<FONT face="Verdana">白化转斑叶籼型水稻不育系高光A的创制及特征特性</FONT>

张红林,程建峰,刘跃清,钟晓英,张瑞祥,刘海平,张璞

doi:10.3969/j.issn.1001-7216.2010.06.005

中国水稻科学 >

2010 , Vol. 24 >Issue 6: 587 - 594

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.06.005

研究报告

白化转斑叶籼型水稻不育系高光A的创制及特征特性

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¹江西省赣州市农业科学研究所, 江西赣州 341000; ²国家水稻产业技术体系赣州综合试验站，江西赣州 341000； ³江西农业大学教育部作物生理生态与遗传育种重点实验室, 江西南昌330045; *通讯联系人, E-mail: chjfkarl@163.com

收稿日期: 1900-01-01

修回日期: 1900-01-01

网络出版日期: 2010-11-10

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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; ²Ganzhou 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

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摘要

以籼型保持系D57B为起始材料，利用300 Gy的 60Coγ射线辐照干种子诱发突变，获得6叶前整株叶片全白而后叶脉白化其他部分转绿的突变体，经1次杂交和6次回交选育出一个携带白化转斑型叶色标记的籼型三系不育系高光A。该不育系白化转斑型叶色突变性状受单隐性核基因控制，1~6叶白化，6叶后呈白化斑叶，幼穗白化带绿；播始历期65 d左右，属早籼早熟类型。与D57B相比，高光A植株稍矮且剑叶变长，有利于授粉(受精)，提高杂种结实率和获得饱满的杂交种子，但种子萌发稍慢，其他农艺性状与D57B相仿。高光A具有高柱头外露率、强柱头生活力、长花时、小颖花张角、低闭颖率、对赤霉素敏感和强配合力等优良异交特性，杂种优势明显。高光A与杂交稻混播时，其幼苗竞争力弱。最后对高光A在三系杂交水稻生产中的应用前景作了讨论。

关键词： 水稻细胞质雄性不育系; 白化转斑型叶色标记; 杂种纯度; 生物学特性; 农艺性状; 育种

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张红林,程建峰,刘跃清,钟晓英,张瑞祥,刘海平,张璞 . 白化转斑叶籼型水稻不育系高光A的创制及特征特性[J]. 中国水稻科学, 2010 , 24(6) : 587 -594 . DOI: 10.3969/j.issn.1001-7216.2010.06.005

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.

Key words： cytoplasmic male sterile rice line; albinotozebra leaf color marker; hybrid seed purity; biological characteristics; agronomic traits; breeding

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