Abstract
New rice lines, restorer line RB207 and maintainer line Yewei B, with better agronomic traits were separately developed from variant progeny of R207 (rice restorer line) and V20B (rice maintainer line) through transformation of genomic DNA ofEchinochloa crusgalli (C4 plant) andOryza minuta, respectively. The phenotypes of the variant lines were apparently different from those of the receptors. Yewei B had stronger tolerance to high temperature than did V20B. The number of spikelets per panicle and the 1000-grain weight of RB207 increased by 40% over those of R207. The results of amplified fragment length polymorphism (AFLP) analysis indicated that the polymorphism rates were both 4.4% between genomes of the variant lines and their receptors. Results demonstrated that special DNA segments fromE. crusgalli andO. minuta might integrate into the genome of cultivated rice and could be stably passed on. The study further shows that transformation of genomic DNA of distant relatives is an effective approach for creating new rice germ plasm.
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Abbreviations
- AFLP:
-
amplified fragment length polymorphism
- PCR:
-
polymerase chain reaction
- RAPD:
-
random amplification of polymorphic DNA
- RFLP:
-
restriction fragment length polymorphism
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Xing, Q., Zhao, B., Xu, K. et al. Test of agronomic characteristics and amplified fragment length polymorphism analysis of new rice germplasm developed from transformation of genomic DNA of distant relatives. Plant Mol Biol Rep 22, 155–164 (2004). https://doi.org/10.1007/BF02772722
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DOI: https://doi.org/10.1007/BF02772722