Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential
Increasing agricultural productivity is indispensable to meet future food demand. Crop improvement programs rely heavily on genetic diversity. The success of weeds in the ecosystem can be attributed to genetic diversity and plasticity. Weedy rice, a major weed of rice, has diverse morphology and phe...
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MDPI AG
2022-01-01
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| Series: | Diversity |
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| Online Access: | https://www.mdpi.com/1424-2818/14/1/44 |
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| author | Swati Shrestha Gourav Sharma Shandrea Stallworth Edilberto D. Redona Te Ming Tseng |
| author_facet | Swati Shrestha Gourav Sharma Shandrea Stallworth Edilberto D. Redona Te Ming Tseng |
| author_sort | Swati Shrestha |
| collection | DOAJ |
| description | Increasing agricultural productivity is indispensable to meet future food demand. Crop improvement programs rely heavily on genetic diversity. The success of weeds in the ecosystem can be attributed to genetic diversity and plasticity. Weedy rice, a major weed of rice, has diverse morphology and phenology, implying wide genetic diversity. Study was conducted to genotype weedy rice accessions (n = 54) previously phenotyped for herbicide tolerance and allelopathic potential using 30 SSR markers. Cultivated rice (CL163, REX) and allelopathic rice (RONDO, PI312777, PI338047) were also included in the study. Nei’s genetic diversity among weedy rice (0.45) was found to be higher than cultivated rice (0.24) but less than allelopathic rice (0.56). The genetic relationship and population structure based on herbicide tolerance and allelopathic potential were evaluated. Herbicide-tolerant and susceptible accessions formed distinct clusters in the dendrogram, indicating their genetic variation, whereas no distinction was observed between allelopathic and non-allelopathic weedy rice accessions. Weedy rice accession B2, which was previously reported to have high allelopathy and herbicide tolerance, was genetically distinct from other weedy rice. Results from the study will help leverage weedy rice for rice improvement programs as both rice and weedy rice are closely related, thus having a low breeding barrier. |
| first_indexed | 2024-03-10T01:37:55Z |
| format | Article |
| id | doaj.art-eae79c8b0ac646f2a95fcc58a1feec2f |
| institution | Directory Open Access Journal |
| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T01:37:55Z |
| publishDate | 2022-01-01 |
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| spelling | doaj.art-eae79c8b0ac646f2a95fcc58a1feec2f2023-11-23T13:31:09ZengMDPI AGDiversity1424-28182022-01-011414410.3390/d14010044Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic PotentialSwati Shrestha0Gourav Sharma1Shandrea Stallworth2Edilberto D. Redona3Te Ming Tseng4Department of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39762, USADepartment of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39762, USADepartment of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39762, USAAgronomy-Plant Breeding, Delta Research and Extension Center, Mississippi State University, Stoneville, MS 38776, USADepartment of Plant and Soil Sciences, Mississippi State University, Starkville, MS 39762, USAIncreasing agricultural productivity is indispensable to meet future food demand. Crop improvement programs rely heavily on genetic diversity. The success of weeds in the ecosystem can be attributed to genetic diversity and plasticity. Weedy rice, a major weed of rice, has diverse morphology and phenology, implying wide genetic diversity. Study was conducted to genotype weedy rice accessions (n = 54) previously phenotyped for herbicide tolerance and allelopathic potential using 30 SSR markers. Cultivated rice (CL163, REX) and allelopathic rice (RONDO, PI312777, PI338047) were also included in the study. Nei’s genetic diversity among weedy rice (0.45) was found to be higher than cultivated rice (0.24) but less than allelopathic rice (0.56). The genetic relationship and population structure based on herbicide tolerance and allelopathic potential were evaluated. Herbicide-tolerant and susceptible accessions formed distinct clusters in the dendrogram, indicating their genetic variation, whereas no distinction was observed between allelopathic and non-allelopathic weedy rice accessions. Weedy rice accession B2, which was previously reported to have high allelopathy and herbicide tolerance, was genetically distinct from other weedy rice. Results from the study will help leverage weedy rice for rice improvement programs as both rice and weedy rice are closely related, thus having a low breeding barrier.https://www.mdpi.com/1424-2818/14/1/44crop-improvementpopulation geneticsweed suppressionsustainable weed managementpalmer amaranthglyphosate |
| spellingShingle | Swati Shrestha Gourav Sharma Shandrea Stallworth Edilberto D. Redona Te Ming Tseng Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential Diversity crop-improvement population genetics weed suppression sustainable weed management palmer amaranth glyphosate |
| title | Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential |
| title_full | Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential |
| title_fullStr | Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential |
| title_full_unstemmed | Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential |
| title_short | Exploring the Genetic Diversity among Weedy Rice Accessions Differing in Herbicide Tolerance and Allelopathic Potential |
| title_sort | exploring the genetic diversity among weedy rice accessions differing in herbicide tolerance and allelopathic potential |
| topic | crop-improvement population genetics weed suppression sustainable weed management palmer amaranth glyphosate |
| url | https://www.mdpi.com/1424-2818/14/1/44 |
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