%A Yin Yan-hai, Chen Hui, Kuang Bai-jian and Wang Jing-ju %T Selection and Characterization of Asparagus Mutants Resistant to Inhibition by Lysine Plus Threonine %0 Journal Article %D 1990 %J J Integr Plant Biol %R %P -${article.jieShuYe} %V 32 %N 1 %U {https://www.jipb.net/CN/abstract/article_26787.shtml} %8 %X Asparagus officinalis calli were induced from shoot of seedlings. After mutagenization, two lysine plus threonine resistant mutant lines (LTR2, LTR3) were obtained by selectionnonselection-reselection procedures with 2 mmol/1 lysine plus threonine. LTR2 and LTR3 caIli remained resistance to lysine plus threonine after being subcultured for 1 year, and both of them showed cross resistance to 1 mmol/l aminoethylcysteine. In resistant calli, the free lysine, methionine and an unknown amino acid were l-l0 times more than those in controls.