Abstract: In order to study Nitrogen ion beam mutation effects on young wheat plant characters, discuss and find its' principles, air-dried seeds of each variety(line) Yumai 52,Yumai 2 and Yunong 92349 were lm- planted by Nitrogen Ion Beam, at mutation dose of 1 × 10¹⁷-6 × 10¹⁷N⁺/cm².Non-treated seeds were control. Germination test and potted plant test were carried out,both germination rate potential and its rate,and young wheat plant characters, which are seedling height,first leaf length,number of seminal roots and number of second-class roots were researched. The results showed that:1.The effects of Ion implantation on variety germination are different. That is, the difference of germination rate isn't significant,however, along with the increase of dosage, germination potential decrease. 2.To young wheat plant characters, after ion beam implantation,seedling height and first leaf length were decreased,number of seminal roots and number of second-class roots were increased;at the same time, with the increase of dosage, the tendency of ion implant effects is same: first decrease,then increase, and decrease. Moreover, there is variety difference to dose variance in second-class semfinal roots, in addition to this character, the dose variance in other three characters is significant.

Key words: Key words, Ion Beam implantation, Wheat, Young plant characters, Mutation effects

CLC Number: 

• S512