Genetic diversity and origin of Japonica- and Indica-like rice biotypes of weedy rice in the Guangdong and Liaoning provinces of China

Zhang, Lianju; Dai, Weimin; Wu, Chuan; Song, Xiaoling; Qiang, Sheng

doi:10.1007/s10722-011-9690-9

Cited by 45 publications

(65 citation statements)

References 15 publications

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“…These results are also consistent with the outcomes from our report. A lack of relationship between weedy and wild rice was characterized in areas where O. rufipogon is still present40, which also supports the conclusion from current report. It indicates that using mitochondrial genome or CMS (cytoplasmic male sterility) genes are a good method for replenishing the evidence from nuclear genome.…”

Section: Discussionsupporting

confidence: 91%

Genetic variation architecture of mitochondrial genome reveals the differentiation in Korean landrace and weedy rice

Tong

Park

2017

Sci Rep

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Mitochondrial genome variations have been detected despite the overall conservation of this gene content, which has been valuable for plant population genetics and evolutionary studies. Here, we describe mitochondrial variation architecture and our performance of a phylogenetic dissection of Korean landrace and weedy rice. A total of 4,717 variations across the mitochondrial genome were identified adjunct with 10 wild rice. Genetic diversity assessment revealed that wild rice has higher nucleotide diversity than landrace and/or weedy, and landrace rice has higher diversity than weedy rice. Genetic distance was suggestive of a high level of breeding between landrace and weedy rice, and the landrace showing a closer association with wild rice than weedy rice. Population structure and principal component analyses showed no obvious difference in the genetic backgrounds of landrace and weedy rice in mitochondrial genome level. Phylogenetic, population split, and haplotype network evaluations were suggestive of independent origins of the indica and japonica varieties. The origin of weedy rice is supposed to be more likely from cultivated rice rather than from wild rice in mitochondrial genome level.

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Section: Discussionsupporting

confidence: 91%

Genetic variation architecture of mitochondrial genome reveals the differentiation in Korean landrace and weedy rice

Tong

Park

2017

Sci Rep

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“…The maximum amount of variation was plotted as the first axis, with subsequent variation of lesser magnitude explained by each additional dimension [38]. The principal component analysis, which can be helpful for illustrating the genetic relationships of sugarcane parents as individual units, was calculated based on the SSR data matrix of the 5 loci for all 115 sugarcane accessions occupied in this study (Figure 3).…”

Section: Results and Analysismentioning

confidence: 99%

“…The low genetic differentiation (Gst) among populations was primarily caused by the high level of gene flow. However, compared to wild sugarcane (Gst = 0.209) [13] and weedy rice (Gst = 0.387) [38], the Gst (0.095) of 115 sugarcane parents was still at a low level.…”

Section: Discussionmentioning

confidence: 99%

Genetic Diversity Analysis of Sugarcane Parents in Chinese Breeding Programmes Using gSSR Markers

You

Xu²,

Zheng³

et al. 2013

The Scientific World Journal

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Sugarcane is the most important sugar and bioenergy crop in the world. The selection and combination of parents for crossing rely on an understanding of their genetic structures and molecular diversity. In the present study, 115 sugarcane genotypes used for parental crossing were genotyped based on five genomic simple sequence repeat marker (gSSR) loci and 88 polymorphic alleles of loci (100%) as detected by capillary electrophoresis. The values of genetic diversity parameters across the populations indicate that the genetic variation intrapopulation (90.5%) was much larger than that of interpopulation (9.5%). Cluster analysis revealed that there were three groups termed as groups I, II, and III within the 115 genotypes. The genotypes released by each breeding programme showed closer genetic relationships, except the YC series released by Hainan sugarcane breeding station. Using principle component analysis (PCA), the first and second principal components accounted for a cumulative 76% of the total variances, in which 43% were for common parents and 33% were for new parents, respectively. The knowledge obtained in this study should be useful to future breeding programs for increasing genetic diversity of sugarcane varieties and cultivars to meet the demand of sugarcane cultivation for sugar and bioenergy use.

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“…These characters facilitate the distribution of weedy rice seriously impairing the yield of rice grain (Gressel and Valverde, 2009;Prathepha, 2009;Shivrain et al, 2009;Chung and Park, 2010). Direct-seeded rice systems contribute to the spread of weedy rice, which poses a threat to the rice growers in Asian countries including China, Malaysia, Thailand, India, Korea, the Philippines, Vietnam, and Sri Lanka (Delouche et al, 2007;Varshney and Tiwari, 2008;Prathepha, 2011;Chauhan, 2012;Mansor et al, 2012;Zhang et al, 2012a). Weedy rice has especially caused significant damage in rice growing areas of China where it has reduced the crop yield by approximately 3.4 billion kg (Liang and Qiang, 2011).…”

Section: Introductionmentioning

confidence: 99%

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

Shu-lin¹,

Tian²,

Li³

et al. 2017

mpb

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Weedy rice produces a low number of grains per plant and is considered undesirable in cultivated rice fields. It spreads rapidly because of its high phenotypic plasticity and seed shattering. We used the RID14 marker to identify the genotypes governing red and white pericarp color in weedy rice. We then evaluated 18 characters of 199 weedy rice accessions (5 rice-growing regions in Asia) and 24 of cultivated rice as control, and analyzed them using coefficients of variation, principal component analysis, and cluster analysis. Our results showed that weedy rice accessions and cultivated rice populations from different regions of Asia were significantly different in one or more of their morphological characteristics. Weedy rice significantly differed from cultivated rice in plant height at vegetative growth phase, and in pericarp color and seed shattering during the reproductive growth phase. According to principal component analysis, weedy rice populations were significantly separated from cultivated rice in North China, Korea, Southeast Asia, Korea, and South China. We used principal component analysis and cluster analysis to categorize weedy rice populations into 3 main groups: Group 1 from Korea and Northern China; group 2 from Southern China and Southeast Asia; and group 3 from Eastern China. This study established an index for morphological characteristics of weedy rice to facilitate its identification the fields, which are expected to provide a theoretical basis for weedy rice infestation control in Asia.

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Genetic diversity and origin of Japonica- and Indica-like rice biotypes of weedy rice in the Guangdong and Liaoning provinces of China

Cited by 45 publications

References 15 publications

Genetic variation architecture of mitochondrial genome reveals the differentiation in Korean landrace and weedy rice

Genetic variation architecture of mitochondrial genome reveals the differentiation in Korean landrace and weedy rice

Genetic Diversity Analysis of Sugarcane Parents in Chinese Breeding Programmes Using gSSR Markers

Morphological Characterization of Weedy Rice Populations from Different Regions of Asia

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