Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance
Extreme temperatures are considered one of the main constraints that limit the growth and development of rice. We elucidated the root and shoot developmental plasticity of 64 rice genotypes during early seedling establishment, using the sunlit plant growth chambers at 22/14 (low), 30/22 (optimum), a...
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MDPI AG
2021-01-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/11/1/112 |
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| author | Kambham Raja Reddy Akanksha Seghal Salah Jumaa Raju Bheemanahalli Naqeebullah Kakar Edilberto D. Redoña Chathurika Wijewardana Firas Ahmed Alsajri Daryl Chastain Wei Gao Shasthree Taduri Ajaz A. Lone |
| author_facet | Kambham Raja Reddy Akanksha Seghal Salah Jumaa Raju Bheemanahalli Naqeebullah Kakar Edilberto D. Redoña Chathurika Wijewardana Firas Ahmed Alsajri Daryl Chastain Wei Gao Shasthree Taduri Ajaz A. Lone |
| author_sort | Kambham Raja Reddy |
| collection | DOAJ |
| description | Extreme temperatures are considered one of the main constraints that limit the growth and development of rice. We elucidated the root and shoot developmental plasticity of 64 rice genotypes during early seedling establishment, using the sunlit plant growth chambers at 22/14 (low), 30/22 (optimum), and 38/30 °C (high) day/night temperatures. Low temperature severely inhibited 23 traits, such as shoot (68%), root (57%), and physiological (35%) attributes. On the contrary, the high temperature positively affected most of the shoot (48%) and root (31%) traits, except root diameter and root/shoot ratio, compared with the optimum. Alternatively, leaf chlorophyll fluorescence-associated parameters declined under low (34%) and high (8%) temperatures. A weak correlation between cumulative high-temperature response index (CHTRI) and cumulative low-temperature response index (CLTRI) indicates the operation of different low- and high-temperature tolerance mechanisms at the early seedling stage. Groups of distinct rice genotypes associated with low or high-temperature tolerance were selected based on CHTRI and CLTRI. The genotypes that commonly performed well under low and high temperatures (IR65600-81-5-2-3, CT18593-1-7-2-2-5, RU1504114, RU1504122, Bowman, and INIA Tacuari) will be valuable genetic resources for breeders in developing early-season high- and low-temperature-tolerant genotypes for a broad range of both tropical and temperate rice-growing environments. |
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| language | English |
| last_indexed | 2024-03-09T05:33:59Z |
| publishDate | 2021-01-01 |
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| series | Agronomy |
| spelling | doaj.art-f1c21a591a054660936f7eed42c575872023-12-03T12:30:47ZengMDPI AGAgronomy2073-43952021-01-0111111210.3390/agronomy11010112Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature ToleranceKambham Raja Reddy0Akanksha Seghal1Salah Jumaa2Raju Bheemanahalli3Naqeebullah Kakar4Edilberto D. Redoña5Chathurika Wijewardana6Firas Ahmed Alsajri7Daryl Chastain8Wei Gao9Shasthree Taduri10Ajaz A. Lone11Department of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADelta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADelta Research and Extension Center, Mississippi State University, 82 Stoneville Road, Stoneville, MS 38776, USAUSDA UV-B Monitoring and Research Program, Natural Resource Ecology Lab., Colorado State University, Fort Collins, CO 80523, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USADepartment of Plant and Soil Sciences, Box 9555, 117 Dorman Hall, Mississippi State University, Mississippi State, MS 39762, USAExtreme temperatures are considered one of the main constraints that limit the growth and development of rice. We elucidated the root and shoot developmental plasticity of 64 rice genotypes during early seedling establishment, using the sunlit plant growth chambers at 22/14 (low), 30/22 (optimum), and 38/30 °C (high) day/night temperatures. Low temperature severely inhibited 23 traits, such as shoot (68%), root (57%), and physiological (35%) attributes. On the contrary, the high temperature positively affected most of the shoot (48%) and root (31%) traits, except root diameter and root/shoot ratio, compared with the optimum. Alternatively, leaf chlorophyll fluorescence-associated parameters declined under low (34%) and high (8%) temperatures. A weak correlation between cumulative high-temperature response index (CHTRI) and cumulative low-temperature response index (CLTRI) indicates the operation of different low- and high-temperature tolerance mechanisms at the early seedling stage. Groups of distinct rice genotypes associated with low or high-temperature tolerance were selected based on CHTRI and CLTRI. The genotypes that commonly performed well under low and high temperatures (IR65600-81-5-2-3, CT18593-1-7-2-2-5, RU1504114, RU1504122, Bowman, and INIA Tacuari) will be valuable genetic resources for breeders in developing early-season high- and low-temperature-tolerant genotypes for a broad range of both tropical and temperate rice-growing environments.https://www.mdpi.com/2073-4395/11/1/112cold and heat temperature toleranceearly growth stagericerootscumulative stress response indices |
| spellingShingle | Kambham Raja Reddy Akanksha Seghal Salah Jumaa Raju Bheemanahalli Naqeebullah Kakar Edilberto D. Redoña Chathurika Wijewardana Firas Ahmed Alsajri Daryl Chastain Wei Gao Shasthree Taduri Ajaz A. Lone Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance Agronomy cold and heat temperature tolerance early growth stage rice roots cumulative stress response indices |
| title | Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance |
| title_full | Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance |
| title_fullStr | Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance |
| title_full_unstemmed | Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance |
| title_short | Morpho-Physiological Characterization of Diverse Rice Genotypes for Seedling Stage High- and Low-Temperature Tolerance |
| title_sort | morpho physiological characterization of diverse rice genotypes for seedling stage high and low temperature tolerance |
| topic | cold and heat temperature tolerance early growth stage rice roots cumulative stress response indices |
| url | https://www.mdpi.com/2073-4395/11/1/112 |
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