Comparison between responses to gametophytic and sporophytic recurrent selection in maize (Zea mays L.)

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
P LandiS Conti

Abstract

In order to evaluate the response at both the gametophytic and sporophytic level of a selection based on the pollen competitive ability and to compare its effects with those obtainable from a conventional sporophytic procedure, three recurrent selection plans were developed in maize starting from the same F2 population. Two gametophytic recurrent selection procedures at high (GSH) and low (GSL) selection intensity were performed by utilizing, to advance the populations, kernels taken from the base (GSH) or apex (GSL) of ears obtained from pair-crosses of randomly chosen plants. The third scheme was a sporophytic full-sib recurrent selection procedure (SS); the only selection criterion was the machine-harvestable grain yield of the families. In a sixyear period of selection, six cycles of both GSH and GSL and three cycles of SS were performed. The source and the selected populations (16 entries) were tested for pollen performance and for sporophytic traits. The selection cycles advanced through GSH showed a progressive increase, as compared to GSL, in pollen tube length measured at 4 h of in vitro culture. The SS cycles response was intermediate at 4 h whereas at 2 h it exceeded both GSH and GSL. A slight decrease in pollen diam...Continue Reading

References

Apr 1, 1986·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M Sari GorlaE Ottaviano
Mar 1, 1985·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·K B Searcy, D L Mulcahy
Jul 1, 1984·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·N T MascarenhasJ P Mascarenhas
Sep 1, 1982·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·E OttavianoE Pe
Mar 1, 1978·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·D V Ter-Avanesian
Sep 1, 1978·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·C M Johnson, D L Mulcahy
Jan 1, 1975·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·D L Mulcahy, G B Mulcahy
Jan 1, 1975·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M Sari GorlaD Faini

Citations

Jul 25, 2000·Biochemical and Biophysical Research Communications·K Tsuji, M Noda
Aug 1, 1994·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M Sari-GorlaM Villa
Dec 5, 2006·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·R L RavikumarS G Hegde
Sep 1, 1990·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·K B Searcy, D L Mulcahy
Apr 1, 1992·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·J I Hormaza, M Herrero
Dec 29, 2020·Plant Communications·Felix E G BeaudryStephen I Wright

Related Concepts

Cereals
Zea mays
Glutathione
Pollen
Selection for Treatment
Plant Leaves
Laboratory Culture
Population Group

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Alzheimer's Disease: MS4A

Variants within the membrane-spanning 4-domains subfamily A (MS4A) gene cluster have recently been implicated in Alzheimer's disease in genome-wide association studies. Here is the latest research on Alzheimer's disease and MS4A.

Pediculosis pubis

Pediculosis pubis is a disease caused by a parasitic insect known as Pthirus pubis, which infests human pubic hair, as well as other areas with hair including eye lashes. Here is the latest research.

Rh Isoimmunization

Rh isoimmunization is a potentially preventable condition that occasionally is associated with significant perinatal morbidity or mortality. Discover the latest research on Rh Isoimmunization here.

Genetic Screens in iPSC-derived Brain Cells

Genetic screening is a critical tool that can be employed to define and understand gene function and interaction. This feed focuses on genetic screens conducted using induced pluripotent stem cell (iPSC)-derived brain cells. It also follows CRISPR-Cas9 approaches to generating genetic mutants as a means of understanding the effect of genetics on phenotype.

Enzyme Evolution

This feed focuses on molecular models of enzyme evolution and new approaches (such as adaptive laboratory evolution) to metabolic engineering of microorganisms. Here is the latest research.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Pharmacology of Proteinopathies

This feed focuses on the pharmacology of proteinopathies - diseases in which proteins abnormally aggregate (i.e. Alzheimer’s, Parkinson’s, etc.). Discover the latest research in this field with this feed.

Alignment-free Sequence Analysis Tools

Alignment-free sequence analyses have been applied to problems ranging from whole-genome phylogeny to the classification of protein families, identification of horizontally transferred genes, and detection of recombined sequences. Here is the latest research.