We have taken a genetic approach to understanding the mechanisms that control vascular patterning in the leaves of higher plants. Here we present the identification and characterization of the lop1 mutant of Arabidopsis which is defective in basipetal transport of IAA. Mutant leaf midveins show disoriented axial growth, and bifurcation into twin veins that are frequently rotated out of the norm...

Geophysical and geochemical anomalies may have a mutagenic effect on plants growing in active fault zones being the factors of evolutionary transformation of plant populations. To test this assumption we evaluated the mutation activity of a Lonicera caerulea natural population in one of the active fault zones in the Altai Mountains. We derived principal cytogenetic indices (i.e., mitotic, proph...

The study investigated the efficacy of two isolates of Aspergillus terreus (65P and 9F) on the growth, morphology and pathogenicity of Pythium aphanidermatum on cucumber. In vitro tests showed that the two isolates inhibited the growth of P. aphanidermatum in culture. Investigating P. aphanidermatum hyphae close to the inhibition zone showed that the hyphae showed abnormal growth and loss of in...

soil and water salinity in arid and semi-arid regions, is one of the most important stresses, can severely limit crop production. black cumin (nigella sativa l.) is annual important herbal plant in rununculaceae family that sense to salinity. this study was conducted to evaluate the effects of the priming on seed germination of black cumin under saline stress. the experiment was carried out as ...

When the polyamine content of soybean (Glycine max) seeds was examined during the early stages of germination, the major polyamine in the cotyledons was found to be spermidine, followed by spermine; while very low concentrations of cadaverine were found. In the embryonic axes, however, cadaverine was the main polyamine and its content markedly increased 24 hours after the start of germination. ...

Seed quality is crucial for achieving the desired number of plants in mixture, as well ratio grass-legume components. Seeds red clover and Italian ryegrass can be placed on market with germination 70 % more. In this experiment, seeds six varieties four lily were examined. up to years age tested. was examined by monitoring following parameters: energy, amount hard-dormant seed, total abnormal se...

Fagopyrum esculentum Moench (buckwheat) is a dicot species from the Polygonaceae family used as cover crop in agricultural systems featured with remarkable allelopathic potential for weed control, helping herbicide-resistance management and promoting substantial reductions herbicide applications. The aim of this research was to examine aqueous extracts seeds aerial part buckwheat on seed germin...

It is important to propose the correct decision for culling and replenishing seedlings in factory seedling nurseries improve quality of save resources. To solve problems inefficiency subjectivity existing traditional manual replenishment seeds, this paper proposes an automatic method discriminate early growth condition seedlings. Taking watermelon plug as example, Azure Kinect was used collect ...