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Volume 9 Issue 1
Jan.  2018
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Article Navigation >  Journal of Tropical Biology  > 2018  >  9(1): 69-75

ZHAO Shuai, QUE Yanpeng, XIA Dongnan, FU Wenying. Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress[J]. Journal of Tropical Biology, 2018, 9(1): 69-75. doi: 10.15886/j.cnki.rdswxb.2018.01.09
Citation: ZHAO Shuai, QUE Yanpeng, XIA Dongnan, FU Wenying. Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress[J]. Journal of Tropical Biology, 2018, 9(1): 69-75. doi: 10.15886/j.cnki.rdswxb.2018.01.09
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Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress

doi: 10.15886/j.cnki.rdswxb.2018.01.09

  • Institute of Tropical Agriculture and Forestry, Hainan University, Hainkou, Hainan 570228, China

  • Received Date: 2017-08-18
  • Rev Recd Date: 2017-10-27
  • Five accessions of wild germplasm of Morinda citrifolia Linn,WT1 a,WT1 b,WT2,WT3 and WT4,were collected in the Southeast Asia and used as experimental materials.They were treated indoor with low temperature to determine and analyze their physiological indexes.Cold resistance ability of the five accessions was evaluated by the membership function method,and then verified in field trials through experimental observation.The results showed that conductivity,MDA content and POD activity could be used as reference indices for evaluation of the cold resistance of M.citrifolia Linn.The accession WT1 a showed the highest cold resistance,while the accession WT4 had the lowest cold resistance.It is inferred that the time threshold for cold injury of M.citrifolia Linn be 4-6 days after low temperature stress was imposed on M.citrifolia Linn.
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Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress

doi: 10.15886/j.cnki.rdswxb.2018.01.09
  • Institute of Tropical Agriculture and Forestry, Hainan University, Hainkou, Hainan 570228, China
  • Received Date: 2017-08-18
  • Rev Recd Date: 2017-10-27

Abstract: Five accessions of wild germplasm of Morinda citrifolia Linn,WT1 a,WT1 b,WT2,WT3 and WT4,were collected in the Southeast Asia and used as experimental materials.They were treated indoor with low temperature to determine and analyze their physiological indexes.Cold resistance ability of the five accessions was evaluated by the membership function method,and then verified in field trials through experimental observation.The results showed that conductivity,MDA content and POD activity could be used as reference indices for evaluation of the cold resistance of M.citrifolia Linn.The accession WT1 a showed the highest cold resistance,while the accession WT4 had the lowest cold resistance.It is inferred that the time threshold for cold injury of M.citrifolia Linn be 4-6 days after low temperature stress was imposed on M.citrifolia Linn.

ZHAO Shuai, QUE Yanpeng, XIA Dongnan, FU Wenying. Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress[J]. Journal of Tropical Biology, 2018, 9(1): 69-75. doi: 10.15886/j.cnki.rdswxb.2018.01.09
Citation: ZHAO Shuai, QUE Yanpeng, XIA Dongnan, FU Wenying. Evaluation of Cold Resistance of Five Accessions of Morinda citrifolia Linn Germplasm under Low Temperature Stress[J]. Journal of Tropical Biology, 2018, 9(1): 69-75. doi: 10.15886/j.cnki.rdswxb.2018.01.09
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