Results 271 to 280 of about 4,109,895 (326)

Flowers that self‐shade reduce heat stress and pollen limitation

American Journal of Botany, 2023
AbstractPremisePlants are facing increased risk of heat stress with global climate change. Reproductive tissues are particularly heat‐sensitive, which can result in lower plant fitness. Floral shading and closure are possible mechanisms to limit heat stress although most previous work on petal orientation has considered adaptations to raise ...
Richard Karban, Danielle Rutkowski, Naomi A. Murray   +2 more
openaire   +2 more sources

Indicators of Heat Stress in Shaded and Non-Shaded Feedlot Cattle

2004, Ottawa, Canada August 1 - 4, 2004, 2004
Heat stress in feedlot cattle can cause decreases in feed intake and growth, and in extreme cases may result in death. Providing shade during hot weather has shown inconsistent results, reducing direct and indirect losses in some areas of the United States, but not in others.
null T.M. Brown-Brandl, null R.A. Eigenberg, null J.A. Nienaber, null G.L. Hahn   +3 more
openaire   +1 more source

Shade Avoidance Influences Stress Tolerance in Maize

Weed Science, 2011
Previous studies have suggested that the reduction in the root/shoot ratio that accompanies the shade avoidance response may reduce the tolerance of individuals to subsequent nutrient or moisture limitations. In this work, we examined the impact of the shade avoidance response on maize seedling growth and development and the response of these plants to
Eric R. Page, Weidong Liu, Diego Cerrudo, Elizabeth A. Lee, Clarence J. Swanton   +4 more
openaire   +1 more source

Characterizing stress in shaded and unshaded feedlot heifers

2012 Dallas, Texas, July 29 - August 1, 2012, 2012
Extreme summertime conditions can have negative impacts on growth, performance, and can cause death in vulnerable animals. A study was conducted over a three-year period to evaluate the characteristics that contribute to heat stress. Three hundred eighty four feedlot heifers of four distinct breeds/composites were selected based on their coat color and
null T M Brown-Brandl, null D D Jones
openaire   +1 more source

Shades of Dry — Curing Urinary Stress Incontinence

New England Journal of Medicine, 2007
Urinary incontinence is a common condition affecting 20 to 40% of older women.1 The two most common types of urinary incontinence are stress incontinence, the involuntary loss of urine resulting from increased abdominal pressures (such as with a cough or Valsalva's maneuver), and urge incontinence, the involuntary loss of urine after an unwanted ...
openaire   +2 more sources

Still-shade-temperature meter for use in assessing personnel cold stress

Medical & Biological Engineering & Computing, 1980
A battery-operated meter to indicate the Burton still-shade temperature is described. It combines into one reading the effects on human heat loss of air temperature, wind and radiant exchange. A transistor and two diodes sense these parameters, producing voltages which are summed with appropriate weights by an operational amplifier to cause ...
L, MacHattie, L, Kuehn
openaire   +2 more sources

Quantitative proteomic analyses identified multiple sugar metabolic proteins in soybean under shade stress

Journal of Biochemistry (Tokyo), 2018
Soybean-based intercropping is important for sustainable agricultural practice on a regional and global scale. However, most soybean varieties use shade avoidance strategy to acquire more light absorption when suffered in canopy shade in intercropping ...
Yan Li, Hengke Jiang, Xin Sun, A. Muhammad, Jiang Liu, Weiguo Liu, K. Shu, J. Shang, Feng Yang, Xiaoling Wu, T. Yong, Xiaochun Wang, Liang Yu, Chunyan Liu, Wenyu Yang, Junbo Du   +15 more
semanticscholar   +1 more source

Variation in flower abscission of peppers under stress shading conditions

Euphytica, 1994
Seedlings from 77 accessions including inbreds, F1 hybrids and seven F2 populations were exposed to approximately 60% shading for 35 days following transplanting into the field.
Chen Shifriss, Meir Pilowsky, Benyamin Aloni   +2 more
openaire   +1 more source

Effects of Shade Stress on Growth and Responsive Mechanisms of Bermudagrass (Cynodon dactylon L.)

Journal of Plant Growth Regulation, 2023
Maryam Noor, Jinrui Fan, Jingxue Zhang, Chuan-Jie Zhang, Shengnan Sun, Lu Gan, Xue-Bing Yan   +6 more
semanticscholar   +1 more source

Computing Transpiration of Sunlit and Shaded Cotton Foliage under Variable Water Stress

Agronomy Journal, 1992
AbstractThe accurate calculation of transpiration from plant canopies is critical in order to judiciously manage limited water resources in many agricultural areas. The objective of this study was to compute transpiration from the sunlit and shaded fractions of a cotton (Gossypium hirsutum, cv, Acala SJ2) canopy using the Penman‐Monteith energy balance
Petersen, K.L., Fuchs, Marc, Moreshet, S., Cohen, Y., Sinoquet, Herve   +4 more
openaire   +2 more sources