Estimation of leaf area for greenhouse cucumber by linear measurements under salinity and grafting

Blanco, Flávio Favaro; Folegatti, Marcos Vinícius

doi:10.1590/s0103-90162005000400001

Cited by 112 publications

(84 citation statements)

References 7 publications

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“…Las DS (± 5,54% a ± 10,05%) se ubicaron dentro de los rangos registrados en la literatura: ± 11,50% a ± 21,27% (Blanco y Folegatti, 2005), ± 4,5 a ±10,5 (Williams y Martinson, 2003). Los estudios en otras especies agrícolas (Fallovo et al, 2008;Giuffrida et al, 2011;Jerez et al, 2014), muestran la existencia de relaciones similares entre el AR y las dimensiones lineales de las hojas.…”

Section: Estimación Del áRea Laminar Mediante Análisis De Regresiónunclassified

Área foliar del yacón (Smallanthus sonchifolius (Poep. & Endl.) H. Rob.) estimada mediante método indirecto.

2016

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El objetivo de este trabajo fue estimar el área foliar de ocho morfotipos de yacón mediante análisis de regresión lineal simple. La investigación se realizó entre los años 2014 y 2015, en el Programa de Raíces y Tubérculos Andinos de la Universidad Nacional de Cajamarca, Perú (7° 10’ 00’’ S, 78° 30’00’’ W, 2650 msnm). Se tomaron cien hojas de cada morfotipo, incluyendo hojas de los estratos basal, medio y terminal de plantas en plena oración. Las siluetas de las hojas frescas se dibujaron en papel y se midió el largo (L) y ancho mayor de la lámina (W). El área medida (o real) de la lámina se determinó con planímetro digital. Con el área medida (variable dependiente) y los valores de largo, ancho, largo al cuadrado, ancho al cuadrado, largo x ancho y largo/ancho (como variables independientes), se realizó el análisis de regresión para cada morfotipo. En todos los morfotipos, excepto en dos, las mejores ecuaciones para estimar el área foliar, fueron aquellas en donde intervino el producto de L x W. La ecuación A= 20,41 + 0,4167 (L x W) (r2 = 0,89) permitió estimar el área foliar de los ocho morfotipos en conjunto. El área del peciolo de los morfotipos en estudio signi có 15%, respecto del área total de la hoja.

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Section: Estimación Del áRea Laminar Mediante Análisis De Regresiónunclassified

Área foliar del yacón (Smallanthus sonchifolius (Poep. & Endl.) H. Rob.) estimada mediante método indirecto.

2016

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“…These parents could, therefore, be selected in hybridization programs for improving leaf size that would, in turn, enhance photosynthetic capacity. Leaf area is an important variable for most physiological and agronomic studies involving plant growth, light interception, photosynthetic efficiency, evapotranspiration, as well as responses to fertilizers and irrigation (Blanco and Folegatti 2005). General combining ability effects for fruit length varied from 0.7 (Sco4184) to (0.5 (Storm) ( Table 3).…”

Section: Gca Effects and Mean Performance Of The Parentsmentioning

confidence: 99%

“…Information about gene action with regards to different traits will be helpful in selecting appropriate breeding procedures aimed at fruit yield improvement. There are different traits that are related to fruit weight and fruit number such as fruit length; fruit diameter; fruit length/diameter (L:D) ratio; vine length; leaf area that includes leaf length and leaf width (Hormuzdi and More 1989; Serce et al 1999;Lopez-Sese and Staub 2002;Shetty and Wehner 2002;Blanco et al 2005;Fan et al 2006;Afangideh and Uyoh 2007;Cho et al 2007;De Wilde and Duyfjes 2010); number of nodes per vine (Singh et al 2011); plant height (Mule et al 2011); and phenological traits including days to 50% flowering, anthesis, and first female flower formation (Singh et al 2011). Leaf area is an important variable for most physiological and agronomic studies involving plant growth, light interception, photosynthetic efficiency, evapotranspiration, or response to fertilizers and irrigation (Blanco et al 2005).…”

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confidence: 99%

Combining ability analysis of fruit yield and morphological traits in greenhouse cucumber (Cucumis sativusL.)

2015

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-R. 2015. Combining ability analysis of fruit yield and morphological traits in greenhouse cucumber (Cucumis sativus L.). Can. J. Plant Sci. 95: 377Á385. Knowledge about the genetic control of the different quantitative characters related to fruit yield and its components is still insufficient in greenhouse cucumbers. This information is useful in planning breeding programs in this economically important crop. In this study, the genetics of morphological traits and fruit yield was investigated using a 9 )9 full diallel population of cucumbers for the greenhouse market. Data were collected on internode length, leaf length, leaf width, fruit length, fruit diameter, number of fruits per plant, yield per fruit and yield per plant. Variance components showed that both the additive and the dominant gene effects played significant roles in the genetic control of the traits studied. Genetic control of internode length, leaf width and number of fruits per plant was accomplished by additive effects. The significant mean squares of reciprocal crosses for all of the studied traits suggested that maternal inheritance also played an important role in the inheritance of these traits. Significant general combining ability for fruit yield revealed that both selection and hybridization methods would lead to desirable genetic improvements in cucumber through accumulation of desirable alleles from parents in the target genotype, but that hybridization would be preferred.Key words: Action, additive, diallel, dominance Golabadi, M., Golkar, P. et Eghtedary, A.-R. 2015. Analyse de l'aptitude a`la combinaison pour le rendement fruitier et les caracte`res morphologiques du concombre de serre (Cucumis sativus L.). Can. J. Plant Sci. 95: 377Á385. Nos connaissances sur le controˆle ge´ne´tique des diffe´rents caracte`res quantitatifs associe´s au rendement fruitier et a`ses e´le´ments laissent toujours ad e´sirer pour le concombre de serre. Or, de telles connaissances auraient leur utilite´pour planifier les programmes d'hybridation de cette culture importante pour l'e´conomie. Dans le cadre de cette e´tude, les chercheurs ont examine´la ge´ne´tique des caracte`res morphologiques et du rendement fruitier en recourant a`une population 9 )9 totalement dialle´le de concombres destine´s au marche´des le´gumes de serre. Les donne´es recueillies portaient sur la longueur des entrenaeuds, la longueur et la largeur des feuilles, le diame`tre des fruits, le nombre de fruits par plant, le rendement par fruit et le rendement par plant. Les composants de la variance indiquent que les effets des ge`nes additifs et dominants jouent un roˆle significatif dans le controˆle ge´ne´tique des caracte`res examine´s. La longueur des entrenaeuds, la largeur des feuilles et le nombre de fruits par plant sont ge´ne´tiquement controˆle´s par des effets additifs. La variance significative des croisements re´ciproques pour l'ensemble des caracte`res e´tudie´s laisse supposer que la transmission par la me`re joue aussi un roˆle important dans l'he´re´dite´de ces carac...

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“…Leaf area determination from linear leaf dimensions, such as maximum length and/or width, has been performed for melon (Nascimento et al, 2002), snap bean (Queiroga et al, 2003), cucumber (Nied et al, 2001), sunflower (Rouphael et al, 2007), radish among others, but it is possible to obtain simpler models with only one dimension of the leaf blade (Blanco and Folegatti, 2005;Maldaner et al, 2009a;Nascimento et al, 2002;Queiroga et al, 2003). Maldaner et al (2009b) developed a model to estimate eggplant LAI only by counting the number of leaves, but scientific studies require a higher accuracy.…”

Section: Introductionmentioning

confidence: 99%

Estimativa da área foliar da berinjela em função das dimensões foliares

et al. 2014

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This paper explores different models of non-destructive leaf area estimates for Solanum melongela L. by the measure of leaf length (C) and blade width (L). The methodology involved eggplant cultivation in the greenhouse from March to June. Plant leaves were sampled at random throughout the growing season, totalizing 186 leaves, of which 98 were used to estimate the model parameters and 88 were used for model validation. The samples covered wide spectrum of leaf dimensions, in order to minimize root mean square error (RMSE). Leaves were sampled at 71, 79, 81, 85, 92 and 99 days after transplanting. The highest possible numbers of leaf discs were obtained with a 25mm auger. Correlations were computed between the leaf area obtained by the discs method and the linear dimensions of L and C, the product of both (CL) and the square length multiplied by the width (C Estimativa da área foliar da berinjela em função das dimensões foliares ResumoEste trabalho explora diferentes modelos não destrutivos de estimativa da área foliar de Solanum melongela L. através de medidas do comprimento (C) e largura (L) do limbo foliar. Para tanto, um cultivo de berinjela em estufa plástica foi conduzido no período de março a junho de 2007. Amostraram-se folhas de plantas em momentos aleatórios totalizando 186 folhas, sendo 98 utilizadas na estimativa dos parâmetros dos modelos e 88 para sua validação. As amostragens abrangeram amplo espectro de dimensões foliares, visando minimizar a raiz do quadrado médio do erro (RQME) ) apresentaram melhores estimativas, com R 2 de 0,964 para ambos e RQME de 33,2 e 34,4, respectivamente. Com a medida apenas de uma dimensão foliar, o modelo quadrático (Y = -63,5+10,492L+0,2822L 2 ; R 2 = 0,937; RQME = 44,1) apresenta-se como alternativa, pouco afetando a precisão da estimativa..Palavras-chave: Solanum melongela L., índice de área foliar, modelagem.

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Estimation of leaf area for greenhouse cucumber by linear measurements under salinity and grafting

Cited by 112 publications

References 7 publications

Área foliar del yacón (Smallanthus sonchifolius (Poep. & Endl.) H. Rob.) estimada mediante método indirecto.

Área foliar del yacón (Smallanthus sonchifolius (Poep. & Endl.) H. Rob.) estimada mediante método indirecto.

Combining ability analysis of fruit yield and morphological traits in greenhouse cucumber (Cucumis sativusL.)

Estimativa da área foliar da berinjela em função das dimensões foliares

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