RECIPROCAL CROSS ANALYSIS OF GROWTH COMPONENT STAGES IN TOMATOES UNDER TWO TEMPERATURE REGIMES

1980 ◽  
Vol 60 (1) ◽  
pp. 163-166
Author(s):  
THOMAS SHIN-CHAI LI ◽  
C. A. HORNBY
Keyword(s):  
Reciprocal Cross ◽  
Reciprocal Hybrids ◽  
Temperature Conditions ◽  
Cytoplasmic Effects ◽  
Temperature Regimes ◽  
Cross Experiment ◽  
Selection For ◽  
Two Temperature

The nuclear and cytoplasmic effects on seven growth component stages in tomatoes were studied in a reciprocal cross experiment involving two parental cultivars, Bonny Best and Immur Prior Beta, and their reciprocal hybrids. These were grown under the two temperature regimes in greenhouses, 17 °C–21 °C and 10 °C–13 °C respectively. There was evidence that cytoplasmic effects were relatively important for some of the characteristics under stress temperature condition. It is suggested that the cytoplasmic effects and genic-cytoplasm interactions should be considered during selection for tomatoes under subnormal temperature conditions.

RECIPROCAL CROSSES ANALYSIS OF THREE PHYSIOLOGICAL CHARACTERS IN TOMATOES UNDER TWO TEMPERATURE REGIMES

1980 ◽  
Vol 60 (4) ◽  
pp. 1289-1293
Author(s):  
THOMAS SHIN-CHAI LI ◽  
C. A. HORNBY
Keyword(s):  
Net Photosynthesis ◽  
Reciprocal Hybrids ◽  
Cytoplasmic Effects ◽  
Net Photosynthesis Rate ◽  
Temperature Regimes ◽  
Nuclear Composition ◽  
Cross Experiment ◽  
Net Assimilation ◽  
Two Temperature ◽  
Physiological Characters

The nuclear and cytoplasmic effects in the net photosynthesis rate, leaf area and net assimilation rate in tomatos were studied in a reciprocal cross experiment involving two parental cultivars, Bonny Best and Immur Prior Beta, and their reciprocal hybrids. Plants were grown under two temperature regimes in growth chambers, 23 ± 1 °C and 12 ± 1 °C, respectively. It was concluded that nuclear composition affected all three characters. Although the cytoplasmic effect sometimes revealed its influence, it was not large enough to warrent consideration in breeding studies.

Wheat plant selection for high yields entailed improvement of leaf anatomical and biochemical traits including tolerance to non-optimal temperature conditions

2018 ◽  
Vol 136 (2) ◽  
pp. 245-255 ◽  
Author(s):  
Marian Brestic ◽  
Marek Zivcak ◽  
Pavol Hauptvogel ◽  
Svetlana Misheva ◽  
Konstantina Kocheva ◽  
...  
Keyword(s):  
Wheat Plant ◽  
Optimal Temperature ◽  
Plant Selection ◽  
Biochemical Traits ◽  
Temperature Conditions ◽  
Selection For ◽  
High Yields

Inter- and intra-varietal variation in aerobic methane emissions from environmentally stressed pea plants

Botany ◽  
2018 ◽  
Vol 96 (12) ◽  
pp. 837-850 ◽  
Author(s):  
Awatif M. Abdulmajeed ◽  
Mohammad I. Abo Gamar ◽  
Mirwais M. Qaderi
Keyword(s):  
Stress Factors ◽  
Interactive Effects ◽  
Controlled Environment ◽  
Uvb Radiation ◽  
Pisum Sativum L ◽  
Temperature Regimes ◽  
Varietal Variation ◽  
Growth Chambers ◽  
Effects Of Temperature ◽  
Two Temperature

Environmental stress factors can influence methane (CH4) emissions from plants. There are a few studies on the interactive effects of stress factors on plant aerobic CH4, but none on the comparative evaluation of CH4 emissions between and among plant varieties. We examined the effects of temperature, UVB radiation, and watering regime on CH4 emissions from 10 pea (Pisum sativum L.) varieties first and then selected two varieties with the highest (237J Sundance; var. 1) and lowest (422 Ho Lan Dow; var. 2) emissions for further studies. Plants were grown in controlled-environment growth chambers under two temperature regimes (22 °C / 18 °C and 28 °C / 24 °C, 16 h light / 8 h dark), two UVB levels (0 and 5 kJ·m−2·d−1), and two watering regimes (well-watered and water-stressed) for 14 days, after one week of growth under 22 °C / 18 °C. Higher temperatures and water stress increased CH4 emissions, and increased emission was associated with stress. Pea varieties varied in growth and CH4 emissions; var. 1 was more stressed and had higher emission than var. 2. In the stressed variety, the water-stressed plants grown under higher temperatures at UVB5 had the highest CH4 emission, whereas the well-watered plants grown under lower temperatures at UVB5 had the lowest emission. We conclude that climatic stress conditions increase CH4 emissions, which vary with plant varieties.

scholarly journals Proteomic Signatures of Corals from Thermodynamic Reefs

2020 ◽  
Vol 8 (8) ◽  
pp. 1171
Author(s):  
Anderson B. Mayfield
Keyword(s):  
Molecular Mechanisms ◽  
Elevated Temperatures ◽  
Variable Temperature ◽  
Deep South ◽  
Lipid Trafficking ◽  
Reef Corals ◽  
Temperature Conditions ◽  
Temperature Regimes ◽  
Unique Nature ◽  
Seriatopora Hystrix

Unlike most parts of the world, coral reefs of Taiwan’s deep south have generally been spared from climate change-induced degradation. This has been linked to the oceanographically unique nature of Nanwan Bay, where intense upwelling occurs. Specifically, large-amplitude internal waves cause shifts in temperature of 6–9 °C over the course of several hours, and the resident corals not only thrive under such conditions, but they have also been shown to withstand multi-month laboratory incubations at experimentally elevated temperatures. To gain insight into the sub-cellular basis of acclimation to upwelling, proteins isolated from reef corals (Seriatopora hystrix) featured in laboratory-based reciprocal transplant studies in which corals from upwelling and non-upwelling control reefs (<20 km away) were exposed to stable or variable temperature regimes were analyzed via label-based proteomics (iTRAQ). Corals exposed to their “native” temperature conditions for seven days (1) demonstrated highest growth rates and (2) were most distinct from one another with respect to their protein signatures. The latter observation was driven by the fact that two Symbiodiniaceae lipid trafficking proteins, sec1a and sec34, were marginally up-regulated in corals exposed to their native temperature conditions. Alongside the marked degree of proteomic “site fidelity” documented, this dataset sheds light on the molecular mechanisms underlying acclimatization to thermodynamically extreme conditions in situ.

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