جستجوی مقالات مرتبط با کلیدواژه "seed coat" در نشریات گروه "منابع طبیعی"

This experiment was conducted in order to investigate the effect of seed coating with biochar and activated carbon on some quinoa seed germination indicators, and it was implemented as a factorial in the form of a completely randomized design with four replications in 2019, in Yasouj University's Faculty of Agriculture. The first factor is seed coating in four levels (no coating, coating with activated carbon, coating with biochar and coating with activated carbon + biochar) and the second factor includes salinity stress in four levels (zero, 75, 150 and 225 mM sodium chloride). The results of the interaction of salinity stress and seed coating showed that the highest content of soluble sugar (28.578 mg/g seed FW) and malondialdehyde (2.97 µmol/g seed FW) was obtained by coating with activated carbon in 150 mM salinity stress. Also, the highest amount of seed hydrogen peroxide (0.18 μmol/g seed FW) and proline (10.49 μmol/g seed FW) at the level of 225 mM sodium chloride was obtained by covering the seeds with biochar and active carbon, respectively. Covering seeds with activated carbon and biochar led to an increase in the length of root and shoot under salt stress conditions. However, under salinity stress conditions, root weight and length vigor index of seed improved more by coating seeds with activated carbon. It can be stated that seed coating can greatly reduce the harmful effects of osmotic stress on germination and biochemical traits in quinoa seedlings and improve seedling growth.

The use of various types of polymers in the field of seed processing (coating seeds of various types of plants) has become very important in recent years. Polymer materials are used to add a mixture of fungicides and pesticides and growth regulators to help protect plant seedlings from growing and deploying better against pathogens and harmful insects in the early stages of plant growth. This research was carried out with the aim of making internal polymer and its feasibility study in seed of three sugar beet, corn and alfalfa crops during the years of 2014-2015. In order to compare the effect of foreign and internal polymer, seed quality, germination, abnormality percentage, Radicle length in laboratory and Seed vigor in greenhouse were evaluated. The results of the obtained spectra and surface tension the comparison of the polymer prepared with the foreign polymer used as a control. It can be concluded that the internalized polymer is physically and mechanically similar to that of an external polymer. Application of polymer in sugar beet cover had no adverse effect on germination and seed establishment. The results of this study showed that the synthesized internal polymer in this study can be used to coating the seeds of sugar beet and alfalfa and 1% and 1.5% for corn seeds in order to achieve optimum seed coating and not to have an adverse effect on their qualitative traits.

The present study was designed to evaluate the effect of seed coating on Monogerm beet seed viability and development by using four different polymers in 2013in Research Institute for Improvement of Sugar Beet Seed. The experiment was conducted on the basis ofa completely randomized design with four replications. Monopolymer (MP), Copolymer (CP), Homopolymer hard (HPS) and soft Homopolymer (HPS), each at a concentration of, 1, 5, and 10 % with control (uncoated) were compared. The recorded traits included germination immediately after coverage, after one month of coverage, growth power after three months of coverage, fresh weight, dry weight, number of buds, shoot length, root length, and growth power of seed in the field. The results showed that there were significant differences among treatments in terms of all traits. According to the results, both soft and hard Homopolymer hay were relatively superior in terms of most recorded traits. However, with respect to percent germination percentage in the field which is of great importance, Monopolymer 10% with Homopolymer hard and soft at low concentrations (to 5%) exhibited a good performance.