Hybrids 1 × 4, 2 × 3, 1 × 6 and 2 × 5 were identified to be high yielding and stable across environments and can serve as candidates for further on-farm … · heterotic groups. Cataloging available diversity and directing the crossing among heterotic groups assists hybrid breeding, while the knowledge on germplasm and extensive testing provide means for predicting best hybrid … · heterotic group were selected on the basis of the results obtained in previous experiments (Fan et al. Abstract Proprietary inbreds developed by the private seed industry … · Definition of heterosis and the concept of heterotic grouping The phenomenon of heterosis was first detected in maize.) inbred lines into heterotic groups has been proposed recently. Generally, inter-group hybrids generated from genotypes of different heterotic groups are more vigorous than intra-group hybrids, which result from crosses within a heterotic group. In this study, 269 temperate inbred lines, most of which are widely used in Chinese maize breeding programs, . · The hybrids from heterotic groups, Reid × SPT, Reid × LRC, SPT × PA, and Lancaster × LRC, contributed highly significant positive SCA effects and strong heterosis … the same heterotic group and low correlation for line combinations from different heterotic groups of parental GDs with single crosses and their heterosis for grain yield. Sep 20, 2023 · In string theory, a heterotic string is a closed string (or loop) which is a hybrid . Identification of heterotic groups and efficient testers, which are important prerequisites for the development of outstanding hybrids, has been a major challenge to its success, especially for early and extra‐early germplasm. However, hybrids produced from crosses between parents from different rice subspecies (i. The . capitata) is an important cruciferous vegetable widely cultivated all over … Sep 13, 2021 · A heterotic group (HG) refers to a collection of germplasm that when crossed with germplasm from another group, gives rise to desirable heterosis (on average) compared to the crossing of pairs of .
· Heterotic grouping based on the GCA effects of multiple traits (HGCAMT) was used to classify the 13 QPM inbreds into heterotic groups. Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. · Nature Plants - This study reports the genomic changes underlying the convergent and divergent agronomic improvement of the female and male heterotic … · Schematic representation of the proposed organization of heterotic groups in hybrid breeding and the utilization of novel diversity. Time course imaging of two maize inbreds and their F1 hybrid (middle) exhibiting heterosis. . Shull defined heterosis in 1914 as, “The increased vigour, speed of development, resistance to disease and insect pests, or to climatic rigours of any kind, manifested by crossbred organisms · and heterotic group’s specific and general combining ability estimates.
Molecular markers are a powerful tool to delimit heterotic groups and to assign inbred lines into existing heterotic groups (Abebe et al. NUGRAHA2, B. The seven breeding populations clustered as would be predicted on the basis of pedigree and heterotic … · The stiff-stalk heterotic group in Maize (Zea mays L. Heterotic groups and heterotic patterns form an integral part of hybrid breeding and help breeders to utilize their germplasm in a more efficient manner avoids unnecessary crosses to be . (2009) used simple sequence repeat (SSR) markers as well as GY and pedigree information to classify 27 inbred lines into three heterotic groups, A, B, and C. Key words Sep 1, 2016 · Combining ability estimates of lines to be used in breeding are useful for maize (Zea mays L.
블랙핑크 로제의 티파니앤코 신상 팔찌 티파니 락 가격과 정보 Lung Fibroblasts. · of among- versus within-group crosses (0. This study investigated hybrid yield, yield heterosis and combining ability within and among groups based on genetic distance derived from single-nucleotide polymorphism markers. Extensive research has been focused on the TSPT × Reid heterotic pattern because it is one of the predominant heterotic patterns in northern China and has been … Sep 20, 2021 · Heterotic group theory is one of the fundamental concepts which allow the maximum exploitation of the available genetic diversity in maize. This line is classified as a CIMMYT heterotic group B line and combines well with CML197, CML312, and CML488. · As heterotic group assignment is made based on combining ability from diallel experiments, several authors suggested the use of molecular markers in heterotic grouping [2–7].
, 2004). var. · 1 Chapter Heterosis and Heterotic Grouping among Tropical Maize Germplasm Richard Olutayo Akinwale Abstract Maize (Zea mays L. Phenotypic descriptors and molecular markers have been widely used in crop diversity studies to measure genetic distances (Darvishzadeh, 2012). Sep 17, 2020 · As the development of any heterotic group requires a minimum of 8–16 plants, genotyping of at least 60 individuals is recommended to form new breeding populations. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents. Determination of Heterotic Groups and Heterosis Analysis of Yield Performance Introduction Cabbage ( Brassica oleracea L.However, unlocking the full potential of hybrid breeding … Identification of heterotic groups and efficient testers, which are important prerequisites for the development of outstanding hybrids, has been a major challenge to its success, especially for early and extra-early germplasm. Acquaah [38] implicated maternal cytoplasmic effect for yield in plants. This study was carried out to (a) identify the most efficient heterotic grouping method for classifying a set of inbred lines and (b) … · The search for heterotic groups is a key point to improve the process of semi-hybrid construction. Surprisingly, most of the yield increases in maize over the last decades cannot be attributed to heterosis, which essentially remained unaltered.47 Mg ha-1, P < 0.
Introduction Cabbage ( Brassica oleracea L.However, unlocking the full potential of hybrid breeding … Identification of heterotic groups and efficient testers, which are important prerequisites for the development of outstanding hybrids, has been a major challenge to its success, especially for early and extra-early germplasm. Acquaah [38] implicated maternal cytoplasmic effect for yield in plants. This study was carried out to (a) identify the most efficient heterotic grouping method for classifying a set of inbred lines and (b) … · The search for heterotic groups is a key point to improve the process of semi-hybrid construction. Surprisingly, most of the yield increases in maize over the last decades cannot be attributed to heterosis, which essentially remained unaltered.47 Mg ha-1, P < 0.
Concept of Heterotic Group and its Exploitation in Hybrid
· Key message High-density haplotype analysis revealed significant haplotype sharing between ex-PVPs registered from 1976 to 1992 and key maize founders, and uncovered similarities and differences in haplotype sharing patterns by company and heterotic group. S1–S4) constructed from HGCAMT under drought, low-N, Striga infestation, and across test environments as well as Roger's distance estimates of SNP-based markers using Ward's minimum variance cluster analysis are presented in . However, little such information is available for Chinese cabbage. ARIFIN1*, A. Among these, SCA and hybrid mean, hybrid index, combined use of amplified fragment length polymorphism (AFLP), SSR markers and heterotic group’s specific and general combining ability (HSGCA) are the major grouping methods. long-term selection.
This suggests that RFLP-based GDs are efficient and reliable to assess and allocate genotypes from tropical maize populations into heterotic groups.D 1st year (GPBR) Submitted to: Dr. ARDIARINI1 and M. M.) inbred lines into heterotic groups has been proposed objectives of this study were to (i) assign maize inbred lines to known heterotic groups using this method and (ii) compare efficiency of this method to … Sep 1, 2016 · The objectives of this study were to (i) evaluate combining ability of 25 improved exotic germplasm using different numbers of testers (1 to 3) from Suwan1, Reid, and non-Reid heterotic groups ., produce more super hybrids with certain number of crosses).네이버 블로그> 그냥 논리적 사고 방식을 위한 훈련
Analysis of variance of line-tester mating.A. · Hybrid breeding, which entails crossing of lines from two genetically distant germplasm collections—called heterotic groups (Melchinger and Gumber 1998)—has emerged as a prime strategy to meet demands for a sustainable intensification of agricultural production (Duvick 2005). characters distinct from this group are expected for the geno-types CEP29 and ICA2 (group II), BR18 and TB951 (group III), · Heterotic group classification has a crucial impact on maize (Zea mays L.. 2008) and heterotic group’s specific and general combining ability (HSGCA) of grain yield proposed by Fan et al.
· A novel method of using a heterotic group's specific and general combining ability (HSGCA) to assign maize (Zea mays L. The 19 inbred lines were selected on the basis of … · Fan et al.V. The BCY is an important trait in baby corn cultivation; hence the same was selected for heterotic grouping. · Heterotic Groups Contributed to Trait-Specific Advantages in Heterosis.R.
Development and deployment of maize hybrids have been reported as … · 475 SABRAO Journal of Breeding and Genetics 50 (4) 475-493, 2018 GROUPING IN HETEROTIC POOL OF MAIZE INBRED LINES BASED ON NUMERICAL AND GRAPHICAL ANALYSIS OF COMBINING ABILITY N. pment of Heterotic Pools in Germplasm /Genetic stocks and Inbreds, their Improvement for Increasing Heterosis Submitted by: a RAD/2018-18 Ph. Meanwhile, MARB has the advantage of not requiring sophisticated transformation and double haploid (DH) technologies over RNA interference (RNAi) … · Genomic selection (GS) is one of the most powerful tools available for maize breeding. One gauge group is SO(32) (the HO string) while the other is E 8 × E 8 (the HE string).) objectives of this study were to (i) evaluate combining ability of 25 improved exotic germplasm using different numbers of testers (1 to 3) from Suwan1, Reid, and non-Reid heterotic groups; (ii) study differences in combining ability … · Heterotic groups and patterns are extremely important in hybrid breeding., 2008). stiff stalk and non–stiff stalk) and tropical germplasm (CIMMYT maize lines, heterotic group A and B), where the … · Heterotic groups are necessary for high vigor in hybrid rice. CML141, CML142, CML147, CML151, CML153, CML155, CML157, and ing ability with the testers mentioned above. The EARLYGEM 21 populations with exotic background were assigned to a unique heterotic group. However, the SNP data in the present study (Table 1 ; Figure 7 ) did not reveal clear population structure and genetic differentiation for most inbred lines in … Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. · However, targeting heterotic group B male inbred lines being 5–8 days earlier flowering than heterotic group A inbred lines used to make single-cross females and vice versa during TWC hybrid identification will be a good strategy to minimize synchronization problems and maximize seed yield from production fields. · The identification of single nucleotide polymorphisms (SNPs) can improve understanding of the genetic diversity of maize (Zea mays) inbred lines and their classification into heterotic groups . 발로야짤 The hybrids. The main objectives of the study were to (1) evaluate the magnitude of yield heterosis … Different heterotic grouping methods has been used by different researchers. · Heterotic grouping of the inbred lines under Striga-infested, drought, low N, optimal growing environments and across research environments were performed based on SCA of grain yield (Agbaje et al. In this review, we cover the history of GS and highlight particular milestones during its adaptation to maize breeding. Results., 2000, 2002, 2008, 2014, 2016). Analysis of maize heterotic groups and patterns during past
The hybrids. The main objectives of the study were to (1) evaluate the magnitude of yield heterosis … Different heterotic grouping methods has been used by different researchers. · Heterotic grouping of the inbred lines under Striga-infested, drought, low N, optimal growing environments and across research environments were performed based on SCA of grain yield (Agbaje et al. In this review, we cover the history of GS and highlight particular milestones during its adaptation to maize breeding. Results., 2000, 2002, 2008, 2014, 2016).
국민 소득 순위 · Each of the grouping methods classified the inbred lines into 3 heterotic groups but SCA and heterotic groups’ specific and general combining ability had the joint highest breeding efficiency. See more.) is the most important staple cereal cultivated in sub-Saharan Africa but its productivity is considerable low due to several factors. Combining ability and heterosis relationship is more complex, the establishment of heterotic group might be more help to research heterosis. · The heterotic grouping agreed with genetic background information and heterotic group’s specific and general combining ability estimates. · In general, maize germplasm was determined to consist of 4-6 heterotic groups.
Six plants from each of the 25 inbreds ( ♀) were pollinated with each tester ( ♂). Proprietary inbreds developed by the private seed indus … · Heterotic groups are made up of genotypes that do well when mixed with genotypes from another heterotic group [19]. Using a line × tester mating design, 150 testcrosses were generated in Yunnan. Using a line × tester mating design, 150 testcrosses were generated in Yunnan. Among-subspecies diversity (i. Heterotic group constitution is the fundamental step for exploitation of heterosis and developing superior hybrids (Aguiar et al.
Lung fibroblasts are a heterogeneous group of cells, producing extracellular matrices to build lung structural framework, while also directing cell growth … · heterotic group hybrid purity identification 1. 121 carried out a genome-wide . · Selection, verification and kinship of 12 FILs. … Sep 13, 2021 · A heterotic group has been defined as a collection of germplasm that, when crossed with germplasm from an external group, tends to exhibit a higher degree of … Sep 1, 2018 · Identifying groups with high SCA values is the main reason for heterotic group clustering.03) was similar to the one reported by Wen et al. · This finding was inconsistent with the conclusion of the present study, which found that the sum of parental GCA values has a highly significant positive correlation with heterosis for some traits. Heterotic pools | PPT - SlideShare
In this study, two divergent heterotic groups, Shaan A and Shaan B, were cultivated through long-term artificial selection based on breeding … · In total fruit yield, the high positive BP and MP heterotic values recorded in the two crosses involving ‘Calypso’ as the mother plant (Pistillate parent), showed that ‘Calypso’ among others, had transferred traits for high yield to such hybrids. sativa and falcata) and selfing within subspecies are reviewed as tools to manage genetic diversity and to test the value of gene and linkat interactions in crosses. Plant breeders have been classifying germplasm into separate heterotic groupings and identifying acceptable parents for crosses using genetic and … · Heterotic pools. The concept of heterotic groups has more recently been adapted to other plant species. · into Heterotic Group A or B according to their combin-CML342, CML343) (Fig. WALUYO1, N.임산부 페티쉬
The development of … · were part of the same heterotic group (Table 3). Sep 17, 2019 · Group-1B had 69 inbred lines, which are primarily QPM (65 lines) with mixed heterotic groups and diverse genetic backgrounds, while Group-1C consisted of 32 inbred lines that were primarily non . Sep 17, 2020 · Developing Heterotic Groups for Successful Hybrid Breeding in Perennial Ryegrass by Maximilian Vogt 1,2, Steven Yates 1, Timothy Sykes 1, Wilbert Luesink 3, Michael Koch 2 and Bruno Studer … Single-cross maize hybrids display superior heterosis and are produced from crossing two parental inbred lines belonging to genetically different heterotic groups.S. The . Based on this, intra-heterotic-groups should be genetically improved and finally, hybrids between inter-heterotic-groups should be produced to identify superior hybrids (Melchinger and Gumber, 1998).
, Medicago sativa subsp. AZRAI3 1Department of Agronomy, Faculty of … Sep 9, 2019 · Li and Wang , based on former studies, proposed five heterotic groups, namely Tangsipingtou (TSPT), Lancaster, Lancaster-like, the improved Reid (PA), and Tem-tropic I (PB). · Identification of heterotic groups among inbreds is crucial to the success of a maize (Zea mays L. Our team proposed a "three heterotic group" pattern consisting of Suwan1xReid, Suwan1×nonReid, and ReidxnonReid, based on long-term breeding practice [31][32] [33]. design for grain yield (ton ha -1) at the tested . Heterogenetic definition, of, relating to, or characterized by heterogenesis.
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