Genotypic variation for cold tolerance during reproductive development in rice: Screening with cold air and cold water

2006 ◽  
Vol 98 (2-3) ◽  
pp. 178-194 ◽  
Author(s):  
T.C. Farrell ◽  
K.M. Fox ◽  
R.L. Williams ◽  
S. Fukai
Keyword(s):  
Cold Tolerance ◽  
Cold Water ◽  
Genotypic Variation ◽  
Reproductive Development ◽  
Cold Air

Minimising cold damage during reproductive development among temperate rice genotypes. II. Genotypic variation and flowering traits related to cold tolerance screening

2006 ◽  
Vol 57 (1) ◽  
pp. 89 ◽  
Author(s):  
T. C. Farrell ◽  
K. M. Fox ◽  
R. L. Williams ◽  
S. Fukai ◽  
L. G. Lewin
Keyword(s):  
Low Temperature ◽  
Cold Tolerance ◽  
Field Experiments ◽  
Cold Water ◽  
Genotypic Variation ◽  
Pollen Grains ◽  
Microspore Development ◽  
Spikelet Sterility ◽  
Temperature Conditions ◽  
Anther Length

Low temperature during microspore development increases spikelet sterility and reduces grain yield in rice (Oryza sativa L.). The objectives of this study were to determine genotypic variation in spikelet sterility in the field in response to low temperature and then to examine the use of physio-morphological traits at flowering to screen for cold tolerance. Multiple-sown field experiments were conducted over 4 consecutive years in the rice-growing region of Australia to increase the likelihood of encountering low temperature during microspore development. More than 50 cultivars of various origins were evaluated, with 7 cultivars common to all 4 years. The average minimum temperature for 9 days during microspore development was used as a covariate in the analysis to compare cultivars at a similar temperature. The low-temperature conditions in Year 4 identified cold-tolerant cultivars such as Hayayuki and HSC55 and susceptible cultivars such as Sasanishiki and Doongara. After low temperature conditions, spikelet sterility was negatively correlated with the number of engorged pollen grains, anther length, anther area, anther width, and stigma area. The number of engorged pollen grains and anther length were found to be facultative traits as their relationships with spikelet sterility were identified only after cold water exposure and did not exist under non-stressed conditions.

Genotypic Variation for Cold Tolerance among Twelve Maize (Zea mays L.) Populations

1986 ◽  
Vol 97 (1) ◽  
pp. 2-12 ◽  
Author(s):  
G. L. Pozzi ◽  
E. Gentinetta ◽  
F. Salamini ◽  
M. Motto
Keyword(s):  
Zea Mays ◽  
Cold Tolerance ◽  
Zea Mays L ◽  
Genotypic Variation

scholarly journals Loss of α-actinin-3 during human evolution provides superior cold resilience and muscle heat generation

2020 ◽  
Author(s):  
VL Wyckelsma ◽  
T Venckunas ◽  
PJ Houweling ◽  
M Schlittler ◽  
VM Lauschke ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Cold Tolerance ◽  
Muscle Activation ◽  
Cold Water ◽  
Muscle Protein ◽  
Core Body Temperature ◽  
Water Immersion ◽  
Cold Water Immersion ◽  
Skeletal Muscle Protein ◽  
Brown Adipose

ABSTRACTThe fast skeletal muscle protein α-actinin-3 is absent in 1.5 billion people worldwide due to homozygosity for a nonsense polymorphism in the ACTN3 gene (R577X) 1. The prevalence of the 577X allele increased as modern humans moved to colder climates, suggesting a link between α-actinin-3 deficiency and improved cold tolerance 1,2. Here, we show that humans lacking α-actinin-3 (XX) are superior in maintaining core body temperature during cold-water immersion due to changes in skeletal muscle thermogenesis. Muscles of XX individuals displayed a shift towards more slow-twitch isoforms of myosin heavy chain (MyHC) and sarcoplasmic reticulum (SR) proteins, accompanied by altered neuronal muscle activation resulting in increased tone rather than overt shivering 3,4. Experiments on Actn3 knockout mice showed no alterations in brown adipose tissue (BAT) properties that could explain the improved cold tolerance in XX individuals. Thus, this study provides a clear mechanism for the positive selection of the ACTN3 X-allele in cold climates and supports a key thermogenic role of skeletal muscle during cold exposure in humans.

Genotypic Variation in Rice Cold Tolerance Responses during Reproductive Growth as a Function of Water Temperature during Vegetative Growth

Crop Science ◽  
2011 ◽  
Vol 51 (1) ◽  
pp. 290-297 ◽  
Author(s):  
Hiroyuki Shimono ◽  
Ayako Ishii ◽  
Eiji Kanda ◽  
Mitsuru Suto ◽  
Kuniaki Nagano
Keyword(s):  
Water Temperature ◽  
Cold Tolerance ◽  
Vegetative Growth ◽  
Genotypic Variation ◽  
Reproductive Growth

Responses of Antioxidant System to Long-Term Cold Water Stress in New Rice Line J07-23 with Strong Cold Tolerance

2013 ◽  
Vol 39 (4) ◽  
pp. 753 ◽  
Author(s):  
Guo-Jiao WANG ◽  
Jia-Yu WANG ◽  
Wei MIAO ◽  
Ming-Hui ZHAO ◽  
Wen-Fu CHEN
Keyword(s):  
Water Stress ◽  
Cold Tolerance ◽  
Antioxidant System ◽  
Cold Water ◽  
Rice Line

Effects of chronic cold water exposure in fish harvesters on sensory and motor performance and cold tolerance

2020 ◽  
Vol 7 (4) ◽  
pp. 1
Author(s):  
Heather Carnahan ◽  
Emily Walsh ◽  
Brianna Walsh ◽  
Jillian Holden ◽  
Chantel Armstrong
Keyword(s):  
Cold Tolerance ◽  
Motor Performance ◽  
Cold Water ◽  
Water Exposure

scholarly journals Identification of Quantitative Trait Loci for Spikelet Fertility at the Booting Stage in Rice (Oryza sativa L.) under Different Low-Temperature Conditions

Agronomy ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1225
Author(s):  
Jong-Min Jeong ◽  
Youngjun Mo ◽  
Ung-Jo Hyun ◽  
Ji-Ung Jeung
Keyword(s):  
Quantitative Trait Loci ◽  
Cold Tolerance ◽  
Quantitative Trait ◽  
Cold Water ◽  
Oryza Sativa L ◽  
Growth And Yield ◽  
Chromosome 1 ◽  
Booting Stage ◽  
Trait Loci ◽  
Temperature Controlled

Cold stress in rice is a critical factor limiting growth and yield in temperate regions. In this study, we identified quantitative trait loci (QTL) conferring cold tolerance during the booting stage using a recombinant inbred line population derived from a cross between a cold-susceptible Tongil-type cultivar Milyang23 and a cold-tolerant japonica cultivar Giho. A phenotypic evaluation was performed in a cold-water-irrigated field (17 °C) and a temperature-controlled (17 °C/17 °C air and water) greenhouse at the booting stage. Four QTL, including two on chromosome 1 and one each on chromosomes 6 and 9, were identified in the cold-water-irrigated field, with an R2 range of 6.3%–10.6%. Three QTL, one on each of chromosomes 2, 6 and 9, were identified under the temperature-controlled greenhouse condition, with an R2 range of 5.7%–15.1%. Among these, two QTL pairs on chromosomes 6 (qSFF6 and qSFG6) and 9 (qSFF9 and qSFG9) were detected in the cold treatments of both field and greenhouse screenings. Our results provide a reliable dual-screening strategy for rice cold tolerance at the booting stage.

Finger and Toe Temperatures on Exposure to Cold Water and Cold Air

2008 ◽  
Vol 79 (10) ◽  
pp. 941-946 ◽  
Author(s):  
Norbert R. van der Struijs ◽  
Eline M. van Es ◽  
Roy J. E. M. Raymann ◽  
Hein A.M. Daanen
Keyword(s):  
Cold Water ◽  
Cold Air ◽  
Exposure To Cold
Sign in / Sign up

Export Citation Format

Share Document