The selektron of the Institute for Horticultural Plant Breeding (IVT), Wageningen, the Netherlands

Smeets, L.

doi:10.1007/bf00021876

Cited by 13 publications

(12 citation statements)

References 1 publication

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“…Three experiments, each including five genotypes and Sonatine, were carried out in succession. In each experiment, in three growth rooms (SMEETS, 1978), each with its own temperature regime, the six genotypes were compared in eight replications. The following procedure was used.…”

Section: Methodsmentioning

confidence: 99%

Growth analyses of tomato genotypes grown under low night temperatures and low light intensity

Smeets¹,

Garretsen²

1986

Euphytica

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Section: Methodsmentioning

confidence: 99%

Growth analyses of tomato genotypes grown under low night temperatures and low light intensity

Smeets¹,

Garretsen²

1986

Euphytica

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“…The plants were pinched on 30 September and transferred to the IVT phytotron (Smeets, 1978) on 30 November . In the phytotron they were given an 8 hr day (light level 15 W/m 2 HPL visible radiation at plant level) and day/night temperatures of 13'/10'C .…”

Section: Methodsmentioning

confidence: 99%

“…The effects of daylength on flowering in carnations have been extensively studied for the last twenty years in all the major carnation growing countries : the United Kingdom (Harris & Ashford, 1966 ;Powell, 1979 ;Bunt & Powell, 1983), The Netherlands (Abou Dahab, 1971, Klapwijk, 1987, Denmark (Jensen & Bjerggaard, 1970), the USA (Cheng & Langhans, 1971 ;Heins & Wilkins, 1979 ;Healy & Wilkins, 1983), Germany GDR (Neubert & Kunert, 1977a, 1977b, 1978, and later also in Israel (Kadman-Zahavi & Ephrat, 1982) and Japan (Yonamura et al ., 1981) .…”

Section: Introductionmentioning

confidence: 99%

Variation between genotypes of carnation (Dianthus caryophyllus cultivars and interspecific hybrids) in time of flowering and response to long days. I. Variation in yield distribution

1990

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Early flowering carnation cultivars, responding to artificial long days, can assist the grower to plan the onset of flowering and achieve a better distribution of flower production over the year . A comparative trial is described of 20 carnation genotypes (cultivars and backcrosses of interspecific hybrids), representing a wide variation in flowering time and response to long days . The trial was planted in September in a phytotron under a winter light intensity of 15 W/mz for eight hours per day . In one half of the trial, daylength was increased to 24 hours for 25 days in December-January . At the end of February the plants were transferred to a glasshouse where they were observed until all primary shoots had flowered . The main purpose of the experiment was to analyse the genetic factors responsible for the large differences in flowering behaviour between genotypes . Average flowering dates varied from 132 days from pinching in a Dianthus chinensis hybrid to 181 days in the mediterranean cultivar `Raggio di Sole' . LD response was most pronounced in the earliest flowering Diantini selections and least in the traditional commercial cultivars . In the former the LD effect was evident in all shoots of a plant, but mostly so in the lower (older) shoots ; in the traditional cultivars only the higher placed shoots responded to LD . As a result, the proportion of the shoots actually responding to LD varied from 28% in the traditional cultivars to 54% in the Diantini X D .'Allwoodii' cv 'Doris' group of genotypes .

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“…The progenies in a block of the first replicate were divided over the 11 blocks of the second replicate (unbalanced lattice). The seed trays were placed in a climate room of the phytotron (SMEETS, 1978) at 25 "C in darkness.…”

Section: Methodsmentioning

confidence: 99%

“…The carts of each replicate were placed in a separate growth room of the selektron (SMEETS, 1986) kept at 20°C by day and 18 "C by night under light conditions as before. On March 31 temperature was lowered to 19°C by day and 14°C by night and on April 11 to 19°C by day and 10°C by night.…”

Section: Methodsmentioning

confidence: 99%

Inheritance of growth characters of tomato (Lycopersicon esculentum Mill.) under low energy conditions

Smeets¹,

Garretsen²

1986

Euphytica

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Lycopersicon esculenrcnn, tomato, genotypes, diallel cross, growth analysis, low energy conditions, MANO-VA, combining ability. ABBREVIATIONS W = dry weight of the plant; RGR = relative growth rate; NAR = net assimilation rate; LAR = leaf area ratio; SLA = specific leaf area; LWR = leaf weight ratio; MANOVA = multivariate analysis of variance; GCA = general combining ability; SCA = specific combining ability. SUMMARYTo study the mode of inheritance of W, RGR, NAR, LAR, SLA and LWR, the growth of 15 tomato genotypes and 104 of their Fl's was analyzed. The plants were grown at a 19°C day temperature and a 10°C night temperature under a light intensity of 24 Wrn-' visible radiation and a daylength of 8 hours. Combining ability analyses of variance revealed highly significant differences in GCA values between parents for all characters studied and significant SCA values for some of the characters. GCA values for NAR and LAR, and for NAR and SLA were strongly negatively correlated. A strong positive correlation existed between GCA values for LAR and SLA. The possibilities for improving growth under low energy conditions by using growth characters in breeding are discussed.

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The selektron of the Institute for Horticultural Plant Breeding (IVT), Wageningen, the Netherlands

Cited by 13 publications

References 1 publication

Growth analyses of tomato genotypes grown under low night temperatures and low light intensity

Growth analyses of tomato genotypes grown under low night temperatures and low light intensity

Variation between genotypes of carnation (Dianthus caryophyllus cultivars and interspecific hybrids) in time of flowering and response to long days. I. Variation in yield distribution

Inheritance of growth characters of tomato (Lycopersicon esculentum Mill.) under low energy conditions

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