Study on Haploid Inducing Ratio of Foreign Inducer EMK-1 and Natural Doubling of Haploid
ZHOU Liandong
SUN Pei
WANG Wenjie
LIU Jingwei
WANG Rui
Abstract：Haploid inducing ratio of a foreign inducer EMK-1 for six hybrid combinations which were de-veloped by Chang 7-2/LX9801, Chang 7-2/78599, Chang 7-2/PH4CV, Zheng 58/PH6WC, Zheng 58/78599 and Zheng 58/K22 was determined in Huanghuaihai region,and haploid stage seeding experiments were set in Xinxiang,Henan province to study the effect of local ecological conditions on the natural dou-bling of haploids.The results showed that when the females were Zheng 58’ s improved lines,the average inducing ratio was 8.08%,if they were Chang 7-2’s improved lines,the number was 5.11%.The combi-nations from Zheng 58 and 78599 lines had the best inducing ratio of 9.24%.Sowing date had a signifi-cant effect on natural doubling effect of maize haploid,and It would be a better option for planting hap-loids between March 30th and April 13th,when the natural doubling rate was high.
Keywords：maizehaploidnatural doublingEMK-1inducing ratio
Publication Date：2015-09-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：3( 19-21 )