scholarly journals Interpopulation Genetic Variance after Reciprocal Recurrent Selection in BSSS and BSCB1 Maize Populations

Crop Science ◽  
1993 ◽  
Vol 33 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Bruce J. Schnicker ◽  
Kendall R. Lamkey
Keyword(s):  
Genetic Variance ◽  
Recurrent Selection ◽  
Reciprocal Recurrent Selection ◽  
Maize Populations

scholarly journals Combining Ability and Heterosis of Algerian Saharan Maize Populations (Zea mays L.) for Tolerance to No-Nitrogen Fertilization and Drought

Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 492
Author(s):  
Meriem Riache ◽  
Pedro Revilla ◽  
Oula Maafi ◽  
Rosa Ana Malvar ◽  
Abderahmane Djemel
Keyword(s):  
Zea Mays ◽  
Stress Tolerance ◽  
Nitrogen Fertilization ◽  
Recurrent Selection ◽  
Zea Mays L ◽  
Base Material ◽  
N Fertilization ◽  
Nitrogen Stress ◽  
Reciprocal Recurrent Selection ◽  
Maize Populations

Drought and low nitrogen are major stresses for maize (Zea mays L.), and maize populations from the Sahara Desert are potential sources of stress tolerance. The objectives were to assess the tolerance and varietal and heterosis effects of Algerian populations under no-nitrogen fertilization and water stress. A diallel among six Algerian maize population was evaluated under drought (300 mm irrigation) vs. control (600 mm) and no-nitrogen fertilization vs. 120 kh ha−1 N fertilization. Genotypes showed significant differences and genetic effects for water- and nitrogen-stress tolerance. We propose a reciprocal recurrent selection to take advantage of additive and non-additive effects, using AOR and IGS, since they showed good performance in optimum and stress conditions, for improving yield heterosis for AOR × IGS. Negative effects are not expected on plant height, anthesis–silking interval or early vigor. These populations and BAH could be sources of inbred lines tolerant to drought and no-nitrogen fertilization. There was no relationship between origin and genetic group and stress tolerance per se or as parents of tolerant crosses. These populations and crosses could be used as base material among Algerian populations, for breeding programs focusing on tolerance to water or nitrogen stress.

scholarly journals Reciprocal recurrent selection effects on the genetic structure of tropical maize populations assessed at microsatellite loci

2003 ◽  
Vol 26 (3) ◽  
pp. 355-364 ◽  
Author(s):  
Luciana Rossini Pinto ◽  
Maria Lucia Carneiro Vieira ◽  
Claudio Lopes de Souza Jr. ◽  
Anete Pereira de Souza
Keyword(s):  
Genetic Structure ◽  
Microsatellite Loci ◽  
Recurrent Selection ◽  
Selection Effects ◽  
Reciprocal Recurrent Selection ◽  
Tropical Maize ◽  
Maize Populations

scholarly journals Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Matheus Costa dos Reis ◽  
José Maria Villela Pádua ◽  
Guilherme Barbosa Abreu ◽  
Fernando Lisboa Guedes ◽  
Rodrigo Vieira Balbi ◽  
...  
Keyword(s):  
Plant Height ◽  
Genetic Variance ◽  
Recurrent Selection ◽  
Reciprocal Recurrent Selection ◽  
Additive Variance ◽  
Lattice Design ◽  
Single Cross ◽  
Covariance Components ◽  
Variance And Covariance Components ◽  
Single Cross Hybrids

This study was carried out to obtain the estimates of genetic variance and covariance components related to intra- and interpopulation in the original populations (C0) and in the third cycle (C3) of reciprocal recurrent selection (RRS) which allows breeders to define the best breeding strategy. For that purpose, the half-sib progenies of intrapopulation (P11and P22) and interpopulation (P12and P21) from populations 1 and 2 derived from single-cross hybrids in the 0 and 3 cycles of the reciprocal recurrent selection program were used. The intra- and interpopulation progenies were evaluated in a10×10triple lattice design in two separate locations. The data for unhusked ear weight (ear weight without husk) and plant height were collected. All genetic variance and covariance components were estimated from the expected mean squares. The breakdown of additive variance into intrapopulation and interpopulation additive deviations (στ2) and the covariance between these and their intrapopulation additive effects (CovAτ) found predominance of the dominance effect for unhusked ear weight. Plant height for these components shows that the intrapopulation additive effect explains most of the variation. Estimates for intrapopulation and interpopulation additive genetic variances confirm that populations derived from single-cross hybrids have potential for recurrent selection programs.

scholarly journals Evaluation of three cycles of full-sib reciprocal recurrent selection in two maize populations from the Northeast of Spain

Euphytica ◽  
2012 ◽  
Vol 191 (2) ◽  
pp. 301-310 ◽  
Author(s):  
Javier Peña-Asín ◽  
Ángel Álvarez ◽  
Amando Ordás ◽  
Bernardo Ordás
Keyword(s):  
Recurrent Selection ◽  
Reciprocal Recurrent Selection ◽  
Maize Populations

scholarly journals Full-sib reciprocal recurrent selection in the maize populations Cimmyt and Piranão

2012 ◽  
Vol 11 (3) ◽  
pp. 3398-3408 ◽  
Author(s):  
K.S. da Cunha ◽  
M.G. Pereira ◽  
L.S.A. Gonçalves ◽  
A.P.C.G. Berilli ◽  
E.C. de Oliveira ◽  
...  
Keyword(s):  
Recurrent Selection ◽  
Reciprocal Recurrent Selection ◽  
Maize Populations

scholarly journals Frequency of the transposable element Uq in Iowa stiff stalk synthetic maize populations

1991 ◽  
Vol 57 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Kendall R. Lamkey ◽  
Peter A. Petérson ◽  
Arnel R. Hallauer
Keyword(s):  
Transposable Elements ◽  
Transposable Element ◽  
Genetic Drift ◽  
Recurrent Selection ◽  
Selective Advantage ◽  
Random Genetic Drift ◽  
Reciprocal Recurrent Selection ◽  
Linear Rate ◽  
Maize Population ◽  
Maize Populations

SummaryThe Uq transposable element is one of two transposable elements consistently found in maize (Zea mays L.) populations. Populations developed from two independent recurrent selection programs initiated in the Iowa Stiff Stalk Synthetic (BSSS) maize population were tested for the frequency of Uq transposable elements to determine how Uq frequency has changed with cycles of recurrent selection. In the first programme, 13 cycles of half-sib and S2 progeny recurrent selection [BSSS(S)C13] have been completed and 10 of the 13 cycles were assayed for active Uq elements. In the second programme, 11 cycles of reciprocal recurrent selection [BSSS(R)C11] have been completed and five of the 11 cycles were assayed for active Uq elements. The frequency of Uq was different for the two recurrent-selection programmes. The percentage of plants containing active Uq elements increased from 19% (BSSS) to 91% [BSSS(S)C13] at a linear rate after 13 cycles of half-sib and S2 progeny recurrent selection, whereas the percentage of plants containing active Uq elements decreased from 19% (BSSS) to 0% [BSSS(R)C11] after 11 cycles of reciprocal recurrent selection, with extinction of the Uq element occurring between the fifth and sixth cycles of selection. Our data suggest that the increase in frequency of Uq with half-sib and S2 progeny recurrent selection was predominantly due to random genetic drift coupled with a selective advantage possibly associated with a region of the genome linked to Uq. Neither replicative transposition or chromosome assortment and segregation can be invoked to explain the change in frequency of Uq in these populations. The extinction of Uq after reciprocal recurrent selection was best explained by random genetic drift.

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