Effect of Different Grow th Regulators on Grain Yield of M aize in Shading Condition at Flow ering Stage
QIAO Jiang-fang
LIU Jing-bao
HUANG Lu
XIA Lai-kun
ZHU Wei-hong
LI Chuan
Abstract：To study the effect of different plant growth regulators on the growth and yield of maize under shading condition ,Liyu 16 was used as material and was treated with shading before silking stage .After 10 days of shading ,we removed the shade and sprayed different plant grow th regulators at the same time ,including GA(A) ,IAA(B) and 6-BA(C) .The results showed that , with the shading treatment ,the application of plant grow th regulators could improve the popula-tion structure and increase the grain yield of maize .The yield of A3(30 mg/L) ,B1(0 .05 mg/L) and C3(60 mg/L) treatment was respectively 81 .81% ,208 .1% and 1 .2% higher than that of shading treatment without spaying growth regulator ,the main reason of which was increasing the grain number per ear and rate of seeds .After shading treatment ,the leaf area index and chloro-phyll content were higher in reproductive period ,and spraying growth regulators could reduce the leaf area index and increase the accumulation and translocation of dry matter .
Keywords：maizeshadinggrowth regulatoryieldleaf area indexdry matter accumulation
Publication Date：2013-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 24-27 )