resistance instrument was feasible.The single stem and group lodging strength tested with the relationship of days after flowing can be fitted through the cubic equation and higher fitting degree,the coefficient of determination was respectively 0.996 4 and 0.968 4.We took effective measures basis of lodging resistance change in production and to reduce the lodging probability.

Key words: Wheat, Single-stalk, Group, Lodging resistance strength, Lodging index

CLC Number:

S512.01

FENG Su-wei, JIANG Xiao-ling, DING Wei-hua, NIU Li-yuan, SONG Xin-mi, RU Zhen-gang. Studies of Wheat Lodging Resistance on the Basis of a New Method[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(3): 69-72. doi: 10.7668/hbnxb.2015.03.013.

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