VERMICULITE–PERLITE–CLAY MIXTURES AS CONTAINER GROWTH MEDIA

1975 ◽  
Vol 55 (3) ◽  
pp. 771-774 ◽  
Author(s):  
WALLACE G. PILL ◽  
VICTOR N. LAMBETH
Keyword(s):  
Lycopersicon Esculentum ◽  
Vegetative Growth ◽  
Fruit Yield ◽  
Test Plant ◽  
Growth Media ◽  
Lycopersicon Esculentum Mill ◽  
Large Yield

Vermiculite–perlite–clay (Putnam subsoil) mixtures with added nutrients were evaluated as growth media for periods up to 112 days in 3.8-liter jars using tomato (Lycopersicon esculentum Mill. cv. Patio Hybrid) as a test plant. Although vermiculite–perlite (V–P) ratio had no effect, subsoil levels above 50 g/jar and low N rate (22.5 meq/50 g subsoil) gave greatest growth of 42-day transplants. For long-term periods (112 days), only fruit yield was affected by V–P ratio, a 1:1 (vol/vol) proportion giving the highest yield. Large yield increases were obtained by increasing subsoil to the 150-g or 300-g levels. Fresh and dry plant weights increased with each increment of subsoil, and high N rate (45 meq/50 g subsoil) increased both vegetative growth and fruit yield to levels approaching those obtained with Cornell peat-lite mix A. The V–P clay mixes held more than twice the available moisture present in the peat-lite mix.

scholarly journals Relationship between Fruit Yield and its Components in Tomato (Lycopersicon esculentum Mill.) Cultivars using Multivariate Statistical Methods

2018 ◽  
Vol 9 (24) ◽  
pp. 22-29
Author(s):  
Akram Ghorbanpour ◽  
Azam Salimi ◽  
Mohammad Ali Tajick Ghanbary ◽  
Hemmatollah Pirdashti ◽  
Ali Dehestani ◽  
...  
Keyword(s):  
Lycopersicon Esculentum ◽  
Statistical Methods ◽  
Fruit Yield ◽  
Multivariate Statistical Methods ◽  
Multivariate Statistical ◽  
Lycopersicon Esculentum Mill

EDIBLE PINK-FRUITED TOMATO (LYCOPERSICON ESCULENTUM MILL. CONVAR. ESCULENTUM VAR. ROSEUM KHRAP.): SOURCE MATERIAL FOR BREEDING

2020 ◽  
Author(s):  
I.A. KHRAPALOVA ◽  
Keyword(s):  
Lycopersicon Esculentum ◽  
Growth Habit ◽  
Agronomic Traits ◽  
Fruit Shape ◽  
Stem Growth ◽  
Local Varieties ◽  
Lycopersicon Esculentum Mill ◽  
Inflorescence Morphology ◽  
Botanical Classification

This catalogue contains a description of morphological, biological and useful agronomic traits in 153 accessions of cultivated edible tomato (Lycopersicon esculentum Mill.) with pink fruits from the VIR collection. The data were obtained in the course of many years in winter rack glasshouses and plastic greenhouses at Pushkin and Pavlovsk Laboratories of VIR (St. Petersburg). The catalogue has been intended to help breeders, researchers, experts and farmers in gaining knowledge about pink-fruited tomato genetic resources that have been accumulated in the VIR collection for almost a hundred years. Cultivars developed through scientific breeding and local varieties are quite diverse in their earliness, fruit shape and size, stem growth habit and pattern, leaf and inflorescence morphology, etc. Their diversity described in the catalogue has been systemized in accordance with the botanical classification developed by the author of the catalogue on the basis of long-term research into the collection.

INFLUENCE DE L’ENRICHISSEMENT CARBONÉ ET DE SON MODE DE DISTRIBUTION SUR L’ÉVOLUTION DES ÉCHANGES GAZEUX DE LA TOMATE DE SERRE

1990 ◽  
Vol 70 (1) ◽  
pp. 345-356 ◽  
Author(s):  
A. DUGAL ◽  
S. YELLE ◽  
A. GOSSELIN
Keyword(s):  
Stomatal Conductance ◽  
Lycopersicon Esculentum ◽  
Net Photosynthesis ◽  
Long Term Effects ◽  
Gas Exchanges ◽  
Tomato Seedlings ◽  
Lycopersicon Esculentum Mill ◽  
Échanges Gazeux ◽  
Very High

Net photosynthesis, stomatal conductance, internal CO2 concentration and transpiration were measured on the fifth well-developed and excised leaf of tomato seedlings (Lycopersicon esculentum Mill. ’Vedettos’) 48–83 d old. These measurements were taken in order to monitor the evolution of the gas exchanges of seedlings exposed to concentrations of 330 or 1000 ppm, continuously, to 1000 ppm from 06: 00 h to 10: 00 h or to 1000 and 330 ppm alternately every 2 h. CO2 enrichment substantially increased the net photosynthesis rate of the seedlings, particularly at the beginning of the experiment. The long-term effects of CO2 enrichment subsided after a few weeks of treatment. Intermittent CO2 enrichment is partially helpful in remedying the loss of effectiveness of the CO2 after a long period of enrichment. High CO2 concentrations reduced the opening of the stomata. Our work shows that maintaining a high internal CO2 content in the leaves would indirectly reduce the stomatal conductance of the seedlings. However, our results show that the long-term loss of photosynthetic efficiency in the enriched seedlings cannot be attributed solely to an increase in the resistance of the stomata, since the internal CO2 concentration of the leaves remains very high regardless of which method of CO2 enrichment is used. Continuous CO2 enrichment improved the water uptake efficiency of the seedlings.Key words: Carbon dioxide, intermittent enrichment, gas exchanges, tomato, greenhouse, Lycopersicon esculentum Mill.

Sign in / Sign up

Export Citation Format

Share Document