Inbred Line Extraction From Improved Breeding Populations

1975 ◽  
Vol 41 (1) ◽  
pp. 1-8 ◽  
Author(s):  
L. L. Darrah ◽  
L. H. Penny
Keyword(s):  
Inbred Line ◽  
Line Extraction ◽  
Breeding Populations

scholarly journals Inbreeding depression in maize populations and its effects on the obtention of promising inbred lines

2017 ◽  
Vol 38 (5) ◽  
pp. 2981 ◽  
Author(s):  
Deoclecio Domingos Garbuglio ◽  
José Branco de Miranda Filho ◽  
Pedro Mário de Araújo ◽  
Antonio Carlos Gerage
Keyword(s):  
Linear Regression ◽  
Inbreeding Depression ◽  
Inbred Line ◽  
Agronomic Traits ◽  
Future Generation ◽  
Inbred Lines ◽  
Line Extraction ◽  
Regression Methods ◽  
Maize Populations ◽  
Environmental Component

Inbreeding can potentially be used for the development of inbred lines containing alleles of interest, but the genetic causes that control inbreeding depression are not completely known, and there are few studies found in the literature. The present study aimed to obtain estimates of inbreeding depression for eight traits in seven tropical maize populations, analyze the effects of inbreeding over generations and environments, and predict the behavior of inbred lines in future generation S? through linear regression methods. It was found that regardless of the base population used, prediction values could vary when the model was based on only 2 generations of inbreeding due to the environmental component. The influence of the environment in this type of study could be reduced when considering 3 generations of inbreeding, allowing greater precision in predicting the phenotypes of inbred lines. The use of linear regression was effective for inbred line prediction for the different agronomic traits evaluated. The use of 3 levels of inbreeding minimizes the effects of the environmental component in inbred line prediction for grain yield. GO-S was the most promising population for inbred line extraction.

scholarly journals Extracting female inbred lines from commercial sunflower hybrids

2008 ◽  
Vol 43 (9) ◽  
pp. 1159-1162 ◽  
Author(s):  
Claudio Guilherme Portela de Carvalho ◽  
José Francisco Ferraz de Toledo
Keyword(s):  
Helianthus Annuus ◽  
Inbred Line ◽  
Extraction Methods ◽  
Inbred Lines ◽  
Male Sterile ◽  
Fertility Restorer ◽  
Fertility Restorer Gene ◽  
Line Extraction ◽  
Rf Gene ◽  
Labor Consuming

The objective of this study was to obtain female inbred lines from sunflower (Helianthus annuus) hybrids. A methodology based on altering inbred lines carrying the fertility restorer gene (Rf) obtained from self pollinating hybrids into inbred lines with normal cytoplasm without the Rf gene was described. Further, derived male-sterile inbred lines were developed. The methodology was successfully used to obtain female inbreds from sunflower commercial hybrids. Although more time and labor consuming than the conventional female inbred line extraction methods, this methodology is advantageous in exploiting superior germplasms (commercial hybrids), which prompted us to develop practical procedures to allow its routinely use.

Evaluation of sugar beet breeding populations based morpho-physiological characters under salinity stress

2018 ◽  
Vol 51 (1) ◽  
Author(s):  
Mehdi Taghizadegan ◽  
Mahmoud Toorchi ◽  
Mohammad Moghadam Vahed ◽  
Samar Khayamim
Keyword(s):  
Sugar Beet ◽  
Salinity Stress ◽  
Breeding Populations ◽  
Physiological Characters

Steigende Bestandszahlen bei Spechten und anderen Vogelarten dank Zunahme von Totholz? | An increase in the population of woodpeckers and other bird species thanks to an increase in the quantities of deadwood?

2009 ◽  
Vol 160 (11) ◽  
pp. 334-340 ◽  
Author(s):  
Pierre Mollet ◽  
Niklaus Zbinden ◽  
Hans Schmid
Keyword(s):  
Forest Inventory ◽  
Bird Species ◽  
National Forest Inventory ◽  
Population Increase ◽  
National Forest ◽  
Forest Species ◽  
Breeding Populations ◽  
Willow Tit ◽  
Middle Spotted Woodpecker ◽  
Important Habitat

Results from the monitoring programs of the Swiss Ornithological Institute show that the breeding populations of several forest species for which deadwood is an important habitat element (black woodpecker, great spotted woodpecker, middle spotted woodpecker, lesser spotted woodpecker, green woodpecker, three-toed woodpecker as well as crested tit, willow tit and Eurasian tree creeper) have increased in the period 1990 to 2008, although not to the same extent in all species. At the same time the white-backed woodpecker extended its range in eastern Switzerland. The Swiss National Forest Inventory shows an increase in the amount of deadwood in forests for the same period. For all the mentioned species, with the exception of green and middle spotted woodpecker, the growing availability of deadwood is likely to be the most important factor explaining this population increase.

Genome-Wide Analysis of NBS-Encoding Disease Resistance Genes in Maize Inbred Line B73

2009 ◽  
Vol 35 (3) ◽  
pp. 566-570 ◽  
Author(s):  
Jie-Ming WANG ◽  
Hai-Yang JIANG ◽  
Yang ZHAO ◽  
Yan XIANG ◽  
Su-Wen ZHU ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Inbred Line ◽  
Resistance Genes ◽  
Disease Resistance Genes ◽  
Maize Inbred Line ◽  
Genome Wide Analysis ◽  
Genome Wide

The ffs Allele Conditions Flower Stem Fasciation in Red Beet

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 527f-528
Author(s):  
I.L. Goldman
Keyword(s):  
Genetic Control ◽  
Inbred Line ◽  
Goodness Of Fit ◽  
Female Parent ◽  
Inbred Lines ◽  
Chi Square ◽  
Recessive Character ◽  
Variable Expression ◽  
Red Beet ◽  
Flower Stem

A fasciated flower stem character arose spontaneously during development of the red beet (Beta vulgaris L.) inbred line W411. The fasciated character is manifest by a flattened flower stem with petioles coalesced into a twisted, ribbonlike appearance. No fasciation is present in the vegetative stem or petioles. An inheritance study was conducted to determine the genetic control of flower stem fasciation. The inbred line W411 was used both as a male and female parent in crosses with four red beet inbred lines. Segregating progenies in both the BC1 and F2 generations were developed and scored for the fasciated flower stem character. Variable expression of the fasciated flower stem phenotype was observed in these progenies; however, the presence of flattened flower stems at the stem/hypocotyl junction was unequivocal. Chi-square goodness-of-fit tests in both the BC1 and F2 generations did not deviate significantly from expected ratios for a monogenic recessive character for each genetic background. No reciprocal differences were detected for any cross in this group of four inbred lines, which suggests the lack of maternal effect for the fasciated character. The symbol ffs is proposed to describe the genetic control of the fasciated flower stem phenotype.

Line Source Irrigation to Assess Maize Inbred Line Stability 1

Crop Science ◽  
1987 ◽  
Vol 27 (2) ◽  
pp. 354-356 ◽  
Author(s):  
Z. W. Wicks ◽  
M. L. Carson
Keyword(s):  
Inbred Line ◽  
Line Source ◽  
Maize Inbred Line
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