<FONT face="Verdana">Relationship Between IndicaJaponica Index of Parents and Hybrid Yield and Rice Quality Traits in Japonica Hybrid Rice in Northern China</FONT>

WANG Yanrong,QIU Fulin,HUA Zetian,DAI Guijin

doi:10.3969/j.issn.1001-7216.2010.02.07

2010 , Vol. 24 >Issue 2: 145 - 150

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.02.07

研究报告

Relationship Between IndicaJaponica Index of Parents and Hybrid Yield and Rice Quality Traits in Japonica Hybrid Rice in Northern China

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Rice Research Institute of Liaoning Province, Shenyang 110101, China

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-03-10

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Abstract

The parental indicajaponica index and hybrid yield and rice quality traits were investigated with the main parents and their combinations of japonica hybrid rice in northern China according to the Cheng′s index(Chi) as well as analysis by molecular markers. Parental Chi and ADi(indica component value) ranged from 13.5-19.3 and 0.12-0.38, respectively. Some parents differed in classification by Chi and ADi. The Chi of male parent showed a closer relationship with heterosis and hybrid traits than that of female parent, but ADi was on the contrary. There was a closer relation between parental difference in Chi and yield heterosis and hybrid traits than that in ADi. The indicajaponica indices of the parents and their difference presented conic relationships to yield heterosis and hybrid traits and there existed a critical extremum. The directions of correlation of indicajaponica index of the parents and their difference with yieldrelated traits were opposite to those with rice quality traits. Therefore, in order to obtain best yield heterosis and hybrid performance in high yield and good quality, the female and male parents should be properly combined in indicajaponica index.

Key words： japonica hybrid rice; indicajaponica index; Cheng′s index; simple requence repeats; yield; rice quality

Cite this article

WANG Yanrong,QIU Fulin,HUA Zetian,DAI Guijin . Relationship Between IndicaJaponica Index of Parents and Hybrid Yield and Rice Quality Traits in Japonica Hybrid Rice in Northern China[J]. Chinese Journal OF Rice Science, 2010 , 24(2) : 145 -150 . DOI: 10.3969/j.issn.1001-7216.2010.02.07

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