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1. Unzipping haplotypes in diploid and polyploid genomes

Author:
Zhang, Xingtan; Wu, Ruoxi; Wang, Yibin; Yu, Jiaxin; Tang, Haibao
Source:
Computational and Structural Biotechnology Journal 2020 v.18 pp. 66-72
ISSN:
2001-0370
Subject:
heterosis,   etc   ; chromosomes; diploidy; evolution; genome; genome assembly; haplotypes; heterozygosity; polyploidy;     Show all 9 Subjects
Abstract:
... Diploid genomes consist of two homologous copies of chromosomes with one from each parent while polyploid genomes contain more than two homologous sets of chromosomes. Most of the reference genome assemblies collapsed haplotypes that represent ‘mosaic’ sequences, ignoring allelic variants that may be involved in important cellular and biological functions. Unzipping haplotypes into distinct sets o ...
DOI:
10.1016/j.csbj.2019.11.011
PubMed:
31908732
PubMed Central:
PMC6938933

2. The heterosis estimates for growth and survival traits in sterlet and Siberian sturgeon purebreds and hybrids

Author:
Shivaramu, Sahana; Vuong, Doi Thi; Havelka, Miloš; Lebeda, Ievgen; Kašpar, Vojtěch; Flajšhans, Martin
Source:
Journal of applied ichthyology 2020 v.36 no.3 pp. 267-274
ISSN:
0175-8659
Subject:
heterosis,   etc   ; Acipenser baerii; Acipenser ruthenus; aquaculture systems; body weight; developmental stages; hatching; hybrids; purebreds; sturgeon;     Show all 10 Subjects
Abstract:
... The aim of the present study was to estimate and compare the growth and survival traits of the hybrids and purebreds produced by crossing the Siberian sturgeon (Acipenser baerii) (S) and sterlet (Acipenser ruthenus) (St) in order to determine the heterosis effect in the F1 generation. We compared the breeding conditions, mean body weight (BW) and cumulative survival in the artificially produced hy ...
DOI:
10.1111/jai.14034

3. Crossbreeding of three different shell color lines in the Pacific oyster reveals high heterosis for survival but low heterosis for growth

Author:
Han, Ziqiang; Li, Qi; Liu, Shikai; Kong, Lingfeng
Source:
Aquaculture 2020 v.529 pp. 735621
ISSN:
0044-8486
Subject:
heterosis,   etc   ; Crassostrea gigas; color; crossing; diallel analysis; females; hatcheries; hybrids; juveniles; larvae; males; purebreds; specific combining ability; survival rate; variance;     Show all 15 Subjects
Abstract:
... Heterosis is important for improving productive traits in aquaculture, but the heterosis between selected lines remains unclear in bivalve molluscs. Here, a diallel crosses among black shell (B, 7th generation), white shell (W, 7th generation) and orange shell (O, 6th generation) lines of the Pacific oyster were performed to examine the potential for exploiting heterosis of productive traits by cr ...
DOI:
10.1016/j.aquaculture.2020.735621

4. Method for Early Generation Soybean Population Selection Using F2 High-Parent Heterosis Testing

Author:
Hegstad, J. M.; Nelson, R. L.; Chaky, J. M.
Source:
Crop science 2019 v.59 no.3 pp. 1021-1029
ISSN:
0011-183X
Subject:
heterosis,   etc   ; Glycine max; genetic variation; germplasm; screening; soybeans;     Show all 6 Subjects
Abstract:
... The germplasm pool for North American soybean [Glycine max (L.) Merr.] is narrow, and identifying novel and useful genetic diversity is time consuming and expensive. The objective of this research was to develop an early-generation population screening method to select diversity × elite populations. The F₂ high-parent heterosis (F₂ heterosis) was used as a tool to identify populations with the gre ...
DOI:
10.2135/cropsci2018.10.0619

5. Comparative transcriptome analysis indicates that a core transcriptional network mediates isonuclear alloplasmic male sterility in wheat (Triticum aestivum L.)

Author:
Liu, Zihan; Li, Sha; Li, Wei; Liu, Qi; Zhang, Lingli; Song, Xiyue
Source:
BMC plant biology 2020 v.20 no.1 pp. 10
ISSN:
1471-2229
Subject:
heterosis,   etc   ; Triticum aestivum; biosynthesis; chalcone; cytoplasmic male sterility; gene expression regulation; growth retardation; isomerases; males; oxidative phosphorylation; pectinesterase; pollen; prediction; sporopollenin; sugars; transcription (genetics); transcriptomics; wheat;     Show all 18 Subjects
Abstract:
... BACKGROUND: Cytoplasmic male sterility (CMS) plays a crucial role in the utilization of heterosis and various types of CMS often have different abortion mechanisms. Therefore, it is important to understand the molecular mechanisms related to anther abortion in wheat, which remain unclear at present. RESULTS: In this study, five isonuclear alloplasmic male sterile lines (IAMSLs) and their maintaine ...
DOI:
10.1186/s12870-019-2196-x
PubMed:
31910796
PubMed Central:
PMC6947873

6. Comparative analysis of mitochondrial genome and expression variation between UG93A and UG93B reveals a candidate gene related to cytoplasmic male sterility in kenaf

Author:
Liao, Xiaofang; Wei, Meiling; Khan, Aziz; Zhao, Yanhong; Kong, Xiangjun; Zhou, Bujin; Li, Min; Peng, Shuangshuang; Munsif, Fazal; Ullah, Abid; Zhou, Ruiyang
Source:
Industrial crops and products 2020 v.152 pp. 112502
ISSN:
0926-6690
Subject:
heterosis,   etc   ; Arabidopsis; Hibiscus cannabinus; abortion (plants); cytoplasmic male sterility; genes; hybrids; kenaf; mitochondria; mitochondrial DNA; mitochondrial genome; peptides; pollen; single nucleotide polymorphism; tobacco;     Show all 15 Subjects
Abstract:
... Plant cytoplasmic male sterility (CMS) is a maternal genetic trait that results from incompatibilities between the organellar and nuclear genomes which causes pollen abortion. Cytoplasmic male sterility plays an important role in hybrid seed production and heterosis utilization. In kenaf, cytoplasmic male sterility has been exploited in hybrid seed production for several years, but its molecular m ...
DOI:
10.1016/j.indcrop.2020.112502

7. Full diallel crosses in superior parents of Jatropha curcas L

Author:
Mat, N.H.C.; Bhuiyan, M.A.R.; Yaakob, Z.; Wickneswari, R.
Source:
Industrial crops and products 2020 v.151 pp. 112482
ISSN:
0926-6690
Subject:
heterosis,   etc   ; Jatropha curcas; branches; crossing; diallel analysis; high-yielding varieties; homozygosity; hybrids; inbred lines; parents; plant height; principal component analysis; progeny; seed weight; sowing; Malaysia;     Show all 16 Subjects
Abstract:
... Contrary to most studies which reported on J. curcas improvement through half-diallel crosses of inbred lines, this study attempted to exploit the hybrid vigour of progenies through full diallel crosses of homozygous parental plants. In this study five superior plants of Jatropha curcas L., chosen after two years of evaluation, were crossed in full diallel fashion from August to December 2015 to d ...
DOI:
10.1016/j.indcrop.2020.112482

8. Phenotypic traits and gonadal development of hybrids between Misgurnus anguillicaudatus and Paramisgurnus dabryanus

Author:
Zhong, Jia; Ma, Laiyan; Wang, Weimin
Source:
Aquaculture 2020 v.523 pp. 735129
ISSN:
0044-8486
Subject:
heterosis,   etc   ; Misgurnus anguillicaudatus; Paramisgurnus dabryanus; adults; animal ovaries; gene expression; genes; germ cells; hatching; histology; hybrids; interspecific hybridization; phenotype; purebreds; reproductive performance; sexual development; sexual dimorphism; testes; China;     Show all 19 Subjects
Abstract:
... Misgurnus anguillicaudatus and Paramisgurnus dabryanus are two loach species widely sympatrically distributed in China. Hybrids of the two species have been detected in the wild and produced by artificial hybridization experiments, but their sexual development has not been studied. In this study, the phenotypic traits of purebred and hybrid groups were evaluated in the aspects of survival, growth, ...
DOI:
10.1016/j.aquaculture.2020.735129

9. Heterosis analysis at early generations for complete diallel crosses in three different geographical culture populations of Sinonovacula constricta (Lamarck 1818) in Zhejiang, China

Author:
Xue, Baobao; Shen, Benlong; Li, Hao; Meng, Delong; Niu, Donghong; Li, Jiale; Shen, Heding
Source:
Aquaculture research 2020 v.51 no.4 pp. 1388-1397
ISSN:
1355-557X
Subject:
heterosis,   etc   ; Veneroida; diallel analysis; females; genetic improvement; growth traits; heat tolerance; hybridization; hybrids; larvae; males; mollusc culture; new variety; survival rate; temperature; China;     Show all 16 Subjects
Abstract:
... The paper reports a study focused on breeding new rapidly growing and heat‐tolerant strains in a commercially important Asian bivalve, Sinonovacula constricta. To breed a new strain of S. constricta with fast growth and high temperature tolerance, complete diallel crosses were carried out using three different geographical culture populations from Zhejiang (Z), Fujian (F) and Guangdong (G) provinc ...
DOI:
10.1111/are.14484

10. Variation for heterodimerization and nuclear localization among known and novel oil palm SHELL alleles

Author:
Singh, Rajinder; Low, Eng‐Ti Leslie; Ooi, Leslie Cheng‐Li; Ong‐Abdullah, Meilina; Ting, Ngoot‐Chin; Nookiah, Rajanaidu; Ithnin, Maizura; Marjuni, Marhalil; Mustaffa, Suzana; Yaakub, Zulkifli; Amiruddin, Mohd Din; Manaf, Mohamad Arif Abdul; Chan, Kuang‐Lim; Halim, Mohd Amin Ab; Sanusi, Nik Shazana Nik Mohd; Lakey, Nathan; Sachdeva, Mohit; Bacher, Blaire; Garner, Peggy A.; MacDonald, Jill D.; Smith, Steven W.; Wischmeyer, Corey; Budiman, Muhammad A.; Beil, Melissa; Stroff, Clayton; Reed, Jerry; Van Brunt, Andrew; Berg, Howard; Ordway, Jared M.; Sambanthamurthi, Ravigadevi
Source:
Thenew phytologist 2020 v.226 no.2 pp. 426-440
ISSN:
0028-646X
Subject:
heterosis,   etc   ; Elaeis guineensis; alleles; dimerization; endocarp; field experimentation; fluorescence; gene expression; germplasm; introgression; palm oils; phenotype; phenotypic variation; plant breeding; progeny; seeds; two hybrid system techniques;     Show all 17 Subjects
Abstract:
... Oil palm breeding involves crossing dura and pisifera palms to produce tenera progeny with greatly improved oil yield. Oil yield is controlled by variant alleles of a type II MADS‐box gene, SHELL, that impact the presence and thickness of the endocarp, or shell, surrounding the fruit kernel. We identified six novel SHELL alleles in noncommercial African germplasm populations from the Malaysian Pal ...
DOI:
10.1111/nph.16387

11. Combining ability and heterosis for grain iron biofortification in bread wheat

Author:
Younas, Abia; Sadaqat, Hafeez Ahmad; Kashif, Muhammad; Ahmed, Nisar; Farooq, Muhammad
Source:
Journal of the science of food and agriculture 2020 v.100 no.4 pp. 1570-1576
ISSN:
0022-5142
Subject:
heterosis,   etc   ; Triticum aestivum; biofortification; food fortification; genes; genetic traits; genotype; germplasm; grain yield; iron; new variety; nutrient deficiencies; nutrients; phytic acid; selective breeding; specific combining ability; wheat;     Show all 17 Subjects
Abstract:
... BACKGROUND: Iron is one of the nutrients that is essential for the human body. Despite the abundance of iron on earth, about two billion people worldwide are affected by iron deficiency. Iron biofortification of wheat, instead of supplementation and food fortification, provides a pragmatic approach to solve the problem of iron deficiency. In this study, 144 diverse wheat genotypes were evaluated f ...
DOI:
10.1002/jsfa.10165

12. Exploring the molecular basis of heterosis for plant breeding

Author:
Liu, Jie; Li, Mengjie; Zhang, Qi; Wei, Xin; Huang, Xuehui
Source:
Journal of integrative plant biology 2020 v.62 no.3 pp. 287-298
ISSN:
1672-9072
Subject:
heterosis,   etc   ; Arabidopsis; Solanum lycopersicum var. lycopersicum; Sorghum bicolor; corn; crops; crossing; disease resistance; genes; genomics; hybrids; loci; plant breeding; rice; tomatoes;     Show all 15 Subjects
Abstract:
... Since approximate a century ago, many hybrid crops have been continually developed by crossing two inbred varieties. Owing to heterosis (hybrid vigor) in plants, these hybrids often have superior agricultural performances in yield or disease resistance succeeding their inbred parental lines. Several classical hypotheses have been proposed to explain the genetic causes of heterosis. During recent y ...
DOI:
10.1111/jipb.12804

13. Genetic Analysis of Morphological Traits in Wheat Hybrids Based on the Additive-Dominance Model

Author:
Rahmatallah Karimizadeh,; Sharifi, Peyman; Mohtasham Mohammadi,
Source:
Russian agricultural sciences 2020 v.46 no.2 pp. 113-120
ISSN:
1068-3674
Subject:
heterosis,   etc   ; Triticum; additive effect; canopy; crossing; filling period; genetic analysis; grain yield; heading; hybrids; leaves; models; peduncle; plant height; temperature; variance; vigor; wheat;     Show all 18 Subjects
Abstract:
... Present study carried out in a randomized complete block design with three replications for determining additive, dominance and cytoplasmic effects on inheritance of yield and some of agro-morphological traits in bread wheat. The highest value of grain yield (265.5 g m–¹) was obtained in p6. Dominance variance was larger than additive variance for grain-filling period (GFP), plant height (PH), spi ...
DOI:
10.3103/S1068367420020160

14. Fertile allohexaploid Brassica hybrids obtained from crosses between B. oleracea and B. juncea via ovule rescue and colchicine treatment of cuttings

Author:
Mwathi, Margaret W.; Gupta, Mehak; Quezada-Martinez, Daniela; Pradhan, Aneeta; Batley, Jacqueline; Mason, Annaliese S.
Source:
Plant cell, tissue, and organ culture 2020 v.140 no.2 pp. 301-313
ISSN:
0167-6857
Subject:
heterosis,   etc   ; Brassica juncea; Brassica oleracea; chromosome number; chromosomes; colchicine; cole crops; genetic factors; genome; genotype; germplasm; meiosis; metaphase; ovules; pollen viability; progeny; seeds; triploidy;     Show all 18 Subjects
Abstract:
... An allohexaploid Brassica crop (2n = AABBCC) does not exist naturally, but is of interest for its potential to combine useful traits found in the six cultivated Brassica species which share combinations of the A, B and C genomes with additional allelic heterosis. In this study, we aimed to produce 2n = AABBCC hybrids by crosses between B. juncea and a number of Brassica C genome species. We used o ...
DOI:
10.1007/s11240-019-01728-x

15. Economic consequences of dairy crossbreeding in conventional and organic herds in Sweden

Author:
Clasen, J.B.; Fikse, W.F.; Kargo, M.; Rydhmer, L.; Strandberg, E.; Østergaard, S.
Source:
Journal of dairy science 2020 v.103 no.1 pp. 514-528
ISSN:
0022-0302
Subject:
heterosis,   etc   ; Holstein; beef; calves; crossbreds; crossing; economic impact; genetic improvement; heifers; herds; insemination; milk production; organic production; profitability; purebreds; semen; simulation models; slaughter; Sweden;     Show all 19 Subjects
Abstract:
... This study simulated the consequences of crossbreeding between Swedish Holstein and Swedish Red on herd dynamics and herd profitability under Swedish conditions. Two base herds were simulated using a stochastic herd simulation model, SimHerd Crossbred. The herds reflected average Swedish conventional and organic herds having purebred Swedish Holstein. For each base herd, 3 breeding strategies were ...
DOI:
10.3168/jds.2019-16958

16. Interactive roles of chromatin regulation and circadian clock function in plants

Author:
Chen, Z. Jeffrey; Mas, Paloma
Source:
Genome biology 2019 v.20 no.1 pp. 62
ISSN:
1474-760X
Subject:
heterosis,   etc   ; chromatin; circadian clocks; circadian rhythm; domestication; epigenetics; loci; transcription (genetics);     Show all 8 Subjects
Abstract:
... Circadian rhythms in transcription ultimately result in oscillations of key biological processes. Understanding how transcriptional rhythms are generated in plants provides an opportunity for fine-tuning growth, development, and responses to the environment. Here, we present a succinct description of the plant circadian clock, briefly reviewing a number of recent studies but mostly emphasizing the ...
DOI:
10.1186/s13059-019-1672-9
PubMed:
30902105
PubMed Central:
PMC6429827

17. Selection of a new scallop strain, QN‐2, from the backcross of Peruvian scallop × bay scallop F1 hybrids with bay scallops

Author:
Xu, Dongxue; Wang, Chunde; Liu, Bo; Chen, Min; Ke, Ke; Zhao, Yuming; Ma, Bin; Liu, Guilong; Zhao, Xia; Zhang, Jinsheng
Source:
Aquaculture research 2019 v.50 no.12 pp. 3692-3699
ISSN:
1355-557X
Subject:
heterosis,   etc   ; Argopecten irradians; aquaculture industry; backcrossing; body weight; hybrids; scallops; China;     Show all 8 Subjects
Abstract:
... Cross‐breeding has been successfully applied in agriculture and aquaculture industries to improve important production traits. In our previous studies, we produced the F₁ hybrids with high heterosis in growth by crossing the bay scallops with the Peruvian scallops and selected a new strain, Bohai Red, from the F₁ hybrids. In this study, we selected another new strain from the backcross (BC₁) of th ...
DOI:
10.1111/are.14329

18. Current understanding of male sterility systems in vegetable Brassicas and their exploitation in hybrid breeding

Author:
Singh, Saurabh; Dey, S. S.; Bhatia, Reeta; Kumar, Raj; Behera, T. K.
Source:
Plant reproduction 2019 v.32 no.3 pp. 231-256
ISSN:
2194-7953
Subject:
heterosis,   etc   ; Brassica; breeding; cytoplasm; cytoplasmic male sterility; forage crops; hybrids; mitochondrial genes; oilseeds; seeds; vegetables;     Show all 11 Subjects
Abstract:
... KEY MESSAGE: Overview of the current status of GMS and CMS systems available in Brassica vegetables, their molecular mechanism, wild sources of sterile cytoplasm and exploitation of male sterility in hybrid breeding. The predominantly herbaceous family Brassicaceae (crucifers or mustard family) encompasses over 3700 species, and many of them are scientifically and economically important. The genus ...
DOI:
10.1007/s00497-019-00371-y

19. Exploiting heterozygosity in industrial yeasts to create new and improved baker's yeasts

Author:
Korhola, Matti; Naumova, Elena S.; Partti, Edvard; Aittamaa, Marja; Turakainen, Hilkka; Naumov, Gennadi I.
Source:
Yeast 2019 v.36 no.9 pp. 571-587
ISSN:
0749-503X
Subject:
heterosis,   etc   ; bakers yeast; crossing; diploidy; dough; ethanol; fermentation; glucose; heterozygosity; meiosis; mutants; sporulation; tetraploidy;     Show all 13 Subjects
Abstract:
... The main aim of the work was to utilize heterozygosity of industrial yeast strains to construct new baker's yeast strains. Commercial baker's yeast strain ALKO 743, its more ethanol tolerant descendant ALKO 554 selected initially for growth over 300 generations in increasing ethanol concentrations in a glucose medium, and ALKO 3460 from an old domestic sour dough starter were used as starting stra ...
DOI:
10.1002/yea.3428

20. Progressive heterosis in genetically defined tetraploid maize

Author:
Washburn, Jacob D.; McElfresh, Mitchell J.; Birchler, James A.
Source:
Journal of genetics and genomics 2019 v.46 no.8 pp. 389-396
ISSN:
1673-8527
Subject:
heterosis,   etc   ; alfalfa; alleles; biomass production; corn; diploidy; inbred lines; models; parents; phenotype; potatoes; tetraploidy;     Show all 12 Subjects
Abstract:
... Progressive heterosis, i.e., the additional hybrid vigor in double-cross tetraploid hybrids not found in their single-cross tetraploid parents, has been documented in a number of species including alfalfa, potato, and maize. In this study, four artificially induced maize tetraploids, directly derived from standard inbred lines, were crossed in pairs to create two single-cross hybrids. These hybrid ...
DOI:
10.1016/j.jgg.2019.02.010