TY - JOUR ID - 66196 TI - Effects of nano and nano bio-fertilizer on physiological, biochemical characteristics and yield of roselle under drought stress JO - Journal of Crops Improvement JA - JCI LA - en SN - 2008-8337 AU - Hashemi Fadaki, Seyedeh Esmat AU - Fakheri, Barat Ali AU - Mehdi Nezhad, Nafiseh AU - Mohammad Pour, Roqia AD - Y1 - 2018 PY - 2018 VL - 20 IS - 1 SP - 45 EP - 66 KW - Nano-iron KW - osmolyte KW - photosynthetic pigments KW - sepals weight KW - water deficit stress DO - 10.22059/jci.2018.219078.1568 N2 - The replacement of chemical inputs with ecological compatible inputs seems necessary for a step towards in transition from common to sustainable agriculture. In this regard, an experiment was conducted at the research field, University of Zabol, as a split plot based on randomized complete block design with three replications, during 2015. Four drought stress levels of 30, 50, 70 and 90 percent of available water were considered as main plots and four levels of nano and nano bio-fertilizers were considered as sub plots. Main effects of fertilizer, drought stress and their interaction were significant for all studied traits. Maximum of photosynthetic pigments, fresh and dry weight of sepals were obtained under treatment of 70% of available water irrigation and foliar application of nano-iron fertilizer. The highest amount of anthocyanin, proline and carbohydrate osmolytes belonged to 30% of available water irrigation and the highest relative water content of leaves belonged to 90% of available water irrigation and foliar application of nano-iron fertilizer. The result of principal component analysis showed that the best-studied treatment was 70% of available water irrigation including with foliar application of nano-iron fertilizer. Spraying nano-iron fertilizer mitigated the effects of drought stress and increased the quantity and quality of roselle sepals. UR - https://jci.ut.ac.ir/article_66196.html L1 - https://jci.ut.ac.ir/article_66196_03bf60b22801d140142d63c101d45c2d.pdf ER -