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Morphological and Molecular Changes of Maize Plants After Seeds Been Flown on Recoverablf Satellite by M Mei; Y Qiu; Y Sun; R Huang; J Yao; Q Zhang; M Hong; J Ye is a Physics and Astronomy article available to read on EtoBox.

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Dry seeds of Zea may?, heterozygous for Lw,/lw, alleles, sandwiched between nuclear track detectors aboard Chinese satellite for 15 days, were recovered and mutations in morphological characters on plants developed from these seeds, as well as their selected progenies, were investigated. The dosimetric results indicated that 85% of the seeds received at least 1 hit with z2 20. About 10% of plants developed from flown seeds and 40% of observed selfed lines from the first generation plants showed some morphological changes, such as yellow stripes displayed on leaves, dwarf, anomogensis of floral organs and yellow-green seedlings, when compared with those from ground control. Using yellow stripes on leaves as the main endpoint for evaluating mutation induced in space environment, the frequency of stripe occurrence was 4.6% in the first generation plants, compxable with the results obtained from Long Paation Exposure Facility (LDEF) mission (Mei et al., 1994), but much lower than those from ground based a Co-gamma treatment at a dose of 100 Gy, which reached 35.5% in the selfed lines of the second generation. One hundred and ten random primers were screened in RAPD analysis to detect t

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Author

M Mei; Y Qiu; Y Sun; R Huang; J Yao; Q Zhang; M Hong; J Ye

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0273-1177)

Published

1998

Language

EN

Field

Physics and Astronomy (Physical Sciences)