研究报告

Creation and Characteristics of Indica Type Cytoplasmic Male Sterile Rice Line Gaoguang A Labeled with AlbinotoZebra Leaf Marker

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  • 1 Institute of Agricultural Science in Ganzhou of Jiangxi Province, Ganzhou 341000, China; 2 Ganzhou Comprehensive Experiment Station of National Rice Industrial Technology System, Ganzhou 341000, China;3 Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education, Jiangxi Agricultural University, Nanchang 330045, China; *Corresponding author, E-mail: chjfkarl@163.com

Received date: 1900-01-01

  Revised date: 1900-01-01

  Online published: 2010-11-10

Abstract

A new mutant with albinotozebra leaf color trait was selected from the progeny of the indica rice maintainer line D57B by irradiation with 300 Gy 60Co gamma rays. The mutant was then backcrossed with D57A as the recurrent parent, and finally a novel type of cytoplasmic male sterile rice line, Gaoguang A, labeled with albinotozebra leaf color marker was developed through continuous selection. The mutant trait was controlled by a single recessive nuclear gene, expressing albino (first to sixth leaves) and zebra leaves (from the sixth leaf) and greenish albino young panicles. Gaoguang A belongs to early maturity earlyseason indica rice, with a duration from seeding to heading of about 65 days. Compared with D57B, Gaoguang A had lower plant height and longer flag leaf, which are beneficial to pollination and fertilization, high seed setting rate and fully filled grain number of hybrids, whereas its seed germination rate was slower. The other agronomic traits of Gaoguang A were similar to D57B. Gaoguang A had some excellent out crossing characteristics, such as high stigma exsertion rate, strong vitality of stigma, long flowering time in a day, small tension angle of floret, low closed glume rate, sensitivity to gibberellins. It also had excellent combining ability with other varieties. In the mixed sowing experiment of Gaoguang A and hybrid rice combinations, the weaker competitiveness of young seedlings of Gaoguang A resulted in natural death of its young seedlings. Finally, the prospects of utilizing Gaoguang A in the threeline hybrid rice production were discussed.

Cite this article

ZHANG Hong-lin,CHENG Jian-feng,LIU Yue-qing,ZHONG Xiao-ying,ZHANG Rui-xiang,LIU Hai-ping,ZHANG Pu . Creation and Characteristics of Indica Type Cytoplasmic Male Sterile Rice Line Gaoguang A Labeled with AlbinotoZebra Leaf Marker[J]. Chinese Journal OF Rice Science, 2010 , 24(6) : 587 -594 . DOI: 10.3969/j.issn.1001-7216.2010.06.005

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