جستجوی مقالات مرتبط با کلیدواژه « pea » در نشریات گروه « زیست شناسی »

In order to evaluate the effect of Inoculation by pseudomonas plant growth promotinh rhizobacteria and  foliar application of boron-nanochelate of pea( Pisum sativum L.) mother plants on germination traits and seedling growth of produced seeds under Cadmium stress a factorial experiment based on completely randomized design with four replications was conducted. Experimental treatments were 12 combination of foliar application  of boron-nanochelate (control, 2 and 4  mg/L), inoculation   by plant growth promoting rhizobacteria pseudomonas  strains (without inoculation, p15, p25 and p32) and three levels of cadmium stress (0, 50, 150 mg/l Cdcl2). Through this experiment traits such as seed germination and seedling growth criterias , some of biochemical parameters such as proline,  protein and soluble solid content, photosynthetic pigment content and peroxidase antioxidant enzyme were measured. Results  indicated that as increases in  cadmium  stress  germination percentage and rate seedling length and dry weight, seedling length index, photosynthetic pigments and  soluble solid and protein content of seedlings and peroxidase antioxidant enzyme activity  were decreased, while proline content of seedling were increased. Whearse     Boron nano-chelate nutrition and pseudomonas bacterial strains inoculation alleviated deterimental effects of cadmium stress via increase in seed germination and seedling growth criteria, protein  and soluble solid content, chlorophyll a and chlorophyll b  and peroxidase enzyme activity .

To investigate the amount of nitrogen (N), phosphorous (P) and potassium (K) uptake in crops and weeds in cereals-legumes intercropping, a field experiment was performed in 2014-2015. Treatments included 10 monoculture (wheat, barley, triticale, pea and bean with and without weeds) and 6 intercropping (wheat pea, wheat faba bean, barley pea, barley faba bean, triticale pea and triticale faba bean with weeds) which laid out in a randomized complete block design (RCBD) with three replicates. Our results showed that the highest N content in cereals shoot was obtained in weed-free monoculture wheat (8.1 %) and in legumes shoot was obtained in weedy monoculture pea (17.3 %) and weed-free monoculture pea (15.8 %). There was no significant difference between weedy monoculture and intercropping treatments for N content in weed shoot, according to Duncan test. The highest value of P content in cereals shoot was observed in faba bean숗 intercropping (0.80 %) and weed-free monoculture wheat (0.79 %). The highest amount of P content in legume and weeds was obtained in weed-free monoculture pea (1.90 %) and weedy monoculture pea (0.13 %). The highest amount of K content in cereals, legumes and weed shoot was obtained in barley-pea intercropping (1.95 %), triticale-pea (1.59 %) and barley-pea (1.90 %), respectively. Thus, intercropping can reduce nutrients availability for weeds and it can cause an increase in nutrients for crops.