Showing 3 results for Baninasab
A. Rezaee, M. Mobli, N. Etemadi, B. Baninasab, A. H. Khoshgoftarmanesh,
Volume 4, Issue 1 (Journal of Science and Technology of Greenhouse Culture 2013)
Abstract
One of the main factors of an aggregate hydroponic system is to use a suitable plant media with local origin. Thus the objective of this research was to study the possibility of replacement of cocopeat as an imported material with local materials and the effects of such media on the growth and flowering characteristics of Rosa hybrida cv. Maroussia. A randomized complete blocks design experiment with four replications was conducted. The treatments were nine growing media: cocopeat (100%), perlite (100%), leca (100%), cocopeat (75%) + zeolite (25%), perlite (75%) + zeolite (25%), leca (75%) + zeolite (25%), cocopeat (50%) + perlite (50%), cocopeat (50%) + leca (50%) and perlite (50%) + leca (50%). Results indicated that plants grown in cocopeat and cocopeat + zeolite showed high vegetative and reproductive growth. The highest number of flowers per plant was observed in in cocopeat (8.31) and cocopeat + perlite (7.81) substrates, which had no significant difference with cocopeat + zeolite medium (6.87). Adding zeolite to cocopeat, perlite and leca improved length of flower bud and number of flowers per plant over their pure medium. Also, adding cocopeat to perlite increased fresh and dry weight of cut flowers and number of flowers per plant. Based on the results and availability of zeolite in Iran, mixture of cocopeat (75%) + zeolite (25%) is recommended.
B Baninasab, S Mohammadi, A.h Khoshgoftarmanesh, A Ghasemi,
Volume 5, Issue 4 (Journal of Science and Technology of Greenhouse Culture 2015)
Abstract
Iron (Fe) chlorosis is an important nutritional problem in quince trees. But, quince rootstocks differ in their tolerance to Fe deficiency in calcareous soils. Tolerance to Fe deficiency of seedling rootstocks of quince, pear and crataegus and clonal rootstock of quince A was evaluated by exposure to two levels of Fe (3 and 50 µM) in the presence or absence of 10 mM bicarbonate in soilless culture. According to results of this study different rootstocks had various responses to Fe deficiency stress. In Fe-deficiency stress conditions, rootstocks of pear and crataegus showed the lowest severity of chlorosis among the studied rootstocks and had the highest plant height, number of leaves and Fe concentration in leaves and roots. Activity of guaiacol peroxidase enzyme in these two Fe-tolerant rootstocks was less affected by Fe deficiency. In contrast, seedling rootstock of quince showed the highest severity of chlorosis along with the decrease in activity of guaiacol peroxidase (-74.19%) and ascorbate peroxidase (-52.35%). Quince A rootstock showed better performance than seedling rootstock of quince under Fe deficiency. Results also revealed that despite sufficient Fe level in the media (50 µM), seedling rootstocks exposed to bicarbonate showed Fe deficiency symptoms. In general, it was found out that rootstocks of pear and crataegus were more tolerance to Fe deficiency stress
L. Cheheltanan, B. Baninasab, M. Gholami,
Volume 13, Issue 1 (Journal of Soil and Plant Interactions 2022)
Abstract
Salinity is one of the most important abiotic stresses that severely affect the yield and quality of plants. The use of hydrogen sulfide in low concentrations increases tolerance to various stresses, including salinity in plants. This study aimed to investigate the effect of hydrogen sulfide (H2S) on reducing the damage to almond rootstock under salinity stress. The experiment was performed as a factorial based on a completely randomized design with four replications. The treatments included four levels of salinity (0, 30, 60 and 90 mM NaCl) and four concentrations of H2S (0, 0.05, 0.10 and 0.15 mM). Results showed that salinity stress, especially at a concentration of 90 mM NaCl caused a significant decrease in stem height, relative chlorophyll and leaf relative water content and a significant increase in injury rating value, electrolyte leakage, proline and sodium concentrations of root and shoot, activities of catalase and peroxidase of leaf. However, H2S at concentrations of 0.10 and 0.15 mM improved plant growth with a decrease in electrolyte leakage and sodium concentration of root, and a significant increase in proline, relative chlorophyll and antioxidant enzyme activity ameliorated the negative effect of salinity stress and improved plant growth.
