Freshly harvested seed of #1339-1-5, a selection miiade by the late C. H. MYERS, from Wisconsin Hollander, and various strains of Glory cabbage exhibit a pronounced dormancy and uneven germination, thus extending the breeding cycle from 1 to 2 years. This type of dormancy gradually disappears during several weeks of air-dry storage at room temperature, but by this time it is too late for field ...

Seed dormancy is an adaptive mechanism and an important agronomic trait. Temperature during seed development strongly affects seed dormancy in wheat (Triticum aestivum) with lower temperatures producing higher levels of seed dormancy. To identify genes important for seed dormancy, we used a wheat microarray to analyze gene expression in embryos from mature seeds grown at lower and higher temper...

Compost stability and maturity are important parameters of compost quality. To date, nearly all compost characterization has been performed using samples freshly collected because sample storage can affect compost stability and maturity evaluation. However, sample preservation is sometimes necessary, especially for scientific research purposes. There is little information available on the effec...

Studies on the effectiveness of various sterilants and culture conditions on in-vitro seed germination in tomato (Solanum lycopersicum L.) cv. PKM-1 revealed that among three sterilants used, surface sterilization of seeds with 5 % NaOCl for 20 minutes was found to be more effective resulting in high germination rate and contamination free cultures. Similarly among the different media and cultu...

Germination is a key process in plants' phenological cycles. Accelerating this process could lead to improvment of the seedling growth as well as the cultivation efficiency. To achieve this, the effect of microwave frequency on the germination of rice seeds was examined. The physiological feedbacks of the MR 219 rice variety in terms of seed germination rate (GR), germination percentage (GP), a...

After 120 yr of burial in moist, well-aerated sand, 23 seeds of Verbascum blattaria and two seeds of a Verbascum sp. germinated and produced normal plants (50% germination for Verbascum). After a 6-wk cold treatment, a single seed of Malva rotundifolia germinated also, producing a normal plant (2% germination). Plants were grown to maturity in a greenhouse, and flowering was induced by exposure...

A major contributor to degradation on rangelands in the western United States is the expansion of undesirable annual weeds following wildfire or other disturbance. The Simultaneous Heat and Water (SHAW) model was applied to three soil types (loamy sand, sandy loam, and silt loam) to simulate near-surface soil temperature and water for predicting potential seed germination in post-wildfire reveg...

The success of the rice harvest is influenced by various factors, one which selection quality seeds. Good seeds are those obtained during physiological maturity where moisture content in not too low/high. cooking time can be done calculating heat accumulation and testing germination. Heat total energy from solar radiation received plants, this value calculated recording maximum, minimum, humidi...