Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development
Soil moisture condition is a major factor that affects root system development and thus, crop production. This study aimed to evaluate genotypic variations of cassava in root system structures and their responses to different soil moisture conditions by examining various root traits including produc...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2009-01-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1626/pps.12.462 |
| _version_ | 1811237139534315520 |
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| author | Juvy Oliva Q. Subere Dioscoro Bolatete Reynaldo Bergantin Andreu Pardales Jedi Jim Belmonte Algerico Mariscal Rodrigo Sebidos Akira Yamauchi |
| author_facet | Juvy Oliva Q. Subere Dioscoro Bolatete Reynaldo Bergantin Andreu Pardales Jedi Jim Belmonte Algerico Mariscal Rodrigo Sebidos Akira Yamauchi |
| author_sort | Juvy Oliva Q. Subere |
| collection | DOAJ |
| description | Soil moisture condition is a major factor that affects root system development and thus, crop production. This study aimed to evaluate genotypic variations of cassava in root system structures and their responses to different soil moisture conditions by examining various root traits including production and elongation of adventitious roots and their laterals. Four pot experiments were conducted and different genotypes of various backgrounds were grown under well-watered, droughted, droughted to rewatered conditions. One field experiment was also conducted with selected genotypes till maturity. Results showed that substantial genotypic variations exist in root system structure, and the effects of the soil moistures were significant for most of the root traits. The principal component analysis (PCA) showed that the lateral root development mainly accounted for the variations in root system structure regardless of soil moisture conditions. The PCA on the differences between droughted and well-watered control, and droughted-rewatered and the control further indicated that the branching ability of adventitious roots was mainly responsible for the root system responses to drought as well as rewatering. Genotypic ranking in root system responses to drought was almost consistent among the pots and field experiments. Genotypicvariations in rooting depth were relatively small while those in horizontal spread were apparent in the field experiment.The ability to maintain adventitious root elongation under drought, resulting in relatively large horizontal spread of root system and to recover sharply from drought by lateral root branching may be related to good growth and yield performance under field. |
| first_indexed | 2024-04-12T12:19:49Z |
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| id | doaj.art-4b4deef3e2084ab49c3303ff2bc68c2c |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-04-12T12:19:49Z |
| publishDate | 2009-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-4b4deef3e2084ab49c3303ff2bc68c2c2022-12-22T03:33:19ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082009-01-0112446247410.1626/pps.12.46211644991Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System DevelopmentJuvy Oliva Q. Subere0Dioscoro Bolatete1Reynaldo Bergantin2Andreu Pardales3Jedi Jim Belmonte4Algerico Mariscal5Rodrigo Sebidos6Akira Yamauchi7Graduate School of Bioagricultural Sciences, Nagoya UniversityPhilippine Root Crop Research and Training Center, Visayas State UniversityPhilippine Root Crop Research and Training Center, Visayas State UniversityPhilippine Root Crop Research and Training Center, Visayas State UniversityPhilippine Root Crop Research and Training Center, Visayas State UniversityPhilippine Root Crop Research and Training Center, Visayas State UniversityVisayas State UniversityGraduate School of Bioagricultural Sciences, Nagoya UniversitySoil moisture condition is a major factor that affects root system development and thus, crop production. This study aimed to evaluate genotypic variations of cassava in root system structures and their responses to different soil moisture conditions by examining various root traits including production and elongation of adventitious roots and their laterals. Four pot experiments were conducted and different genotypes of various backgrounds were grown under well-watered, droughted, droughted to rewatered conditions. One field experiment was also conducted with selected genotypes till maturity. Results showed that substantial genotypic variations exist in root system structure, and the effects of the soil moistures were significant for most of the root traits. The principal component analysis (PCA) showed that the lateral root development mainly accounted for the variations in root system structure regardless of soil moisture conditions. The PCA on the differences between droughted and well-watered control, and droughted-rewatered and the control further indicated that the branching ability of adventitious roots was mainly responsible for the root system responses to drought as well as rewatering. Genotypic ranking in root system responses to drought was almost consistent among the pots and field experiments. Genotypicvariations in rooting depth were relatively small while those in horizontal spread were apparent in the field experiment.The ability to maintain adventitious root elongation under drought, resulting in relatively large horizontal spread of root system and to recover sharply from drought by lateral root branching may be related to good growth and yield performance under field.http://dx.doi.org/10.1626/pps.12.462CassavaDroughtDrought recoveryLateral rootsPlasticityPrincipal component analysis |
| spellingShingle | Juvy Oliva Q. Subere Dioscoro Bolatete Reynaldo Bergantin Andreu Pardales Jedi Jim Belmonte Algerico Mariscal Rodrigo Sebidos Akira Yamauchi Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development Plant Production Science Cassava Drought Drought recovery Lateral roots Plasticity Principal component analysis |
| title | Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development |
| title_full | Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development |
| title_fullStr | Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development |
| title_full_unstemmed | Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development |
| title_short | Genotypic Variation in Responses of Cassava (Manihot esculenta Crantz) to Drought and Rewatering: Root System Development |
| title_sort | genotypic variation in responses of cassava manihot esculenta crantz to drought and rewatering root system development |
| topic | Cassava Drought Drought recovery Lateral roots Plasticity Principal component analysis |
| url | http://dx.doi.org/10.1626/pps.12.462 |
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