Crops ›› 2017, Vol. 33 ›› Issue (4): 105-112.doi: 10.16035/j.issn.1001-7283.2017.04.018

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Correlation Analysis of Methane Transport Capacity and Root Characteristics in Rice

Zhong Juan,Fu Zhiqiang,Liu Li,Zhu Zhijuan,Zheng Huabin   

  1. Agronomy College,Hunan Agricultural University/Collaborative Innovation Center for Modern Production of Multiple Cropping System Paddy Area,Changsha 410128,Hunan,China
  • Received:2017-04-11 Revised:2017-06-23 Online:2017-08-15 Published:2018-08-26
  • Contact: Zhiqiang Fu

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Abstract:

In order to investigate the key root characteristics affecting rice plant methane transport, the rice root parameters of different rice cultivars were studied in relation to the methane transport capacity under the condition of hydroponic conditions. The results showed that there were significant positive correlations between the root specific surface area, root active absorption area and the methane transport capacity in early rice. There was a significant positive correlation between early rice root vitality and methane transport capacity. The root index which had negative correlation with methane transport capacity included root weight, the longest root length. Therefore, early rice plants with low root vigor and relatively high root weight may have weak methane transport capacity.

Key words: Rice, Methane transport, Root system index, Correlation

Table 1

All of the early and late rice varieties"

类别Sort 品种Varieties
杂交早稻Hybrid early rice 陆两优171 Luliangyou 171
潭原优4903 Tanyuanyou 4903
株两优17 Zhuliangyou 17
陆两优996 Luliangyou 996
株两优819 Zhuliangyou 819
金优268 Jinyou 268
株两优189 Zhuliangyou 189
两优早17 Liangyouzao 17
长两优35 Changliangyou 35
株两优19 Zhuliangyou 19
陆两优4026 Luliangyou 4026
常规早稻Conventional early rice 湘早籼45 Xiangzaoxian 45
中早39 Zhongzao 39
中嘉早17 Zhongjiazao 17
湘早籼32 Xiangzaoxian 32
湘早籼6 Xiangzaoxian 6
湘早籼24 Xiangzaoxian 24
杂交晚稻Hybrid late rice 准两优608 Zhunliangyou 608
深优9586 Shenyou 9586
凤两优丝苗Fengliangyousimiao
丰优800 Fengyou 800
C两优7号C liangyou 7
资优299 Ziyou 299
玖两优644 Jiuliangyou 644
T优15 T you 15
丰源优299 Fengyuanyou 299
常规晚稻Conventional late rice 湘晚籼13 Xiangwanxian 13
玉珍香Yuzhenxiang
湘晚籼17 Xiangwanxian 17

Fig.1

Training-measuring gas one box of rice"

Fig.2

A schematic diagram of methane gas measurement in a sealed box"

Fig.3

Changes of methane transfer rate of different conventional early rice at different stages"

Fig.4

Changes of methane transfer rate of different hybrid early rice at different stages"

Fig.5

Changes of methane transfer rate of different conventional late rice at different stages"

Fig.6

Changes of methane transfer rate of different hybrid late rice at different stages"

Table 2

Average methane transport rate of different varieties during the whole growth period"

类别
Sort		 品种
Varieties		 甲烷传输速率
Methane transport
rate [mmol/(m2·s)]		 类别
Sort		 品种
Varieties		 甲烷传输速率
Methane transport
rate [mmol/(m2·s)]
杂交早稻 陆两优171 Luliangyou 171 0.670bB 杂交晚稻 准两优608 Zhunliangyou 608 0.069eE
Hybrid early rice 潭原优4903 Tanyuanyou 4903 0.154efgEFG Hybrid late rice 深优9586 Shenyou 9586 0.131eCDE
株两优17 Zhuliangyou 17 0.127fgFG 凤两优丝苗Fengliangyousimiao 0.332cdBC
陆两优996 Luliangyou 996 0.243cdefgEFG 丰优800 Fengyou 800 0.631aA
株两优819 Zhuliangyou 819 0.360cCDE C两优7号C liangyou 7 0.372cdB
金优268 Jinyou 268 0.564bBCD 资优299 Ziyou 299 0.127eDE
株两优189 Zhuliangyou 189 0.236cdefgEFG 玖两优644 Jiuliangyou 644 0.107eDE
两优早17 Liangyouzao 17 0.134fgEFG T优15 T you 15 0.068eE
长两优35 Changliangyou 35 0.117gG 丰源优299 Fengyuanyou 299 0.054eE
株两优19 Zhuliangyou 19 0.586bBC 常规晚稻 湘晚籼13 Xiangwanxian 13 0.062eE
陆两优4026 Luliangyou 4026 0.297cdefEFG Conventional late rice 玉珍香Yuzhenxiang 0.025eE
常规早稻 湘早籼45 Xiangzaoxian 45 1.121aA 湘晚籼17 Xiangwanxian 17 0.108eDE
Conventional early rice 中早39 Zhongzao 39 0.103gG
中嘉早17 Zhongjiazao 17 0.143fgEFG
湘早籼32 Xiangzaoxian 32 0.351cdDEF
湘早籼6 Xiangzaoxian 6 0.146fgEFG
湘早籼24 Xiangzaoxian 24 0.240cdefgEFG

Table 3

Analysis on the correlation between root index and methane transport rate in early rice"

根系指标Root index CH4TR Fe3+-PS SSA AAA AAAP RP LRL ROA RW
Fe3+-PS -0.094ns
SSA -0.486** -0.395**
AAA -0.320* -0.027ns -0.321*
AAAP -0.014ns -0.235ns -0.109ns -0.461**
RP -0.132ns -0.497** -0.627** -0.346** -0.456**
LRL -0.280* -0.143ns -0.325** -0.210ns -0.063ns -0.175ns
ROA -0.038ns -0.500** -0.118ns -0.326** -0.778** -0.314* -0.207ns
RW -0.405** -0.289* -0.530** -0.783** -0.296* -0.548** -0.216ns -0.122ns
TAA -0.124ns -0.687** -0.382** -0.754** -0.857** -0.334** -0.364** -0.196ns -0.344**

Table 4

Analysis on the correlation between root index and methane transport rate in late rice"

根系指标Root index CH4TR Fe3+-PS SSA AAA AAAP RP LRL ROA RW
Fe3+-PS -0.496**
SSA -0.342** -0.033ns
AAA -0.420** -0.543** -0.264*
AAAP -0.058ns -0.407** -0.114ns -0.072ns
RP -0.033ns -0.214ns -0.561** -0.553** -0.033ns
LRL -0.004ns -0.165ns -0.573** -0.060ns -0.040ns -0.448**
ROA -0.038ns -0.199ns -0.438** -0.495** -0.048ns -0.418** -0.456**
RW -0.013ns -0.475** -0.459** -0.618** -0.213ns -0.403** -0.306* -0.371**
TAA -0.121ns -0.241ns -0.423** -0.784** -0.636** -0.182ns -0.111ns -0.502** -0.328**
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