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Frontiers of Agricultural Science and Engineering

ISSN 2095-7505

ISSN 2095-977X(Online)

CN 10-1204/S

邮发代号 80-906

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Frontiers of Agricultural Science and Engineering  2020, Vol. 7 Issue (4): 523-529   https://doi.org/10.15302/J-FASE-2019281
  本期目录
Characterization of grain cadmium concentration in indica hybrid rice
Kai WANG1,2,3, Qunfeng ZHOU1,3, Tianze YAN1,3, Shilong XU1,3, Longyi ZHAO1,3, Weicheng WANG4, Zhigang JIN4, Peng QIN1,3, Chenjian FU1,3, Liangbi CHEN2(), Yuanzhu YANG1,2,3()
1. Key Laboratory of Southern Rice Innovation & Improvement, Ministry of Agriculture and Rural Affairs, Yuan Longping High-Tech Agriculture Co., Ltd., Changsha 410000, China
2. Department of Botany, College of Life Sciences, Hunan Normal University, Changsha 410081, China
3. Hunan Engineering Laboratory for Disease and Pest Resistant Rice Breeding, Yahua Seeds Science Academy of Hunan, Changsha 410000, China
4. Seed Management Service Station of Hunan, Changsha 410000, China
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Abstract：

As a consequence of contamination of soil with heavy metals, cadmium accumulation in grain is of great concern worldwide, but especially in southern China. It is important to evaluate the Cd accumulation potential of grain before or when examining and approving new cultivars. An evaluation method and criteria for verifying Cd accumulation potential in rice are proposed, and the Cd accumulation potential of 56 mid-season indica hybrids collected from the provincial cultivar trials in 2016 were investigated. Genotype, environment and their interactions strongly affected the variation in grain Cd accumulation. Two hybrids were identified as slightly Cd accumulating. Hybrids with slight Cd accumulation potential would be suitable for safe grain production on polluted land (total Cd under 2.0 mg·kg−1) in Hunan Province (China) and should be considered for new cultivar evaluation and approval. This evaluation method and criterion could be applied for certifying Cd accumulation potential of rice cultivars.
Key words： accumulation    cadmium    hybrid    methodology    rice
收稿日期: 2019-02-02      出版日期: 2020-11-06
Corresponding Author(s): Liangbi CHEN,Yuanzhu YANG   
 引用本文:   
. [J]. Frontiers of Agricultural Science and Engineering, 2020, 7(4): 523-529.
Kai WANG, Qunfeng ZHOU, Tianze YAN, Shilong XU, Longyi ZHAO, Weicheng WANG, Zhigang JIN, Peng QIN, Chenjian FU, Liangbi CHEN, Yuanzhu YANG. Characterization of grain cadmium concentration in indica hybrid rice. Front. Agr. Sci. Eng. , 2020, 7(4): 523-529.
 链接本文:  
https://academic.hep.com.cn/fase/CN/10.15302/J-FASE-2019281
https://academic.hep.com.cn/fase/CN/Y2020/V7/I4/523
Treatment Total soil Cd concentration/(mg·kg−1) Bio-available Cd concentration/(mg·kg−1) pH Total soil organic matter content/% Cd accumulation/(mg·kg−1) Percentage of brown rice Cd under the limit
Brown rice Hull A B
T1 0.25 0.11 5.87 2.61 0.092 (0.010–0.374) 0.049 (0.010–0.124) 94.6 100.0
T2 0.59 0.25 6.11 2.93 0.269 (0.048–0.619) 0.086 (0.024–0.245) 37.5 83.9
T3 0.97 0.49 5.79 3.39 0.446 (0.047–1.557) 0.194 (0.031–0.855) 26.8 58.9
T4 2.18 0.95 5.95 3.17 0.779 (0.139–2.753) 0.257 (0.062–1.258) 3.6 21.4
Tab.1  
Rating Total soil Cd concentration/(mg·kg−1), pH 5.5–6.5 Cd accumulation potential
0.25±0.05 0.6±0.05 1.0±0.1 2.0±0.2
1 < 0.2 < 0.2 < 0.2 < 0.2 Slight
2 < 0.2 < 0.2 < 0.2 ≥ 0.2 Low
3 < 0.2 < 0.2 ≥ 0.2 ≥ 0.2 Lower
4 < 0.2 ≥ 0.2 ≥ 0.2 ≥ 0.2 Moderate
5 ≥ 0.2 ≥ 0.2 ≥ 0.2 ≥ 0.2 High
Other Unable to rate Undetermined
Tab.2  
Source df Brown rice Hull
MS SS% MS SS%
Environment 3 12.71*** 37.62 1.42*** 21.33
Genotype 55 0.63*** 34.38 0.13*** 34.52
GEI 165 0.13*** 20.87 0.04*** 33.24
Rep (environment) 8 0.02 0.17 0.00 0.07
Error 423 0.02 6.96 0.01 10.84
Total 654
Tab.3  
Treatment T1 T2 T3 T4
T1 1.000
T2 0.750*** 1.000
T3 0.805*** 0.923*** 1.000
T4 0.752*** 0.744*** 0.768*** 1.000
Tab.4  
Fig.1  
Fig.2  
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