Evaluation of Induction Rate of F1 from Different Maize Haploid Inducers Cross Combinations
Maize haploid inducer is an important factor to affect the efficiency of maize haploid breeding.In order to solve the problems of low induction rate,dwarf plant,poor stress resistance,and low pollen yield in maize hap-loid induces.In this study,the inbred line L583 was used as the maternal tester.On the basis of the induction rate for 8 inducers,25 inducer hybrids F,were constrcted,to evalute and analyze the induction rate.The results showed that the significant difference existed among the induction rate of different F1 hybrids,the induction rate of 21 hy-brids F,has different degrees of improvement compared with the low-value parent,and the induction rate of 11 hy-brids F,showed a positive super-high parental advantage.The study screened out 5 inducer hybrids with an induc-tion rate of over 9％,which are ZDHI007×ZDHI008,ZDHI005×ZDHI012,ZDHI008×ZDHI012,ZDHI007×ZD-HI012 and ZDHI005×ZDHI008,which can be used for large-scale isolation induction of haploids.
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