Analysis on Variation of Agronomic Traits of Progenies of Winter Wheat Lantian No.17 Induced by Space Environment

Using the pedigree method,variation of agronomic traits of progenies of winter wheat Lantian No.17 induced by space environment.SP 1strains,SP 2 group and SP 2 significantly mutant lines and suspected mutant offspring performance were studied.The results showed that two height mutants,D 16 and D 38,were found in its SP 1.SP 2 of D 38 showed the character separation in the height and main spike length.There was no significant difference in plant height between SP 2 of D 16 and control,while a significant difference in plant height occurred between SP 3 of D 16 and control.Progeny of mutant D 38 from SP 2 showed genetically stable in SP 3 or SP 4 after individual selection.There was a significant mutation in wheat progeny,such as height,spike length,spike and grain morphological traits,after space mutation.Mutants can occur in SP 1,SP 2,or their progenies,which can become genetically stable after 2-3 generation of individual selection.Thus mutation of wheat progeny characters via space mutagenesis also meets the basic law of crops breeding.