musa Ebrahimpour; Pourang Kasraie; Hamidreza Larijani; Hamidreza Tohidi moghadam; Sahar Honarmand Jahromi
Abstract
Objective: The purpose of this experiment was to investigate the effect of foliar spraying of bacterial herbicides and aqueous extracts of plants on the morphological characteristics and starch of barnyard grass weed and rice.Methods: This experiment was conducted as split factorial based on a randomized ...
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Objective: The purpose of this experiment was to investigate the effect of foliar spraying of bacterial herbicides and aqueous extracts of plants on the morphological characteristics and starch of barnyard grass weed and rice.Methods: This experiment was conducted as split factorial based on a randomized complete block design cityAmol with three replications in the two cropping years of 2018 and 2019. Factors included the foliar application of aqueous extracts plants and surfactant of sorghum, broccoli, nettle, eucalyptus, elder-berry, Streptomyces sp-albos containing thaxtomin, Xanthomonas campestris bacteria and control as the main factor, the concentration of the extract was zero, 5, 10 and 15 per thousand as a subfactor and the plant species of rice were Tarom cultivar and barnyard grass weed as a sub-sub factor.Results: By extracts foliar application, barnyard grass seed yield and biological yield decreased and the seed starch percent increased. Rice seed yield in the use of 5 per thousand broccoli extract and 5 per thousand Streptomyces sp-albos was not significantly different from the control. By increasing the concentration of the extract, seed yield and biological yield of rice and barnyard grass showed a further decrease. The lowest seed yield in rice at 3.16 tons/ha was related to elder-berry extract and in barnyard grass 0.68 and 0.61 tons/ha was related to nettle and elder-berry extract.Conclusion: According to the obtained results, Allelopathy and plant pathogens can be one of the basic ways to control weeds in a sustainable agricultural system.
Shirin Dianati; Mohsen Kafi; Masoud Mirmasoumi; Valiollah Mozaffarian; Ali Reza Salami
Abstract
Five different media with two concentrations and kinds of carbohydrates and peptone treatments were examined for their effectiveness in promoting asymbiotic seed germination of Epipactis veratrifolia. Results revealed significant differences between media on seed germination percentage and protocorm ...
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Five different media with two concentrations and kinds of carbohydrates and peptone treatments were examined for their effectiveness in promoting asymbiotic seed germination of Epipactis veratrifolia. Results revealed significant differences between media on seed germination percentage and protocorm growth and Fast medium has the best effect on both. Carbohydrate treatments had significant effect on seed germination percentage but not on protocorm growth. Modified Fast medium with 5gr l-1 fructose and 12 gr l-1 sucrose and 2 gr l-1 peptone (MFH2P2) was the best medium for seed germination (49.6%) and Modified Fast medium with 30 gr l-1 sucrose and 2 gr l-1 peptone (MFH1P2) was the best medium for protocorm growth (17.3 mm). Media, carbohydrate and peptone influence seed germination percentage, while media and peptone alone influence protocorm growth. In addition, use of in vitro culture significantly reduced relatively long period of time which is necessary for seed germination and protocorm plantlets growth in natural conditions (approximately 2 years).
Kerametollah Saeidi; Fatemeh Sefidkon; Alireza Babaei
Abstract
In this investigation some chemical and morphological properties of dog rose fruit in 10 regions of north Iran were measured. Results showed significant difference between traits in studied regions. Beta-carotene ranged between 0.05 – 0.323 (mg/g FW). Total soluble carbohydrate varied from 5.9 ...
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In this investigation some chemical and morphological properties of dog rose fruit in 10 regions of north Iran were measured. Results showed significant difference between traits in studied regions. Beta-carotene ranged between 0.05 – 0.323 (mg/g FW). Total soluble carbohydrate varied from 5.9 – 23.3%. The highest content of total anthocyanin 23.7 and the lowest was 7.71(mg/L cyanidin-3-glucoside). The highest and lowest amount of TSS in regions under study was 15.72 and 34.9%, respectively. GGE biplot method used for studying effect of different regions on chemical and morphological properties. IR56 accession had highest amount of beta-carotene according to the polygon. The highest content of and total anthocyanin obtained from IR51. Pearson’s coefficients showed that fruit weight had significantly correlation with fruit flesh. Fruit length had significantly correlation with fruit width. Also Total soluble carbohydrate correlation with total anthocyanin and TSS was significant. Obtained results from this study could be used in the future breeding program of dog rose.