<FONT face="Verdana">Physiological and Biochemical Characteristics in Flag Leaves of  a  Series  of Hybrid Rice Combinations  Derived from C815S at  the Late Growth Stage </FONT>

TANG  Wenbang, ZHANG  Guilian, XIAO  Yinghui, DENG  Huabing,FAN Ke,  LIU  Guohua, CHEN  Liyun*

doi:10.3969/j.issn.1001-7216.2010.02.11

2010 , Vol. 24 >Issue 2: 169 - 174

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.02.11

研究报告

Physiological and Biochemical Characteristics in Flag Leaves of a Series of Hybrid Rice Combinations Derived from C815S at the Late Growth Stage

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Rice Research Institute, Hunan Agricultural University, Changsha 410128, China; *Corresponding author, E-mail:chenly996@yahoo.com.cn

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-03-10

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Abstract

The contents of chlorophyll, soluble sugar, soluble protein and thiobarbituric acid reactive substance (TBARS),chlorophyll fluorescence parameters, net photosynthetic rate as well as the activities of superoxide dismutase (SOD) and peroxidase（POD） of flag leaves at the late growth stage were studied by using four hybrid rice combinations derived from C815S as material and Shanyou 63 as a control. The grain yields of the four hybrid rice combinations was 16.7% to 20.2% higher than that of Shanyou 63. Compared with Shangyou 63 the contents of chlorophyll, soluble sugar and soluble protein in flag leaves of a series of hybrid rice combinations derived from C815S were higher, while TBARS content was lower. The activities of SOD and POD were significantly higher than those of the control at 7 days after heading, and decreased more slowly. ΦPSII value and qP value of flag leaves decreased at the late growth stage, but ΦPSII value and qP value of flag leaves were higher than those of the control, while qN value increased and was lower than those of the control. The net photosynthetic rate of flag leaves was higher compared with the control. These results suggest that slow senescence and more strongly photosynthetic capability in flag leaves at the late growth stage is the physiological basis of hyrid rice combinations derived from C815S.

Key words： hybrid rice; physiological characteristics; biochemical characteristics; functional leaves

Cite this article

TANG Wenbang, ZHANG Guilian, XIAO Yinghui, DENG Huabing,FAN Ke, LIU Guohua, CHEN Liyun* . Physiological and Biochemical Characteristics in Flag Leaves of a Series of Hybrid Rice Combinations Derived from C815S at the Late Growth Stage [J]. Chinese Journal OF Rice Science, 2010 , 24(2) : 169 -174 . DOI: 10.3969/j.issn.1001-7216.2010.02.11

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