Early selection of sugarcane using path analysis

ABSTRACT Correlations and path analysis between characteristics can aid the selection of important attributes in breeding programs. Thus, the objective of this work was to perform genotypic, phenotypic correlations and path analysis under commercial yield of garlic bulbs, depending on morphological and agronomic variables. The experiment was carried out in 2017 at the Universidade Federal dos Vales do Jequitinhonha e Mucuri and Universidade Federal de Lavras, using ten garlic genotypes, eight trials and two commercial cultivars, Caçador and Jonas. We evaluated: plant height; number of leaves, total bulb number; total bulb mass, total bulb yield, marketable bulb yield and number of cloves per bulb. The genotypic and phenotypic correlations were positive and significant between marketable yield of bulbs with bulb mass, total yield and number of cloves per bulb, indicating that selection based on these characteristics will help increase the yield of garlic. However, only the number of cloves per bulb had a direct effect and a relevant indirect effect on the marketable yield of garlic.

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Path analysis for selection of feijoa with greater pulp weight

Ciência Rural ◽

10.1590/0103-8478cr20161062 ◽

2017 ◽

Vol 47 (6) ◽

Cited By ~ 2

Author(s):

Joel Donazzolo ◽

Vanessa Padilha Salla ◽

Simone Aparecida Zolet Sasso ◽

Moeses Andrigo Danner ◽

Idemir Citadin ◽

...

Keyword(s):

Path Analysis ◽

Indirect Selection ◽

Total Weight ◽

Direct And Indirect Effects ◽

Rio Grande Do Sul ◽

Basic Variable ◽

Explanatory Variables ◽

Acca Sellowiana ◽

Number Of Seeds ◽

Selection Of

ABSTRACT: The objective of this paper was to identify the direct and indirect effects of feijoa fruits (Acca sellowiana) traitson pulp weight, in order to use these traits in indirect genotypes selection. Fruits of five feijoa plants were collected in Rio Grande do Sul, in the years of 2009, 2010 and 2011. Six traits were evaluated: diameter, length, total weight, pulp weight, peel thickness and number of seeds per fruit. In the path analysis, with or without ridge regression, pulp weight was considered as the basic variable, and the other traits were considered as explanatory variables. Total weight and fruit diameter had high direct effect, and are the main traits associated with pulp weight. These traits may serve as criteria for indirect selection to increase feijoa pulp weight, since they are easy to be measured.

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Über einige Probleme der Anwendung der Pfadanalyse – Bemerkungen zu einer Studie über soziokulturelle Determinanten der Fähigkeit zum Role-Taking / On some problems in applying path analysis – Comments on a study of sociocultural determinants of role-taking

Zeitschrift für Soziologie ◽

10.1515/zfsoz-1977-0103 ◽

1977 ◽

Vol 6 (1) ◽

Cited By ~ 1

Author(s):

Wolfgang Jagodzinski ◽

Michael Zängle

Keyword(s):

Path Analysis ◽

Symbolic Interactionism ◽

Causal Model ◽

Developmental Approach ◽

Role Taking ◽

Testing Procedures ◽

Recursive Models ◽

Selection Of Variables ◽

Selection Of ◽

Identification Procedures

AbstractThis paper is about a causal model of role-taking recently suggested by BERTRAM and BERTRAM. The model tries to combine aspects of the cognitive-developmental approach as proposed by BRUNER, PIAGET, and WYGOTSKI,and symbolic interactionism as advocated by LINDESMITH and STRAUSS. While the selection of variables is handled rather carefully, the identification and testing procedures may be criticized in three respects: They are tautological because the same equations are used for identifying and testing the model, they are contradictory because identification procedures applicable to recursive models only are applied to a nonrecursive model, and they are fragmentary because only a few although the most important of the possible comparisons of implied and observed correlations are computed. Thus, some of the author’s major conclusions seem not to warranted by the rules of path analysis.

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Estimate of genetic parameters and predicted gains with early selection of physic nut families

Ciência e Agrotecnologia ◽

10.1590/s1413-70542012000200004 ◽

2012 ◽

Vol 36 (2) ◽

pp. 163-170 ◽

Cited By ~ 13

Author(s):

Bruno Galvêas Laviola ◽

Alexandre Alonso Alves ◽

Fábio de Lima Gurgel ◽

Tatiana Barbosa Rosado ◽

Rhayanne Dias Costa ◽

...

Keyword(s):

Grain Yield ◽

Genetic Parameters ◽

Genetic Variance ◽

Additive Genetic Variance ◽

Biodiesel Production ◽

Early Selection ◽

Physic Nut ◽

Genetic Gains ◽

Canopy Volume ◽

Selection Of

An initial evaluation of early selection of physic nut genotypes based on phenotypic data is presented. In order to predict the genetic gains with early selection, genetic parameters, e.g. additive genetic variance, were first obtained for grain yield along with other numerous traits. The results demonstrated that additive genetic variance exists not only for grain yield, which is considered to be the most important trait for oil and biodiesel production, but also for numerous other traits. The predicted genetic gains for grain yield, considering the selection of the 30, 20, 10 and 5 best families in the second crop year are respectively, 40.47, 48.43, 61.78 and 70.28%. With the selection of highly yielding physic nut genotypes indirectly genotypes with enhanced volume would be also selected, because yield exhibits moderate to high genetic correlations with height e canopy volume. The results here presented demonstrate the potential of the population gathered in the Brazilian physic nut germplasm bank for genetic breeding purposes and that superior physic nut families can be selected with high accuracy based on the evaluation of its second crop.

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