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Inter-family distant hybridization of Oryza sativa and Oenothera biennis

Published online by Cambridge University Press:  03 March 2009

Chu Xiu-Cheng*
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Zhao Ji-Hong
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Chai Yang
Affiliation:
Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China
Zhao Jian-Feng
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Zhao Yun-Yang
Affiliation:
Institute of Genetics and Cytology, Northeast Normal University, Changchun 130024, China
Jiang Li-Yan
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Zhao Fen-Shan
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Yu Hui-Qin
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
Zhao Wei-Dong
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
You Zhi-Qiang
Affiliation:
Tonghua Institute of Agricultural Sciences, Meihekou 135007, China
*
*Corresponding author. E-mail: chuxiucheng@163.com

Abstract

Progenies derived from rice (Oryza sativa ssp. japonica) plants pollinated by Oenothera biennis exhibited numerous morphological and developmental traits. Some variant individuals appeared in generation D2. From generations D3 to D6, a large number of variants were observed, showing distinct variable traits including giant embryos. Statistical analysis on D6 lines showed significant differences between progenies and their rice parental line in several main traits, including plant height (49.2–164.5 cm), panicle number (12.1–38.2), panicle length (20.3–30.3 cm), length of sword leaf (13.8–57.5 cm), leaf width (11.1–25.2 mm), grain number of main panicle (142.0–367.0), percentage of seed setting (0.8–99.0%), 1000-grain weight (19.7–33.8 g) and time from germination to panicle emergence (90.0–108.0 days). Most of the variable coefficients were above 20% (the highest was 40.8%). Through pedigree selection of these plants, genetically stable lines were obtained, which are useful for rice breeding. Results from amplified fragment length polymorphism (AFLP) analysis showed that several rice lines contained extensive genetic variations, which included disappearance of rice parental bands and/or appearance of novel bands.

Type
Research Papers
Copyright
Copyright © China Agricultural University 2008

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Footnotes

First published in Journal of Agricultural Biotechnology 2008, 16(2): 320–325

References

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