Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape
Terminal drought stress is one of the restrictive factors in rice production and is expected to upsurge under the current situation of climate change. The study evaluated the performance of 2030 rice genotypes under continuous drought stress conditions based on days to flowering (DF). The genotypes...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-05-01
|
| Series: | Plants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2223-7747/9/5/609 |
| _version_ | 1797568287342592000 |
|---|---|
| author | Muhammad Shafiq Ahmad Bingrui Wu Huaqi Wang Dingming Kang |
| author_facet | Muhammad Shafiq Ahmad Bingrui Wu Huaqi Wang Dingming Kang |
| author_sort | Muhammad Shafiq Ahmad |
| collection | DOAJ |
| description | Terminal drought stress is one of the restrictive factors in rice production and is expected to upsurge under the current situation of climate change. The study evaluated the performance of 2030 rice genotypes under continuous drought stress conditions based on days to flowering (DF). The genotypes under augmented randomized complete block design were sown in May/June of 2017 and 2018 in the field with movable rainout that resulted in huge genetic diversity among the accessions. Descriptive statistics confirmed clear variation among accessions on growth duration, plant height to leaf, plant height to panicle, and germination percentage. Correlation, chemometric, and agglomerative hierarchical cluster analyses were performed that categorized the germplasm into 10 groups. Genotypes in clusters VIII and IX (drought-resistant) revealed better agronomic performance in terms of reduced days to flowering, but conversely taller plant height and higher maturity (%) under severe stress. Genotypes in clusters IV, V, and X were discovered to be drought-susceptible. The screened genotypes like Longjing 12, Longdun 102, Yanjing 22, Liaojing 27, Xiaohongbandao, Songjing 17, and Zaoshuqingsen can be utilized in rice breeding improvement programs for drought tolerance in terms of severe continuous drought, as well as terminal drought stress. |
| first_indexed | 2024-03-10T19:54:21Z |
| format | Article |
| id | doaj.art-3ee70287c4824c488a42d71bf68adf1d |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T19:54:21Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-3ee70287c4824c488a42d71bf68adf1d2023-11-20T00:04:07ZengMDPI AGPlants2223-77472020-05-019560910.3390/plants9050609Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought EscapeMuhammad Shafiq Ahmad0Bingrui Wu1Huaqi Wang2Dingming Kang3Department of Plant Genetics and Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, ChinaDepartment of Plant Genetics and Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, ChinaDepartment of Plant Genetics and Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, ChinaDepartment of Plant Genetics and Breeding, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, ChinaTerminal drought stress is one of the restrictive factors in rice production and is expected to upsurge under the current situation of climate change. The study evaluated the performance of 2030 rice genotypes under continuous drought stress conditions based on days to flowering (DF). The genotypes under augmented randomized complete block design were sown in May/June of 2017 and 2018 in the field with movable rainout that resulted in huge genetic diversity among the accessions. Descriptive statistics confirmed clear variation among accessions on growth duration, plant height to leaf, plant height to panicle, and germination percentage. Correlation, chemometric, and agglomerative hierarchical cluster analyses were performed that categorized the germplasm into 10 groups. Genotypes in clusters VIII and IX (drought-resistant) revealed better agronomic performance in terms of reduced days to flowering, but conversely taller plant height and higher maturity (%) under severe stress. Genotypes in clusters IV, V, and X were discovered to be drought-susceptible. The screened genotypes like Longjing 12, Longdun 102, Yanjing 22, Liaojing 27, Xiaohongbandao, Songjing 17, and Zaoshuqingsen can be utilized in rice breeding improvement programs for drought tolerance in terms of severe continuous drought, as well as terminal drought stress.https://www.mdpi.com/2223-7747/9/5/609traitterminal drought stressrainout shelterrice genotypeplant heightcluster |
| spellingShingle | Muhammad Shafiq Ahmad Bingrui Wu Huaqi Wang Dingming Kang Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape Plants trait terminal drought stress rainout shelter rice genotype plant height cluster |
| title | Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape |
| title_full | Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape |
| title_fullStr | Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape |
| title_full_unstemmed | Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape |
| title_short | Field Screening of Rice Germplasm (<i>Oryza sativa</i> L. ssp. <i>japonica</i>) Based on Days to Flowering for Drought Escape |
| title_sort | field screening of rice germplasm i oryza sativa i l ssp i japonica i based on days to flowering for drought escape |
| topic | trait terminal drought stress rainout shelter rice genotype plant height cluster |
| url | https://www.mdpi.com/2223-7747/9/5/609 |
| work_keys_str_mv | AT muhammadshafiqahmad fieldscreeningofricegermplasmioryzasativailsspijaponicaibasedondaystofloweringfordroughtescape AT bingruiwu fieldscreeningofricegermplasmioryzasativailsspijaponicaibasedondaystofloweringfordroughtescape AT huaqiwang fieldscreeningofricegermplasmioryzasativailsspijaponicaibasedondaystofloweringfordroughtescape AT dingmingkang fieldscreeningofricegermplasmioryzasativailsspijaponicaibasedondaystofloweringfordroughtescape |