to determine tetraploid pollinators resistant to cercospora leaf spot disease and bolting with optimum yield and quality, five tetraploid pollinators were crossed with a male sterile line, sb17. the hybrid seed was harvested from the male-sterile line. the hybrids together with four controls including resistant and susceptible cultivars (a total of 9 cultivars), were evaluated in a randomized c...

Purpose. To determine the subspecies and variety/sample of garlic with best nutritional value by analy­zing difference between indicators their variation according to time planting (winter or spring). Methods. During 2020–2022, in field conditions (Uman, 48°46’N, 30°14’E) were studied 25 breeding local forms (9 – winter bolting; 9 non- 11 spring, among which samples No. 14, 33, 43 44 determined...

Flowering time, the major regulatory transition of plant sequential development, is modulated by multiple endogenous and environmental factors. By phenotypic profiling of 80 early flowering mutants of Arabidopsis, we examine how mutational reduction of floral repression is associated with changes in phenotypic plasticity and stability. Flowering time measurements in mutants reveal deviations fr...

Purpose. The published studies are aimed at determining the mechanism of deformation rocks contour around workings in terms parameters emerging fracturing and their dependence on indicators strength depth occurrence massif. tasks study include installation fracture indicators, determination development process working, including effect longwall mining taking into account possibility reuse worki...

Standing crib supports have been applied in underground mining programs to resist large roof movements and sustain highloads. The strength and deformation capability of these systems has been documented under both laboratory and field conditions. The parameter that has not been examined and is not well understood is the effect that a crib or other types of standing support has on the primary an...

The sensitivity of the Nicotiana plumbaginifolia wild-type and phytochrome B (hlg) mutant to photoperiod was investigated. Leaf number at bolting and rosette-leaf movement were measured under conditions of different light quality and photoperiod. Bolting in wild-type plants was slightly delayed under short days (SD), compared to plants grown under long days (LD). The hlg mutant bolted later tha...

With the increasing complexity of engineering geological conditions, problem tensile-shear failure bolts is becoming more serious. Accurate modelling performance bolted rough joints subjected to load essential for support design. In this paper, based on theoretical criteria bolt failure, mechanical model Pile element in FLAC3D program modified, and accuracy modified verified by numerical experi...

Abstract Fully grouted rock bolting is commonly used in roadway reinforcement mining and tunnelling reinforcement.

In 1948 roof falls were the number one killer of coal miners in America. While the Bureau of Mines had been formed in 1910 to improve coalmine safety, it had largely focused on explosions, for which technological solutions appeared to exist. Roof falls, by contrast, were not amenable to a technical fix. Beginning in 1948, however, the Bureau discovered roof bolting, which it promoted as a safer...