航天搭载诱变获得多腋芽矮化遗传的烟草突变体—T-srd-中国烟草科学.PDF

6 Chinese Tobacco Science 2011-04 ，32 （2 ） —T-srd * 550081 GT11Nicotiana tabacum var. GT11T-srd, Tobacco of Sucker-rich and Dwarf mutantF F 1 2 5 31~38 d GT11 F1F2 1:3 1:1 90 dT-srd 161.73±16.30cm GT11 24.45%3.77±0.24cmGT11 31.33%10.03±0.42cmGT11 12.71%GT11 GT11 T-srd T-srd S572.02 1007-5119201102-0006-05 DOI 10.3969/j.issn.1007-5119.2011.02.002 A Tobacco Mutant, T-srd with Characters of Abundant Sucker and Dwarfness was Obtained by Aerospace Mutation * ZHENG Shaoqing, HU Zhongyi, YE Dingyong, CAI Liuti （Guizhou Tobacco Research Institute, Guiyang 550081, China ） Abstract: A dwarf mutant with abundant sucker was observed in populations of second generation of Nicotiana tabacum (L) cv.GT11 which experienced space mutation in a recoverable satellite, the Chinese third unmanned spacecraft “Shen-Zhou III”, and these heredities were stable. It was named as T-srd, Tobacco of Sucker-rich and Dwarf mutant. The suckers of T-srd emerged at the first leaf node in 5 weeks after sowing. In field, the emergence of sucker was orderly from bottom to top, and under the control of the apical bud, which had no sucker until the node laid under half of the stalk height at first flower stage. At 90 days after transplanting, the plant height, length of internodes, and stem girth of T-srd were lower than those of GT11. There was no sucker-rich and dwarf phenotype in F population, and the segregation ratio in F population of seedling between sucker-rich and sucker-free phenotype in 1 2 Chi-square test followed the Mendel Gen