<FONT face="Verdana">我国部分早籼品种及杂交早籼骨干亲本抽穗期遗传分析</FONT>

徐俊锋,  ,  ,魏祥进,江玲,陆广文,王洪俊,周振玲,万建民

doi:10.3969/j.issn.1001-7216.2010.03.001

中国水稻科学 >

2010 , Vol. 24 >Issue 3: 215 - 222

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.03.001

研究报告

我国部分早籼品种及杂交早籼骨干亲本抽穗期遗传分析

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¹南京农业大学作物遗传与种质创新国家重点实验室，江苏南京 210095； ²浙江省农业科学院农产品质量标准研究所，浙江杭州 310021； ³中国农业科学院作物科学研究所，北京 100081； # 共同第一作者； *通讯联系人， E-mail: wanjm@njau.edu.cn

收稿日期: 1900-01-01

修回日期: 1900-01-01

网络出版日期: 2010-05-10

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Genetic Analysis of Heading Date of Some Early Season Indica Rice Cultivars and Hybrid Rice Parents in China

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¹State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China; ²Institute of Quality Standards for Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; ³ Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China; # These authors contributed equally to this paper; *Corresponding author, E-mail: wanjm@njau.edu.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-05-10

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摘要

设置长、短日照和高、低温4种环境，分析了我国长江中下游和华南地区早籼水稻品种和杂交早籼骨干亲本共19份材料的抽穗期光温敏感性及基本营养生长性。结果表明，这19份早籼材料（包括杂交稻亲本）都表现出弱感光性，其中16份材料对温度比较敏感。这些早籼材料的基本营养生长性整体较弱，但是个体间表现出一定的差异。抽穗期长短与每个材料的基本营养生长性呈显著线性相关。利用一套抽穗期主基因近等基因系对这些早籼材料抽穗期基因型进行了分析。结果表明，所有早籼材料均带有隐性非感光位点hd2,大多数早籼材料都带有显性早熟基因Ef1,而在Se1和E1两个主效感光基因位点，所有早籼材料不带或只带有一个感光等位基因。这些结果从基因型角度揭示了早籼材料具有弱感光性和较强感温性，是其适合在我国华南双季稻作区和华中单双季稻作区作早稻种植的原因，为早籼水稻品种的选育及推广提供了重要依据。

关键词： 早籼稻; 抽穗期; 遗传分析; 感光性; 感温性; 基本营养生长性

本文引用格式

徐俊锋, , ,魏祥进,江玲,陆广文,王洪俊,周振玲,万建民 . 我国部分早籼品种及杂交早籼骨干亲本抽穗期遗传分析[J]. 中国水稻科学, 2010 , 24(3) : 215 -222 . DOI: 10.3969/j.issn.1001-7216.2010.03.001

Abstract

Heading date is one of the most important traits for the adaptation of rice to different cultivation areas and cropping seasons. Early season indica rice cultivars play an important role in rice production in China. Heading dates of 19 early season indica rice cultivars and hybrid rice parental lines from the middlelower region of the Yangtze River Valley and South China were investigated and their sensitivities to photoperiod and temperature were analyzed. Among the 19 rice materials, 16 were sensitive to temperature， and all showed a weak photoperiod sensitivity. The basic vegetative growth of most of these early season indica materials were weak but differed. A regression analysis showed that heading date was significantly correlated with basic vegetative growth. Genetic analyses based on a set of heading date near isogenic lines revealed that all the early season indica cultivars or hybrid parents carried the recessive photoperiod insensitivity allele hd2, and most of these materials carried the dominant earlyheading gene Ef1. All these materials carried either one or no photoperiod sensitivitydetermining dominant allele at E1 and Se1. These results indicate that with weak photoperiod sensitivity and short basic vegetative growth phase, these early season indica cultivars are suitable to be grown in the middlelower region of the Yangtze River Valley and South China as early season cultivars. It could be useful for breeding new early season indica cultivars.

Key words： early season indica rice; heading date; genetic analysis; photoperiod sensitivity; temperature sensitivity; basic vegetative growth

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