geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effects of photoperiod temperature and vernalization on flowering and growth in high latitude populations of red clover


, : Effects of photoperiod temperature and vernalization on flowering and growth in high latitude populations of red clover. Norwegian Journal of Agricultural Sciences 3(2): 201-210

Seedlings were grown for two to five months at 8-h and 24-h photoperiods and at three or five temperature levels of between 9.degree. C and 24.degree. C. Both shoot and root growth are on average from two to four times greater at 24-h, and the effect is most pronounced at low temperatures. Ecotypes from 71 and 65.degree. N are more stimulated by the longer photoperiod than the ecotype from 61.degree. N. Low temperature is favourable for dry matter production because of the low rate of phenological development and thereby increases stem and leaf formation. Only plants grown at long-day periods flower. The highest proportion of flowering plants is found at low temperatures, and in the southernmost ecotype. An increase in temperature from 9.degree. C to 24.degree. C accelerates flowering considerably. Vernalization enhancement of plant growth and development in one of the two experiments, has ultimately been considered as spurious.

US$29.90


Other references

Voelker, R., 2005: The business of baby pictures: controversy brews over "keepsake" fetal ultrasounds. JAMA 293(1): 25-27

Tenstad, O.; Williamson, H.E., 1995: Effect of furosemide on local and zonal glomerular filtration rate in the rat kidney. Furosemide has been reported to produce disproportional changes in blood flow in cortical zones and to inhibit tubuloglomerular feedback (TGF), suggesting that furosemide might alter the intracortical distribution of glomerular filtrate. We have t...

Aksakal, E.; Tanboga, I.Halil.; Kurt, M., 2013: Predictors of coronary lesions complexity in patients with stable coronary artery disease. Only a few studies focused on the predictors of the SYNTAX score (SS). We evaluated the independent clinical predictors of SS in 436 consecutive patients with stable angina pectoris who underwent coronary angiography. Estimated glomerular filtrati...

Castillo, P.; Defilippi, B.; Retamales, J., 1999: Endogenous ethylene measurements in relation to maturation and softening in kiwifruit. Fruits were harvested from 4 kiwifruit orchards in 2 locations (2 at Rancagua and 2 at San Fernando, Chile). Orchards were selected based on previous information regarding different propensities to fruit softening. Fruit ethylene production rates...

Webster, A.R.; Va.A.Be.N.J., 1955: A test for the mechanical strength of compressed tablets. Journal of Pharmacy and Pharmacology 7(11): 882-891

Togashi, H.; Shinzawa, H.; Matsuo, T.; Takeda, Y.; Wakabayashi, H.; Murayama, H.; Takahashi, T., 2000: High content of lipid hydroperoxides in livers from patients with chronic hepatitis C. Hepatic lipid hydroperoxides, which are produced when reactive oxygen intermediates react with polyunsaturated lipids, were measured in patients with chronic hepatitis C. Eight patients with chronic persistent hepatitis (chronic persistent hepatit...

Miyake Y.; Saruhashi K., 1974: The radio carbon model of the ocean. Journal of Radiation Research 15(1): 44

Salkowski L.R.; Hager S.R., 1988: Estrogen as it effects enzymes involved with insulin stimulated glucose uptake by muscle cells. Clinical Research 36(6): 924A

Imamura, T.; Matsuo, T.; Yanase, T.; Kagiyama, S., 1984: Hereditary spherocytosis associated with a variant of band 3 protein in the erythrocyte membrane. A 17-year-old woman with hereditary spherocytosis was found to be heterozygous for an unusual variant of the band 3 protein in erythrocyte membranes. The variant had a molecular weight of 95,000 daltons which was larger by about 3,000 daltons than...

Das, S.; Palmer, J.K.ith, 1994: Laparoscopic colposuspension using bone anchors. Journal of Endourology 8(SUPPL 1): S63