Plant Genetic Resources: Characterization and Utilization最新文献_第8页

Phylogeny, origin and diversification of the Dasylirion genus based on matK and rbcL sequences 基于matK和rbcL序列的水蛭属的系统发育、起源和分化

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-10-11 DOI: 10.1017/s1479262122000181

Yadhira C. Ortiz-Covarrubias, M. M. Orozco-Sifuentes, Dulce V. Mendoza-Rodríguez, José A. Villlarreal-Quintanilla, Octavio Martínez, Fernando Hernández-Godínez, María de Jesús Jáuregui-González, M. Reyes-Valdés

{"title":"Phylogeny, origin and diversification of the Dasylirion genus based on matK and rbcL sequences","authors":"Yadhira C. Ortiz-Covarrubias, M. M. Orozco-Sifuentes, Dulce V. Mendoza-Rodríguez, José A. Villlarreal-Quintanilla, Octavio Martínez, Fernando Hernández-Godínez, María de Jesús Jáuregui-González, M. Reyes-Valdés","doi":"10.1017/s1479262122000181","DOIUrl":"https://doi.org/10.1017/s1479262122000181","url":null,"abstract":"\u0000 The Dasylirion genus is highly represented in the arid and semi-arid regions of Mexico and USA, playing important ecological and economical roles. Inferring the evolutionary patterns of this group will eventually facilitate understanding biological phenomena and outlining conservation and usage strategies. We performed a molecular phylogenetic analysis based on two chloroplast DNA regions: maturase-K gene (matK) and the large subunit of ribulose-1,5-bisphosphate carboxylase gene (rbcL). We constructed a phylogenetic tree by maximum likelihood with GTR as the sequence substitution model and a relaxed clock, inferred diversification patterns by lineage through time and explored the diversification rates of Dasylirion by the Yule model. The study included 11 species of the genus, which represent 50% of all its known species. We used two calibration points to date the tree, one based on fossil records of Acorus gramineus, and the other on the estimated stem age of the Yucca genus. The combined sequences of the two partial genes comprised 1455 bp and 18 polymorphic sites. We estimated an average substitution rate of 0.0005 nucleotide per million years for the concatenated DNA sequences. The molecular dating analysis estimated that the Dasylirion genus appeared more than 5.46 million years ago, with a rate of diversification of 0.0466 net speciation events per million years. The estimated age represents a lower bound, since not all Dasylirion species are included. These findings are consistent with other origin and diversification hypotheses for arid-land Asparagaceae in the Mexican highlands as a result of geomorphological events in North America.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78443817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic diversity and marker trait association for yield attributing traits in accessions of common bean (Phaseolus vulgaris L.) in India 印度菜豆(Phaseolus vulgaris L.)产量性状遗传多样性及标记性状关联

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-10-04 DOI: 10.1017/s147926212200017x

Chainika Gupta, R. Salgotra, R. Alvarez Venegas, Reetika Mahajan, Umang Koul

{"title":"Genetic diversity and marker trait association for yield attributing traits in accessions of common bean (Phaseolus vulgaris L.) in India","authors":"Chainika Gupta, R. Salgotra, R. Alvarez Venegas, Reetika Mahajan, Umang Koul","doi":"10.1017/s147926212200017x","DOIUrl":"https://doi.org/10.1017/s147926212200017x","url":null,"abstract":"\u0000 Common bean (Phaseolus vulgaris L.) is a highly economically important crop worldwide and a particularly important source of protein and minerals for people in less developed countries. Improving yield is a vital objective to meet the increasing demand for food due to the expanding human population. The present study was undertaken to study the genetic architecture of agronomic traits of common bean in India, particularly in the north-western Himalayan region. Marker-trait association (MTA) analysis was performed in a population of 100 common bean accessions using polymorphic microsatellite markers. Population structure analysis based on SSR markers divided the accessions into three main subpopulations. Ten significant MTAs were found using general linear model (GLM) and mixed linear model (MLM) approaches. We found two markers i.e. BM142 and J04555 associated with 100 seed weight and pods per plant common in both the GLM and MLM approach markers. All the MTAs were considered as major MTAs contributing more than 25% phenotypic variation. The significant quantitative trait loci identified in this study could be used in marker-assisted breeding to accelerate the genetic improvement of yield and development of high yielding common beans lines.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80015953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Characterizing sorghum (Sorghum bicolor [L.] Moench) varieties diversity to identify those with contrasting traits of interest for intercropping systems in the Sudano-Sahelian zone of West Africa 高粱(sorghum bicolor [L.][Moench])品种多样性，以确定西非苏丹-萨赫勒地区间作系统中具有对比特征的品种

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-10-04 DOI: 10.1017/s1479262122000168

Aminata Ganeme, C. Kondombo, L. Raboin, J. Dusserre, Roger Kaboré, M. Adam, S. Traoré

{"title":"Characterizing sorghum (Sorghum bicolor [L.] Moench) varieties diversity to identify those with contrasting traits of interest for intercropping systems in the Sudano-Sahelian zone of West Africa","authors":"Aminata Ganeme, C. Kondombo, L. Raboin, J. Dusserre, Roger Kaboré, M. Adam, S. Traoré","doi":"10.1017/s1479262122000168","DOIUrl":"https://doi.org/10.1017/s1479262122000168","url":null,"abstract":"\u0000 Sorghum is an important staple crop in Sub-Saharan Africa. In the Sudano-Sahelian zone of West Africa, sorghum is mainly intercropped with cowpea, but these intercropping systems are facing low-productivity problems. The overall aim of this research was to identify sorghum varieties with different agro-morphological and physiological traits that could improve the performance of the intercropping systems. We followed a two-step methodology comprising (i) identification of varieties and plant traits of interest in intercropping systems, using participatory methods, and (ii) agro-morpho-physiological characterization of 50 sorghum varieties, to examine the range of variation in traits of interest. The results show that landraces are the varieties most widely used by farmers, and that 82.5% of farmers consider the variety type they choose for intercropping to be important. Farmers mentioned plant height, number of leaves and stem diameter as important traits to consider. Analysis of variance showed significant differences between varieties for half of the 24 agro-morpho-physiological traits studied. Hierarchical clustering identified three main groups of varieties, distinguished by morphological traits such as stem diameter, total number and size of leaves (group 1), root traits (depth, growth angle, dry matter) and relative chlorophyll content (groups 2 and 3). Based on this classification, we recommend several varieties from each of the three groups, exhibiting contrasting traits, for an assessment of their performances in intercropping systems.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84739700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of phenotypic diversity and multi-locational screening against bean common mosaic virus (BCMV) disease resistance in dry bean (Phaseolus vulgaris L.) germplasm 干豆(Phaseolus vulgaris L.)种质表型多样性评价及多位点抗大豆花叶病毒(BCMV)抗性筛选

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-07-08 DOI: 10.1017/s1479262122000144

Talavar Basavaraja, L. Manjunatha, R. Chandora, Mohar Singh, S. Rathod, Vikas Dubey, Kanishka R. C., F. Singh, N. P. Singh

{"title":"Assessment of phenotypic diversity and multi-locational screening against bean common mosaic virus (BCMV) disease resistance in dry bean (Phaseolus vulgaris L.) germplasm","authors":"Talavar Basavaraja, L. Manjunatha, R. Chandora, Mohar Singh, S. Rathod, Vikas Dubey, Kanishka R. C., F. Singh, N. P. Singh","doi":"10.1017/s1479262122000144","DOIUrl":"https://doi.org/10.1017/s1479262122000144","url":null,"abstract":"\u0000 Assessing genetic diversity and identifying trait-specific germplasm within germplasm collections is necessary for a varietal development programme. Agronomic features were investigated in 318 diverse dry bean germplasm accessions, including check varieties. We observed a lot of genetic variability for the traits studied. A wide range of variations was noticed for days to 50% flowering, days to maturity, pod length, the number of seeds per pod and 100-seed weight (HSW). For eight of the agronomic features evaluated, the analysis of variance revealed substantial differences among the accessions. For all characters, phenotypic coefficient of variation estimations were more significant than genotypic coefficient of variation. Plant height, days to 50% flowering, seed yield (q/ha) and HSW had high heritability and genetic advance as a per cent of the mean. Association analysis revealed a significant positive relationship between HSW, plant height, pod length and seed yield (q/ha). According to a hierarchical clustering analysis based on agronomic features, the diversity of dry bean germplasm has no significant association with their geographical origin. The number of pods per plant, plant height, days to maturity, days to 50% flowering and seed yield had relatively long vectors based on principal components 1 and 2, indicating that genotypes differ significantly. Additionally, the trait-specific donors and bean common mosaic virus disease-resistant accessions, IC360831, ET4515, EC150250, IC340947, IC564797B, EC565693 and ET8409 could be of value for dry bean improvement.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87663112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of risk of GM contamination in flaxseed accessions imported from Canada: a case study to restrict the unauthorized GM events from entering India 评估从加拿大进口的亚麻籽中转基因污染的风险:一个限制未经授权的转基因事件进入印度的案例研究

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-31 DOI: 10.1017/s1479262122000132

Monika Singh, Kushaldeep Kaur, Shilpi Sharma, Aparna Paliwal, Mamta Singh, Raghavendra Aminedi, V. Kaur, G. Randhawa

{"title":"Assessment of risk of GM contamination in flaxseed accessions imported from Canada: a case study to restrict the unauthorized GM events from entering India","authors":"Monika Singh, Kushaldeep Kaur, Shilpi Sharma, Aparna Paliwal, Mamta Singh, Raghavendra Aminedi, V. Kaur, G. Randhawa","doi":"10.1017/s1479262122000132","DOIUrl":"https://doi.org/10.1017/s1479262122000132","url":null,"abstract":"\u0000 In India, the restriction of genetically modified (GM) crops and derived products not approved in the country necessitates surveillance for transgene(s) in plant material/products imported into the country. CDC Triffid expressing acetolactate synthase (ALS) conferring tolerance to sulphonylurea herbicide is the only GM flax event that has got approval in Canada in 1990s and subsequently deregistered in 2001. In spite of deregistration, the unexpected and unauthorized detection of traces of GM flax in the consignments imported from Canada to Europe has further necessitated the stringent monitoring of flax shipments from Canada for suspected GM incidents. This study reports on the detection of transgenic elements being present in GM flax employing polymerase chain reaction assays, in a set of 123 flaxseed accessions imported from Canada for research purpose. Based on the tests conducted, none of the transgenic elements, namely, nos promoter (P-nos), nos terminator (T-nos), nptII marker gene, ALS transgene, as present in the GM flax CDC Triffid were detected in any of the tested accessions. The well-known herbicide tolerance gene cp4-epsps, being employed in Roundup® Ready events of other crops, was also not detected in these samples. This case study has demonstrated the importance of monitoring the presence of transgene(s) in flaxseed imports, and such studies need to be carried out for the imported seeds from the country where GM events of respective crop are being approved whereas they have not been approved in the country of import as a part of precautionary approach.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73098378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Introgression of the coupled Fhb1-Sr2 to increase Fusarium head blight and stem rust resistance of elite wheat cultivars Fhb1-Sr2偶联基因渗入提高小麦优良品种抗枯萎病和茎锈病能力

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-24 DOI: 10.1017/s1479262122000107

M. Raffo, G. Azzimonti, S. Pereyra, C. Pritsch, B. Lado, S. Dreisigacker, M. Quincke, A. Castro, P. Silva, R. Garcia, F. Pereira, S. Germán

{"title":"Introgression of the coupled Fhb1-Sr2 to increase Fusarium head blight and stem rust resistance of elite wheat cultivars","authors":"M. Raffo, G. Azzimonti, S. Pereyra, C. Pritsch, B. Lado, S. Dreisigacker, M. Quincke, A. Castro, P. Silva, R. Garcia, F. Pereira, S. Germán","doi":"10.1017/s1479262122000107","DOIUrl":"https://doi.org/10.1017/s1479262122000107","url":null,"abstract":"\u0000 Fusarium head blight (FHB) and stem rust (SR) threaten the sustainability of wheat production worldwide. Fhb1 and Sr2 confer partial durable resistance to FHB and SR, respectively. Despite resistant alleles of both genes are linked in repulsion, lines with Fhb1-Sr2 in coupling were developed at the University of Minnesota, USA. Marker-assisted backcrossing was used to incorporate the coupled Fhb1-Sr2 into four elite INIA-Uruguay spring wheat varieties lacking both genes and expressing different levels of FHB and SR resistance. In each case, the initial cross between the donor line and recurrent parent was backcrossed three times. Genotypes carrying Fhb1-Sr2 were selected using the molecular marker UMN10. In BC3F3 families, retention of Fhb1-Sr2 was further confirmed with the markers SNP3BS-8 and Sr2-ger9 for Fhb1 and Sr2, respectively. BC3F3 homozygous lines contrasting at UMN10, SNP3BS-8 and Sr2-ger9 were obtained to quantify the effect of Fhb1-Sr2 on the resistance to FHB under controlled conditions and to SR under field conditions. After 26 months period, successful introgression of Fhb1-Sr2 into the four cultivars was achieved, representing novel wheat genetic resources. Lines homozygous for the resistant alleles of Fhb1 were significantly more resistant to FHB as reflected by an 18% reduction of average FHB area under the disease progress curve. A significant effect of Sr2 on SR field resistance was observed in lines derived from the most susceptible cultivar ‘Génesis 2375’. The most resistant lines to both diseases are expected to be valuable genetic resources in breeding for durable resistance to FHB and SR.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77948974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Genetic diversity and phylogeny analysis of 3-hydroxy 3-methylglutaryl-CoA reductase gene (SmHMGR) in Danshen (Salvia miltiorrhiza Bunge) 丹参3-羟基3-甲基戊二酰辅酶a还原酶基因(SmHMGR)的遗传多样性及系统发育分析

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-18 DOI: 10.1017/s1479262122000120

Ruihua Ren, Fang Liao, D. Kong, Yanyan Yin, Wei Liu, Shaona Teng, Jie Feng, Guanrong Li

{"title":"Genetic diversity and phylogeny analysis of 3-hydroxy 3-methylglutaryl-CoA reductase gene (SmHMGR) in Danshen (Salvia miltiorrhiza Bunge)","authors":"Ruihua Ren, Fang Liao, D. Kong, Yanyan Yin, Wei Liu, Shaona Teng, Jie Feng, Guanrong Li","doi":"10.1017/s1479262122000120","DOIUrl":"https://doi.org/10.1017/s1479262122000120","url":null,"abstract":"\u0000 HMGR, 3-hydroxy-3-methylglutaryl-CoA reductase, is a major rate-limiting enzyme in mevalonate (MVA) pathway for isoprenoids and subsequent tanshinone biosynthesis in the Chinese traditional bulk herbal medicine Danshen, Salvia miltiorrhiza, mainly for cardiovascular disorders. In this paper, the genomic SmHMGR genes of 38 cultivated populations of S. miltiorrhiza collected in China were for the first time sequenced to reveal the genetic diversity and phylogeny. The SmHMGR gene was shown to be intron-free, 1650~1659 bp in complete CDS with the majority being 1656 bp, and two unique populations (W-FJLY-V-1 and W-SCHY-W-1) being 1659 and 1650 bp respectively. A total of 103 SNP variation sites were detected with a variation rate of 6.22%, most of which occurred in S. miltiorrhiza f. alba population W-SCHY-W-1; a total of 25 amino acid variation sites were found, of which 19 was in W-SCHY-W-1. The same four populations, W-SCHY-W-1, V-HBAG-V-1, V-JLCC-V-1 and S-NM-V-1 could be discriminated from the remaining 34 by both the SNP fingerprints and the deduced amino acid variation sites. Other or composite DNA markers are needed for better identification. The SmHMGR gene of white flower S. miltiorrhiza f. alba population W-SCHY-W-1 is especially rich in variations and worthy of further studies. Phylogenetic trees based on both the gene and the deduced amino acid sequences showed a very similar two-clade topological structure. This research enriched the content and the genetic means for the molecular identification, genetic diversity and phylogenetic studies of the cultivated S. miltiorrhiza populations, and laid a solid foundation for further related and in-depth investigations.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77365215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phenotypic characterization of Amaro coffee (Coffea arabica L.) local accessions using multi-variate techniques at Awada, Southern Ethiopia 埃塞俄比亚南部阿瓦达地区阿马罗咖啡(Coffea arabica L.)的多变量表型分析

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-17 DOI: 10.1017/s1479262122000119

Desalegn Alemayehu, W. Garedew, Abush Tesfaye Abebe

{"title":"Phenotypic characterization of Amaro coffee (Coffea arabica L.) local accessions using multi-variate techniques at Awada, Southern Ethiopia","authors":"Desalegn Alemayehu, W. Garedew, Abush Tesfaye Abebe","doi":"10.1017/s1479262122000119","DOIUrl":"https://doi.org/10.1017/s1479262122000119","url":null,"abstract":"\u0000 As a country of origin of coffee, Ethiopia is endowed with an immense diversity of the crop in its diverse coffee-growing agro-ecologies. Amaro Kelo is one of the major coffee production agro-ecologies in Ethiopia, where the genetic diversity of its landrace coffee germplasm was not properly characterized previously. The study aimed to characterize 64 Amaro Kelo local coffee accessions to understand the potential of the accessions for utilization in future coffee genetic improvement efforts. The experiment was laid out in an 8 × 8 simple lattice design with two replications at Awada Agricultural Research Sub-Center. Data were collected on 19 quantitative and 10 qualitative traits, and subjected to multivariate analyses, i.e. cluster and principal component analyses. The cluster analysis identified five clusters based on the quantitative characters, and the distances between most of the clusters were highly significant at P < 0.01. Principal component analysis revealed the first six principal components with Eigenvalues greater than one accounted for 77.7% of the total variation. The first two principal components with respective contributions of 23.32 and 18.85% cumulatively accounted for 42.2% of the total variation in the accessions. In addition, high values of Shannon-diversity index were found for the qualitative traits: branching habit, growth habit, fruit shape, overall appearance and stem habit. In general, the multivariate analyses confirmed the presence of high variation among the studied Amaro-Kelo coffee accessions that might serve as an important genetic resource for future coffee genetic improvement or conservation efforts.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87494913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting the frequency of transgressive RILs and minimum population size required for their recovery in horse gram (Macrotyloma uniflorum (Lam.) Verdc) 预测马兰(Macrotyloma uniflorum, Lam.)侵染率及其恢复所需的最小种群规模。Verdc)

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-12 DOI: 10.1017/s1479262122000077

B. R. Chandana, S. Ramesh, R. Kirankumar, G. Basanagouda

{"title":"Predicting the frequency of transgressive RILs and minimum population size required for their recovery in horse gram (Macrotyloma uniflorum (Lam.) Verdc)","authors":"B. R. Chandana, S. Ramesh, R. Kirankumar, G. Basanagouda","doi":"10.1017/s1479262122000077","DOIUrl":"https://doi.org/10.1017/s1479262122000077","url":null,"abstract":"\u0000 Early elimination of poor crosses based on an objective criterion allows increased allocation of resources only to a few promising crosses for identifying superior recombinant inbred lines (RILs) for use as pure-line cultivars in self-pollinated crops. Early generation (F2:3) prediction of frequency of superior RILs that could be derived from advanced generations of crosses is one such criterion. We predicted the frequency of transgressive RILs from two horse gram crosses (namely HPKM 320 × CRIDA18-R and IC 361290 × Palem 1) for primary branches per plant, pods per plant, pod weight per plant and grain weight per plant based on mid parental value, additive genetic effects and additive genetic variance estimated from trait means of parents, and their F2 and F2:3 generations. The predicted frequency of RILs that transgressed better parent/two checks varied with the cross and the trait within a cross. The frequencies of transgressive RILs predicted from IC 361290 × Palem 1 were higher than those predicted from HPKM 320 × CRIDA 18-R for three of the four traits. As expected, the minimum population size required to recover the transgressive RILs predicted from IC 361290 × Palem 1 was relatively smaller than that from IC 361290 × Palem 1. Increased allocation of resources for handling segregating populations derived from IC 361290 × Palem 1 is expected to result in superior RILs for use as cultivars. We believe that the objective criterion used in our study is handy in identifying superior RILs in early segregating populations derived from a few promising crosses.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74255956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Delineation of Bangladeshi coastal rice germplasm based on qualitative phenotypic traits 基于定性表型性状的孟加拉沿海稻种质资源圈定

IF 1.1 4区生物学

Plant Genetic Resources: Characterization and Utilization Pub Date : 2022-05-12 DOI: 10.1017/s1479262122000090

S. Banik, M. Rasul, N. Ivy, M. M. Haque, M. Hasan

{"title":"Delineation of Bangladeshi coastal rice germplasm based on qualitative phenotypic traits","authors":"S. Banik, M. Rasul, N. Ivy, M. M. Haque, M. Hasan","doi":"10.1017/s1479262122000090","DOIUrl":"https://doi.org/10.1017/s1479262122000090","url":null,"abstract":"\u0000 A detailed study of rice genetic resources in Bangladesh's coastal areas is necessary. This understanding is a necessary requirement for its utilization in selective breeding. The study reports on the qualitative morphological trait-based assessment of 150 local rice samples collected from Bangladesh's coastal zone, including 50 advanced lines developed from coastal germplasm. Six of the thirteen analysed characters had a substantial gene contribution, whereas the average was 0.694. The most impressive diversity was in leaf blade intensity of green colour (LBIGC: 0.705). The total morpho-qualitative diversity was calculated to be 0.412. The character efficiency content ranged from 0.655 (LBIGC) to 0.136 (Leaf Sheath: Anthocyanin colouration, Leaf Blade: Presence/Absence, and Leaf Blade: Anthocyanin. Colouration). As per the morphological variance study, 93% of morphological changes were detected within individuals, whereas 7% were found in populations. The 150 germplasm samples were divided into four subpopulations using STRUCTURE-based population analysis. A moderate genotypic difference was detected amongst all groups, with an Fst value of 0.111. The G statistic backed up the record as well. The Shannon mutual information index reached a value of 1.252 between populations 2 and 3. In terms of gene exchange, the highest value was found between populations 3 and 4. Our data indicate a high degree of diversity in Bangladesh's coastline rice germplasm. The findings will aid in conferring the farmers' Intellectual Property Rights on the investigated rice germplasm.","PeriodicalId":20252,"journal":{"name":"Plant Genetic Resources: Characterization and Utilization","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81567036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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