Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China

Wang, Yanjie; Wang, Yanli; Sun, Xiaodong; Caiji, Zhuoma; Yang, Jingbiao; Cui, Di; Cao, Guilan; Ma, Xiaoding; Han, Bing; Xue, Dayuan; Han, Longzhi

doi:10.1186/s13002-016-0120-0

Cited by 35 publications

(35 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…in China (Wang et al, 2017), barley in Ethiopia (Samberg, Fishman, & Allendorf, 2013), sorghum (Sorghum bicolor (L.) Moench) in Cameroon (Barnaud, Deu, Garine, McKey, & Joly, 2007) and in Kenya (Labeyrie et al, 2014(Labeyrie et al, , 2016, pearl millet in Kenya (Labeyrie et al, 2016), and cassava (Manihot esculenta Crantz) in Guyana (Elias, McKey, Panaud, Anstett, & Robert, 2001) among others (see Supporting Information for some relevant results from these studies).…”

Section: On-farm Management and The Practicalities Of In Situ Consementioning

confidence: 94%

“…There, farmers continue to grow landraces and maintain traditional knowledge and seed management practices (Brush, ; Jarvis et al., ), a process known as de facto conservation (Brush, ). There is an increasing body of literature that documents how these farmers maintain and influence important amounts of phenotypic and genetic diversity of crops with different reproductive systems and evolutionary histories, for example, for maize in Mexico (Orozco‐Ramirez, Ross‐Ibarra, Santacruz‐Varela, & Brush, ; Perales, Benz, & Brush, ; Pressoir & Berthaud, ,b), potatoes ( Solanum tuberosum L.) in Peru (De Haan et al., ; Quiros et al., ), rice ( Oryza sativa L.) in China (Wang et al., ), barley in Ethiopia (Samberg, Fishman, & Allendorf, ), sorghum ( Sorghum bicolor (L.) Moench) in Cameroon (Barnaud, Deu, Garine, McKey, & Joly, ) and in Kenya (Labeyrie et al., , ), pearl millet in Kenya (Labeyrie et al., ), and cassava ( Manihot esculenta Crantz) in Guyana (Elias, McKey, Panaud, Anstett, & Robert, ) among others (see for some relevant results from these studies).…”

Section: On‐farm Management and The Practicalities Of In Situ Conservmentioning

confidence: 99%

“…Farmer seed management is a strong determinant of spatial structure in crop genetic resources—a fact that highlights the importance of intermeshing social, landscape, and genetic data into the design of germplasm conservation strategies (Labeyrie et al., , ; Orozco‐Ramirez et al., ; Samberg et al., ). Recognition of this human involvement and its significant effect on the structure of local and regional crop populations increases the need to recognize in situ conservation on‐farm of crop species as a dynamic evolutionary process (Barnaud et al., ; Labeyrie et al., , ; Orozco‐Ramirez et al., ; Pressoir & Berthaud, ,b; Samberg et al., ; Vigouroux, Barnaud, et al., ; Wang et al., ) It is distinctly different to that occurring in wild relatives and noncrop species where the homogenizing effects of seed exchange/sharing and the accelerated selective forces of rogueing of susceptible individuals are not imposed.…”

Section: On‐farm Management and The Practicalities Of In Situ Conservmentioning

confidence: 99%

“…Large numbers of samples of threatened landraces and crop wild relatives collected in the past are stored in gene banks. Many of the collecting missions were sufficiently well documented as to allow precise identification of past collecting sites, thereby allowing sites to be revisited and populations, if still extant, recollected to compare with historical seeds (De Haan et al., ; Thormann & Dulloo, ; Thormann et al., ; Thormann, Reeves, et al., ; Vigouroux, Cedric, et al., ; Wang et al., ). As noted earlier, historic and contemporary genotypes of wild cereals (Nevo et al., ) and of field mustard (Franks et al., ) sampled from the same locations showed evidence of advancement of flowering time due to climate change.…”

Section: Complementarity Between Ex Situ and In Situ Conservationmentioning

confidence: 99%

“…Despite their undoubted value, ex situ collections have a fundamental limitation in that they are "frozen snapshots" reflecting the structure and genetic variation in individual populations at the time of collection (Brush, 2004;De Haan, Nuñez, Bonierbale, Ghislain, & van der Maesen, 2013;Wang et al, 2017). Once assembled, the alleles collected are fixed, and if not curated sufficiently well, will decline through genetic drift due to inappropriate regeneration procedures during storage (Gale & Lawrence, 1984;Harrington, 1972).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

In situ conservation—harnessing natural and human‐derived evolutionary forces to ensure future crop adaptation

Bellon

Dulloo

Sardos³

et al. 2017

Evolutionary Applications

View full text Add to dashboard Cite

Ensuring the availability of the broadest possible germplasm base for agriculture in the face of increasingly uncertain and variable patterns of biotic and abiotic change is fundamental for the world's future food supply. While ex situ conservation plays a major role in the conservation and availability of crop germplasm, it may be insufficient to ensure this. In situ conservation aims to maintain target species and the collective genotypes they represent under evolution. A major rationale for this view is based on the likelihood that continued exposure to changing selective forces will generate and favor new genetic variation and an increased likelihood that rare alleles that may be of value to future agriculture are maintained. However, the evidence that underpins this key rationale remains fragmented and has not been examined systematically, thereby decreasing the perceived value and support for in situ conservation for agriculture and food systems and limiting the conservation options available. This study reviews evidence regarding the likelihood and rate of evolutionary change in both biotic and abiotic traits for crops and their wild relatives, placing these processes in a realistic context in which smallholder farming operates and crop wild relatives continue to exist. It identifies areas of research that would contribute to a deeper understanding of these processes as the basis for making them more useful for future crop adaptation.

show abstract

Section: On-farm Management and The Practicalities Of In Situ Consementioning

confidence: 94%

Section: On‐farm Management and The Practicalities Of In Situ Conservmentioning

confidence: 99%

Section: On‐farm Management and The Practicalities Of In Situ Conservmentioning

confidence: 99%

Section: Complementarity Between Ex Situ and In Situ Conservationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

In situ conservation—harnessing natural and human‐derived evolutionary forces to ensure future crop adaptation

Bellon

Dulloo

Sardos³

et al. 2017

Evolutionary Applications

View full text Add to dashboard Cite

show abstract

Ethnolinguistic associations and genetic diversity of rice landraces in Nagaland, India

Roy,

Patra,

Kumar

et al. 2023

Plants People Planet

View full text Add to dashboard Cite

Societal Impact StatementPreserving and conserving crop landraces, tended by indigenous farming communities, is crucial for future food security. This research focused on rice landrace diversity in the north‐eastern Himalayan region of Nagaland, India, where Naga communities cultivate rice according to their dietary and cultural preferences. Rice diversity is closely linked to the region's ethnolinguistic and ecological variety. On‐farm conservation, in collaboration with indigenous communities, is imperative to protect these germplasm resources. Involving these communities actively in conservation efforts will safeguard their traditional knowledge, endorse sustainable farming practices, and enhance the resilience of local agricultural systems.Summary Understanding the genetic diversity and cultural significance of crop landraces is crucial for their conservation and sustainable utilization. This study focused on rice landraces from Nagaland in north‐eastern India to assess their genetic diversity and explore their associations with ethnolinguistic groups. We collected 78 rice landraces from Nagaland and a small part of Manipur and conducted microsatellite genotyping for genetic analysis. We integrated social anthropology and population genetics analyses of rice landraces to glean insights into the genetic diversity, population structure, and ethnolinguistic history of rice cultivation in Nagaland. The study revealed the rich cultural significance of rice landraces among the Nagas. Farmers practiced small‐scale subsistence farming, maintaining diverse rice landraces. Naming conventions were based on factors such as seed source, color, grain type, and ecological suitability. Rice landraces played important roles in ethnic cultures, festivals, and religious ceremonies. Genetic analysis identified significant diversity, with 277 alleles across 69 loci and a moderate gene diversity of 0.57. Two distinct sub‐populations were identified, with one dominated by Chakhesang and Angami Nagas and the other by Sümi and Lotha accessions. Differentiation was observed between lowland and upland cultivars, with one sub‐population comprising exclusively lowland varieties. Cultural factors and cultivation practices influenced population differentiation, with ethnicity and ecotype having a significant impact. The study also highlighted the correlation between ethnolinguistic differentiation and the indica–japonica structuring of rice landraces. Different ethnic groups in Nagaland had distinct cultivation practices, contributing to genetic differentiation. Overall, this research emphasizes the need to preserve rice landraces and associated traditional knowledge for future improvements and cultural heritage conservation. It provides insights into genetic diversity, cultural significance, and the relationship between genetic diversity, cultural practices, and agricultural traditions.

show abstract

Genetic Improvement of Rural Landraces Through Mutation Research

Siddique,

Rahman,

Gain

et al. 2024

Sustainable Landscape Planning and Natural Resources Management

View full text Add to dashboard Cite

Influence of ethnic traditional cultures on genetic diversity of rice landraces under on-farm conservation in southwest China

Cited by 35 publications

References 50 publications

In situ conservation—harnessing natural and human‐derived evolutionary forces to ensure future crop adaptation

In situ conservation—harnessing natural and human‐derived evolutionary forces to ensure future crop adaptation

Ethnolinguistic associations and genetic diversity of rice landraces in Nagaland, India

Genetic Improvement of Rural Landraces Through Mutation Research

Contact Info

Product

Resources

About