جستجوی مقالات مرتبط با کلیدواژه « vegetative growth » در نشریات گروه « بیوتکنولوژی و ژنتیک گیاهی »

In order to investigate the effect of drought stress on vegetative growth and physiological characteristics of Damask rose, a factorial potted experiment was conducted in a randomized complete block design with three replicates. Treatments include three levels of Nanozeolite and four Irrigation intervals, which were performed in a roofed space with sufficient light. After determining the field capacity and soil wilting point, the reference weight was determined in terms of field capacity, and drought treatments were applied based on soil moisture. Various morphological factors, including diameter growth, seedling height, leaf number, leaf area, and aerial and terrestrial biomass were determined after applying stress. The results indicated that the highest total plant weight and shoot dry weight were obtained in 10g Nanozeolite treatment and irrigation interval  four days. The interaction effect of Nanozeolite and irrigation intervals on fresh and dry leaf weight was significant and reached its maximum in 10g Nanozeolite and irrigation interval four days treatments. Nanozeolite affected the number, length, volume, and dry weight of Damask rose root significantly, and consumption of 10g of Nanozeolite improved these traits. Irrigation intervals significantly affected all measured traits except shoot dry weight, the number of roots, plant height, and leaf relative water content. In general, it can be concluded that the use of Nanozeolite in low concentrations has improved growth indices and the application beyond the desired limit for the drought-tolerant Damask rose plant has adverse effects.

Apple is the most important horticultural crops; each year is allocated to the high proportion of commerce of agricultural products. But don’t have a good quality of apples produced in Iran. This study aimed to evaluate the effects of klebron and calcium chloride on some vegetative traits and mineral elements of Red , Golden delicious and Fuji apple that grafted on MM106 in factorial randomized completely block design with 3 replications. Leaf chlorophyll content, leaf area surface, tree height, shoot, trunk length, diameter and nutrient content were determined.The results indicate that the highest effects of treatments on shoots length, diameter, trunk diameter, trunk height, N, K, Zn, leaf chlorophyll content, leaf area surface on Fuji apple and the lowest ones on Golden delicious apple.

In order to study the effects of different levels of nitrogen fertilizer on vegetative and reproductive
yield of marigold, an experiment was conducted as a randomized complete block design with three replications at the Medicinal Plants Research Station of Semnan. Treatments consisted of four levels of ammonium nitrate fertilizer including 0 (control), 100, 200 and 400 kg.ha-1 that were applied in three stages of plant growth. Measured traits included dry and fresh weight of aerial parts, dry and fresh weight of stem, dry and fresh weight of leaf, plant height, coverage crown diameter, flower diameter and dry and fresh weight of flower. Based on the results, the effects of ammonium nitrate fertilizer was significant on all the studied traits, except plant height and dry wight of aerial parts.
Fertilizer application increased vegetative and reproductive traits of marigold. Maximum flower dry weight was obtained by applying 400 kg.ha-1 ammonium nitrate fertilizer. Because flowers of marigold is econnomic part of this plant, application of 400 kg.ha-1 ammonium nitrate fertilizer was recommended in order to obtain maximum dry weight of marigold flower