Genetic Diversity, Genetic Erosion, and Conservation of the Two Cultivated Rice Species (Oryza sativa and Oryza glaberrima) and Their Close Wild Relatives

Ahmadi, Nourollah

doi:10.1007/978-3-319-25954-3_2

Cited by 4 publications

(2 citation statements)

References 60 publications

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“…Rice (Oryza sativa L.) is cultivated in over 100 countries and provides food for millions of people [1,2]. Thus, rice is considered one of the most important crops in the world [3].…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity Evaluation and Conservation of Kam Fragrant Glutinous Rice (Oryza sativa L.) Germplasm in Southeast Guizhou, China

Lei

Zhou

Xiong

et al. 2021

Plants

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The genetic diversity of rice germplasm is the basis for increases in rice yield and quality. The collection, assessment, and protection of the genetic diversity of rice germplasm is important for achieving sustainable agriculture and assuring food security. Many underdeveloped indigenous areas have abundant and valuable rice germplasm resources. However, in-depth assessments of the genetic diversity of rice germplasm from these areas and studies related to protecting these traditional cultures are not available. In this study, from 2005 to 2016, the authors have conducted in-depth evaluation of the genetic diversity of Kam fragrant glutinous rice germplasm resources in southeast Guizhou by using multidisciplinary comprehensive methods such as ethnobotany, cultural anthropology, and modern molecular markers. In total, 376 Kam fragrant glutinous rice samples from 42 villages in the Dong community in southeast Guizhou were collected. Agronomic traits of panicles were complex and exhibited diversity. Some varieties had good disease resistance and adaptation to cold and wet climates. The Dong people named the Kam fragrant glutinous rice varieties by using seven elements, including diverse traits, growth environment, and origin. Traditional folk classification, in addition to morphology and biological analysis using molecular markers, indicates that Kam fragrant glutinous rice includes 91 varieties. Kam fragrant glutinous rice comprises a very high number of varieties, most of which are japonica-type and exhibit a high level of genetic diversity. The traditional folk classification of Kam fragrant glutinous rice by the Dong community is consistent with the biological classification. The traditional naming of Kam fragrant glutinous rice provides an important reference for understanding its genetic diversity. The high level of genetic diversity in Kam fragrant glutinous rice is not only related to the natural environment of the area but also tightly linked with the abundant and diverse Dong ethnic traditional cultures, which has led to protection of Kam fragrant glutinous rice’s genetic diversity.

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“…Rice (Oryza sativa L.) is cultivated in over 100 countries and provides food for millions of people [1,2]. Thus, rice is considered one of the most important crops in the world [3].…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity Evaluation and Conservation of Kam Fragrant Glutinous Rice (Oryza sativa L.) Germplasm in Southeast Guizhou, China

Lei

Zhou

Xiong

et al. 2021

Plants

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show abstract

“…Besides this cultivar, the Banjarese also knows three others, namely Lemo, Siam, and Pandak (Mursyidin et al 2017). However, most rice landraces are not wellcharacterized and, at the same time, being replaced (disappeared) due to adopting the 'green revolution' cultivars with high-yielding productivity (Nourollah 2016).…”

Section: Introductionmentioning

confidence: 99%

The ligule ultrastructure of the tidal swamp rice (Oryza sativa) landraces of South Kalimantan, Indonesia, and their genetic diversity and relationship

2021

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Abstract. Mursyidin DH, Purnomo, Daryono BS. 2021. The ligule ultrastructure of the tidal swamp rice (Oryza sativa) landraces of South Kalimantan, Indonesia, and their genetic diversity and relationship. Biodiversitas 22: 5280-5285. In-depth characterization of rice landrace is needed in supporting the future conservation and crop breeding programs. Tidal swamp rice (Oryza sativa L.), belonging to this landrace, provided useful agronomic traits for both programs. In this study, the nine the tidal swamp rice ligule samples, mainly from South Kalimantan, Indonesia, were observed ultrastructurally using the SEM method. The diversity and relationships of this landrace based on the ligule ultrastructure were also determined using PCA and UPGMA methods. Generally the tidal swamp rice showed a unique ultrastructure of their ligule, composed of the large trichomes (prickle hair), small trichomes (micro hair), stomata-like structure, and silica cells, as well as the papillae that line along the veins. In this case, we found four patterns of the prickle hair on the ligule's abaxial surface, which has never been reported previously, namely scattered randomly, lined up on the vein, grid-step-like pattern, and unpatterned. The results of PCA and UPGMA showed that this landrace grouped into the same main three clusters, where Sardani (an outgroup) was included in the second cluster and joined with other cultivars from South Kalimantan. This information may be useful for the development of taxonomy and plant structures, and plant genetics and conservation.

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Conservation of native tree species in the agroforest of rice-based agroecosystems will contribute to sustainable agriculture

Lopus,

Kushwaha,

Reshma

et al. 2023

Biodivers Conserv

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Traditional agriculture relies on ecosystem services for sustainable food production and is also identi ed as a climatesmart approach. The present study analyses the agroforests associated with the rice farming system of three different agricultural practices for biodiversity richness by comparing two parameters: plants and birds. Out of the 9 study sites, 3 sites were traditional farms maintained by Kurichiya tribal communities, 3 were natural farms, and the other 3 farms were modern. A total of 45 families, 104 genera, 128 species of plants, and 101 bird species belonged to 48 families, and 17 orders were identi ed from the study sites. The sample-size-based rarefaction and extrapolation (R/E) method was adopted to identify estimated biodiversity indices. Renyi pro le was used to understand the native tree diversity pro le of the selected sites. The result of this study indicates that bird diversity is positively correlated with native tree diversity and NDVI of May and October. Conserving more native trees in the farmland could be one of the reasons for the sustainable agriculture system of the Kurichiya tribal community as it attracts more bird species and contributes to the biological control of pests. Thus, the conservation of native tree species in the agroforest of rice-based agroecosystems will contribute to the sustainable agriculture system.

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Genetic Diversity, Genetic Erosion, and Conservation of the Two Cultivated Rice Species (Oryza sativa and Oryza glaberrima) and Their Close Wild Relatives

Cited by 4 publications

References 60 publications

Genetic Diversity Evaluation and Conservation of Kam Fragrant Glutinous Rice (Oryza sativa L.) Germplasm in Southeast Guizhou, China

Genetic Diversity Evaluation and Conservation of Kam Fragrant Glutinous Rice (Oryza sativa L.) Germplasm in Southeast Guizhou, China

The ligule ultrastructure of the tidal swamp rice (Oryza sativa) landraces of South Kalimantan, Indonesia, and their genetic diversity and relationship

Conservation of native tree species in the agroforest of rice-based agroecosystems will contribute to sustainable agriculture

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