Path analysis for selection of drought tolerant sugarcane genotypes through physiological components

Silva, Paulo Pedro da; Soares, Laílton; Costa, João Gomes da; Viana, Luciana da Silva; Andrade, Júlio César Farias de; Gonçalves, Eduardo Rebêlo; Santos, João Messias dos; Barbosa, Geraldo A.; Nascimento, Velber Xavier; Todaro, Adriana Reis; Riffel, Alessandro; Grossi‐de‐Sá, Maria Fátima; Barbosa, Márcio Henrique Pereira; Santana, Antônio Euzébio Goulart; Neto, Cícero Eduardo Ramalho

doi:10.1016/j.indcrop.2011.11.015

Cited by 55 publications

(56 citation statements)

References 23 publications

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“…However, correlation might not be a measure of cause and effect, and direct interpretation of its magnitudes may result in mistakes in selection strategy. High correlation in some cases may be the result of the effect of a third variable or of a group of variables on the response variable (Silva et al 2012). Path analysis allows the correlation coefficients to be broken down into direct and indirect effects on a main variable (Tyagi and Lal 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Others, however, in addition to phenotypic correlation, have also used genotypic correlation obtained as based on decomposition of variance and covariance components (Ferreira et al 2007, Espósito et al 2012, Silva et al 2012). For Silva et al (2009), genetic correlations (Pearson correlation) obtained from the genotypic mean values predicted from mixed models (REML/ BLUP), are more efficient in determination of the direct and indirect effects of the traits.…”

Section: Introductionmentioning

confidence: 99%

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Consistency of the results of path analysis among sugarcane experiments

Brasileiro¹,

Peternelli²,

Barbosa³

2013

Crop Breed. Appl. Biotechnol.

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-The aim of this research was to evaluate the consistency of path analyses in sugarcane experiments based on genetic, phenotypic and genotypic correlations. Forty-four analyses were made with a view toward quantifying the direct and indirect effects of stalk height (SH), stalk diameter (SD) and number of stalks (NS) on sugarcane weight (SW). NS had the greatest direct effect on SW in all the analyses with the use of genetic and phenotypic correlations and in 12 analyses with use of the genotypic correlations. SD had a high direct effect on SW, going beyond NS in only one experiment, while SH had the lowest direct effect on SW in most of the experiments. The results showed greater consistency with the use of genetic and phenotypic correlations. In the balanced experiments, the phenotypic and genetic correlations showed equivalent results. NS is the main determinant of changes in sugarcane production.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Consistency of the results of path analysis among sugarcane experiments

Brasileiro¹,

Peternelli²,

Barbosa³

2013

Crop Breed. Appl. Biotechnol.

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“…Aditionally, low NPQ has been reported to provide protection against photo-oxidative damage (Müller et al 2001;Omasa and Takayama 2003). In a recent study, a reduction in F v / F m and Φ PSII in some sugarcane cultivars was observed, and it resulted in reduced P n (Rodrigues et al 2009;da Silva et al 2012). Previously, P n has been demonstrated to be a very sensitive parameter for the classification of sugarcane germplasm for drought tolerance (de Silva and de Costa 2009; da ) and it has been found to hold good in the present study and useful in screening the sugarcane cultivars for drought tolerance.…”

Section: Chlorophyll Fluorescence and Photosynthetic Capacitymentioning

confidence: 97%

“…Likewise, in spinach, chlorophyll content per fresh weight of leaf increased when there was a reduced relative water content (Gupta and Berkowitz 1988). In of late, studies have reported no change in TC content in drought tolerant cultivars (HOCP01-523, TCP89-3505, and RB867515) of sugarcane under osmotic stress da Silva et al 2012). Chlorophyll degradation in sugarcane exposed to osmotic stress may have a negative effect on photosynthetic capacity, especially in the PSII light harvesting complex (Cha-um and Kirdmanee 2008).…”

Section: Photosynthetic Pigmentsmentioning

confidence: 99%

Evaluating sugarcane (Saccharum sp.) cultivars for water deficit tolerance using some key physiological markers

Cha–um

Wangmoon

Mongkolsiriwatana

et al. 2012

Plant Biotechnology

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Seven sugarcane (Saccharum sp.) commercial cultivars, viz., , originally derived from meristem cuttings were subjected to simulated osmotic stress (as 200 mM mannitol) under controlled environmental conditions. Proline content in the leaf tissues of all cultivars except K92-80, increased in plants subjected to mannitol-induced osmotic stress. Chlorophyll a (Chl a ), chlorophyll b (Chl b ), total chlorophyll (TC), maximum quantum yield of PSII (F v /F m ), and photon yield of PSII (Φ PSII ) of all seven cultivars decreased under osmotic stress resulting in a reduction in net-photosynthetic rate (P n ). A positive correlation was found between F v / F m and Φ PSII , proline content and non-photochemical quenching (NPQ), Φ PSII and P n , and P n and plant dry weight in the sugarcane cultivars. Based upon Ward's multivariate cluster analyses of data for proline content, photosynthetic capacity, chlorophyll fluorescence, and growth inhibition, three cultivars (K88-92, K92-80 and UT-94-2-483) were identified as water deficit sensitive, whereas four (K84-200, K95-84, K97-32 and LK92-11) as water deficit tolerant. These observations on different cultivar's sensitivity/tolerance were confirmed by growth and yield attributes measured in a field trial. The plant dry weight (in vitro) correlated positively with total stalk weight of sugarcane cultivars

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“…New agricultural areas have been used, including regions with adverse edaphoclimatic conditions (Endres et al, 2010;Silva et al, 2012). In order to increase production without having to incorporate new areas, clones that are more productive and adapted to different productive regions should be indicated by the breeding programs and incorporated in the fieldwork in a short amount of time.…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity and coefficient of parentage between clones and sugarcane varieties in Brazil

Brasileiro¹,

Marinho²,

Costa³

et al. 2014

Genet. Mol. Res.

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ABSTRACT. The success of the development of new sugarcane varieties is associated with the ability to correctly select the genitor. The aim of this study was to evaluate the genetic diversity between 113 clones and sugarcane varieties using the Ward-modified location model procedure with added information about the coefficient of parentage and endogamy. In this study, data was used from 100 experiments that evaluated clones; the experimental phase was conducted in 70 places between the years 2002 and 2009 on the outlining in random blocks. According to the diversity analysis, 3 groups formed: G1, G2, and G3, which were composed of 58, 8, and 47 genotypes, respectively. The clones of groups G1 and G3 were the most outstanding. Thus, biparental crossbreeding involving clones and varieties of these 2 groups can efficiently obtain transgressive genotypes. Knowledge of the heterotypic groups indicated by the Ward-modified location model method, along with the parentage information, will make it a lot easier to define the desirable and undesirable crossbreeds for public and private breeding programs that develop sugarcane varieties.

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Path analysis for selection of drought tolerant sugarcane genotypes through physiological components

Cited by 55 publications

References 23 publications

Consistency of the results of path analysis among sugarcane experiments

Consistency of the results of path analysis among sugarcane experiments

Evaluating sugarcane (Saccharum sp.) cultivars for water deficit tolerance using some key physiological markers

Genetic diversity and coefficient of parentage between clones and sugarcane varieties in Brazil

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