The effects of various night-temperature regimes on the vegetative growth and fruit production of tomato plants

1985 ◽  
Vol 27 (1-2) ◽  
pp. 9-13 ◽  
Author(s):  
E. Khayat ◽  
D. Ravad ◽  
N. Zieslin
Keyword(s):  
Vegetative Growth ◽  
Fruit Production ◽  
Night Temperature ◽  
Tomato Plants ◽  
Temperature Regimes

scholarly journals The effect of using grafted seedlings on the yield and quality of tomatoes grown in greenhouses 

2018 ◽  
Vol 45 (No. 2) ◽  
pp. 76-82 ◽  
Author(s):  
Rodica Soare ◽  
Maria Dinu ◽  
Cristina Babeanu
Keyword(s):  
Fruit Quality ◽  
Vegetative Growth ◽  
Morphological Characteristics ◽  
Fruit Production ◽  
Soluble Solids ◽  
Average Weight ◽  
Appreciable Effect ◽  
Tomato Plants ◽  
Production Characteristics

This study was aimed at observing the effect of the grafting of tomato plants on morphological (vegetative growth), production and nutritive characteristics (quantity and quality of production). For this purpose, the ‘Lorely F1’ cultivar was used as a scion grafted onto the ‘Beaufort’ rootstock. Plants were cultivated with a stem and two stems. The observations collected in this study were concerned with the characteristics of plant growth. The studied morphological characteristics were plant height, stem diameter and number of leaves, and the studied production characteristics were the characteristics of fructification and productivity (the average number of fruit per plant, the average weight of the fruit, production per plant). Particular attention was paid to the nutritional characteristics of the fruit, to the fruit quality (total soluble solids, total sugar, acidity, vitamin C, antioxidant activity (by the Trolox method) and the contents of lycopene and beta-carotene). The results showed that grafting positively influenced the growth and production characteristics. Grafting of tomato plants had an appreciable effect on the vegetative growth of the variant 2-grafted tomatoes with a stem. The best option in terms of productivity and production was the variant 3-grafted tomatoes with two stems, which yielded 9.2 kg per plant. Fruit quality was not improved in any of the grafted variants. 

Environmental Control of Flowering of Boronia megastigma (Rutaceae) and Hypocalymma angustifolium (Myrtaceae)

1994 ◽  
Vol 42 (2) ◽  
pp. 219 ◽  
Author(s):  
JS Day ◽  
BR Loveys ◽  
D Aspinall
Keyword(s):  
Temperature Regime ◽  
Flower Development ◽  
Vegetative Growth ◽  
Environmental Control ◽  
Night Temperature ◽  
Root Temperature ◽  
Aerial Parts ◽  
Temperature Regimes ◽  
Controlled Flowering

The flowering responses of Boronia megastigma Nees (Rutacae) and Hypocalymma angustifolium Endl. (Myrtaceae) to different photoperiod and temperature regimes were similar despite the fact that these species are from different families. No flowers reached anthesis in a temperature regime of 25°C day/17°C night but flowering of both species occurred in a cool temperatures (17°C day/9°C night). Photoperiod had no effect on flowering at the temperatures tested. Ten weeks of cool temperatures (17°C day/9°C night) were required for a maximum number of flowers to reach anthesis on H. angustifolium plants whereas B. megastigma plants required 15 weeks. Flower development in both species was inhibited by a large difference between day and night temperature (21°C day/5°C night) and promoted if the day/night difference was reversed (9°C day/17°C night). The temperature of the aerial parts of the plant controlled flowering, whereas vegetative growth was controlled by root temperature. Therefore, while a reduction in vegetative growth naturally coincides with the production of flowers, these events are not necessarily linked.

Temperature Effects on Vegetative Growth of Round-Leaved Mallow (Malva pusilla)

Weed Science ◽  
1996 ◽  
Vol 44 (1) ◽  
pp. 63-67
Author(s):  
Robert E. Blackshaw
Keyword(s):  
Vegetative Growth ◽  
Dry Matter ◽  
Weight Ratio ◽  
Control Program ◽  
Effective Control ◽  
Dry Matter Accumulation ◽  
Night Temperature ◽  
Temperature Regimes ◽  
Matter Production ◽  
C Partitioning

Vegetative growth response of round-leaved mallow to various day/night temperature regimes was studied under controlled-environment conditions to predict its potential geographic distribution and to develop an effective control program. Round-leaved mallow dry matter production was greatest with day temperatures of 18 to 26 C. Dry matter accumulation was reduced by a night temperature of 6 C but was minimally affected by night temperatures ranging from 12 to 24 C. Regression analysis predicted minimal vegetative growth at mean daily temperatures below 8 C and above 30 C, with optimum growth at 20 C. Partitioning of round-leaved mallow biomass in leaves, stems, and roots was affected by temperature. Maximum leaf weight ratio occurred at low temperatures, 10 C day and 6 C night. Stem weight ratio was greatest at a day temperature of 26 C, with night temperature having little effect. Maximum root biomass occurred with a day temperature of 18 C. Results are discussed in terms of environmental conditions that allow round-leaved mallow to be an effective competitor with crops and potential approaches for its control.

scholarly journals The effects of diurnal temperature regimes on growth and yield of glasshouse sweet pepper.

1988 ◽  
Vol 36 (3) ◽  
pp. 201-208 ◽  
Author(s):  
J.C. Bakker ◽  
J.A.M. van Uffelen
Keyword(s):  
Vegetative Growth ◽  
Sweet Pepper ◽  
Fruit Weight ◽  
Growth And Yield ◽  
Minor Importance ◽  
Night Temperature ◽  
Mean Temperature ◽  
Temperature Regimes ◽  
Class 1 ◽  
Temperature Amplitude

Growth and yield of Oct.-sown Capsicum annuum, cv. Delphin, were investigated in a greenhouse under 12 day/night temperature regimes (16/15 degrees , 16/21 degrees , 20/12 degrees , 20/15 degrees , 20/18 degrees , 20/21 degrees , 24/12 degrees , 24/15 degrees , 24/18 degrees , 24/21 degrees , 28/15 degrees and 28/21 degrees C) applied during the early post-planting period (early Dec. to mid-Apr.). Fresh weight and leaf number were significantly correlated with 24-h mean temperature, but no significant effect of the day/night temperature amplitude was found. Plant height, leaf area and the leaf-area:length ratio were significantly correlated with 24-h mean temperature and with day/night temperature amplitude. The optimum 24-h mean temperature for vegetative growth was between 21 and 23 degrees . Yields of total and class 1 fruits (kg/msuperscript 2) and numbers of class 1 fruits were greatest at a 24-h mean temperature of 21-21.5 degrees . Raising the 24-h mean air temperature within the range 16.3 to 23.8 degrees significantly reduced the mean fruit weight of class 1 fruits. The day/night temperature amplitude had a significant positive effect on these variables. The effect of the day/night temperature amplitude on vegetative growth and on yield was of minor importance compared with the effect of the 24-h mean temperature. (Abstract retrieved from CAB Abstracts by CABI’s permission)

2,4-Epibrassinolide mechanisms regulating water use efficiency and fruit production in tomato plants

2021 ◽  
Author(s):  
Lucas Baiochi Riboldi ◽  
Rafaella Zanetti Dias ◽  
Paulo Roberto de Camargo e Castro ◽  
Sérgio Tonetto de Freitas
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Fruit Production ◽  
Tomato Plants ◽  
Use Efficiency

Overexpression of LeNHX2 and SlSOS2 increases salt tolerance and fruit production in double transgenic tomato plants

2019 ◽  
Vol 135 ◽  
pp. 77-86 ◽  
Author(s):  
Mourad Baghour ◽  
Francisco Javier Gálvez ◽  
M. Elena Sánchez ◽  
M. Nieves Aranda ◽  
Kees Venema ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Fruit Production ◽  
Transgenic Tomato ◽  
Tomato Plants ◽  
Transgenic Tomato Plants

The effect of temperature stress on grain development in wheat

1965 ◽  
Vol 16 (1) ◽  
pp. 1 ◽  
Author(s):  
RD Asana ◽  
RF Williams
Keyword(s):  
Growth Analysis ◽  
Important Determinant ◽  
Effect Of Temperature ◽  
Synthetic Activity ◽  
Grain Development ◽  
Night Temperature ◽  
Complex Interactions ◽  
Temperature Regimes ◽  
Controlled Environments ◽  
Stable Characteristic

Experiments were conducted in controlled environments to determine the effects of high temperatures on grain development and yield in wheat. Two Australian and three Indian cultivars of wheat were exposed, from a week after anthesis until maturity, to "day" temperatures of 25, 28, and 3l°C, and "night" temperatures of 9 and 12°C. There was a mean reduction in yield of 16%' for the 6° rise in day temperature, but the cultivars did not differ significantly in their response to these temperatures. There were no significant effects of night temperature on grain weight, but stem weight was less at 12°C. Senescence was hastened only slightly by high day temperature, and there were no differential effects between cultivars in this respect.In a subsidiary experiment one Indian and five Australian cultivars were subjected to three day-night temperature regimes (24/19°, 27/22°, and 30/25°C). Highly significant but complex interactions were established between temperature regime and cultivar. A growth analysis for the Australian cultivars Ridley and Diadem indicated that the developing grain of Ridley had a greater capacity for growth than that of Diadem from the earliest stage. This, together with the confirmation of grain size as a very stable characteristic for all the varieties, points to the developmental and synthetic activity of the grain as an important determinant of grain yield. The relevance of this study to the production of wheat in India is briefly discussed.

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