کنگره بین المللی زیست فناوری گیاهان دارویی و قارچ های کوهی

صفحه اصلی / چهارمین کنگره بین المللی و پنجمین همایش ملی زیست فناوری گیاهان دارویی و قارچ های کوهی

Application of pre-treatment technique in seed preparation for germination under abiotic stress for sustainable agriculture.

نویسندگان :

Seyedeh Azamat Miri¹ Fatemeh Jafari Sayadi²

1- دانشگاه زنجان 2- دانشگاه علوم کشاورزی و منابع طبیعی ساری

کلمات کلیدی :

priming

چکیده :

Environmental stresses, especially salinity and drought stress, cause a decrease agriculture production worldwide more. Salinity damage in plants is through the effect on water absorption, the effect of ion toxicity and disturbance in the absorption of nutrients. Germination is one of the important and essential steps in the life of most plants, and tolerance to salinity is extremely important for the germination, greening and establishment of plants that grow in saline soils. The use of appropriate methods for seed preparation against adverse conditions is considered as a solution to reduce the negative effects of environmental stress on the plant and improve yield. One of the methods that has received special attention today is the seed priming technique. Seed priming is one of the seed pretreatment methods that improves seed performance and leads to faster and uniform germination. The most common priming methods include hydro-priming and osmo-priming. Osmo-priming is a special type of seed preparation before planting, which is done by soaking the seeds in solutions with low osmotic potential containing chemicals. Since medicinal plant in germination is sensitive to salinity and drought, it may not have uniform germination and favorable establishment in agricultural soils of the Iran country due to salinity. This research has been done in a library-review method so that by using different sources, effective solutions can be found in the development of the cultivation of these valuable medicinal plants in the natural and agricultural fields. The results of the research showed that in recent years, many researches have been conducted on the priming of medicinal plant seeds under stress conditions. According to research results, priming is effective in increasing the percentage and uniformity of seed germination and improving seedling growth and seed germination index. It has been reported that the priming method allows early DNA transcription, increases RNA and protein synthetase to seeds and increases embryo growth. Also, by repairing the damaged parts of the seeds, the excretion of metabolites decreases. As a result, priming treatments are effective in both natural and stressful conditions.