جستجوی مقالات مرتبط با کلیدواژه "ویژگی های کمی و کیفی" در نشریات گروه "زراعت"

The effect of foliar application of zinc sulfate and seaweed on qualitative and quantitative characteristics of local Kermanshah cantaloupe (Cucumis melo L., Cantalupensis Group) cv. Kalak was investigated. After sowing seeds in the field, the plants were sprayed in three stages including the 4-6 leaf stage, flowering and after the fruit set. The experiment had a factorial design based on the randomized complete block design with 9 treatments including various concentrations of zinc sulfate (0.5 and 1 g L-1) and seaweed (0.5 and 1 g L-1) and was repeated three times. The results of analysis of variance showed that zinc sulfate at 0.5 g L-1 and seaweed at 1 g L-1 had significant effects on the weight, length and diameter of the fruit, the weight of the fresh fruit, fresh and dry weight of the plant, and fruit firmness. The highest amount of vitamin C was observed in zinc sulfate at 1 g L-1 and seaweed at 0.5 g L-1. The highest total seed weight was obtained in zinc sulfate at 0.5 g L-1 and seaweed at 1 g L-1. Foliar application of zinc sulfate and seaweed did not have a significant effect on total soluble solids (TSS). However, zinc sulfate at 0.5 g L-1 increased the amount of titratable acid (TA) in the fruit juice. The highest amount of the TSS/TA ratio of the fruits was observed in application of seaweed at 1 g L-1. Overall, the findings of the present study indicated that simultaneous application of zinc sulfate and low concentrations of seaweed extract has a significant effect on many qualitative and quantitative characteristics of “Kalak” Cantaloupe and can be recommended as a biofertilizer.

Almond (Prunus dulcis [Webb] D. A. Mill) is an economically important species of genus Prunus. Self-incompatibility and low quality fruit are the most important limitative problems for fruit set and cropping in almond tree. In this study، 50 almond genotypes obtained from crossing between some superior self-incompatible local genotypes and ''Tuono'' (self-compatible cultivar) were analyzed with fluorescence microscope method. Results showed that 11 genotypes were self-compatible، three genotypes were questionable and others were recognized as self-incompatible. To evaluate morphological diversity، twenty-two vegetative and generative characteristics were evaluated. Results indicated that all characteristics were significantly different among examined genotypes. Factor analysis divided genotypes into eight factors that covered 91. 04from total variance. Results Factor analysis indicate characteristics such as: kernel wrinkles، nut size، kernel length، shell thickness، shell pattern and nut diameter had highest effect on genotypes diversity. Finally، genotypes 6، 15، 20، 25 and 46 were introduced as superior ones based on their nut weight and kernel characteristics. Genotype No. 15 and 25 was self-compatible in addition of having good fruit and nut characteristics.

Maze is widely cultivated in many countries due to capabilities such as adaptation to various climatic conditions, drought tolerance, high performance, ability to be in different frequencies, full adoption of mechanization and the multiple uses. In order to investigate the application effect of mycorrhiza fungus and various amounts of the phosphorus fertilizer levels on the quantitative and qualitative features of Zea mays Single Cross Karoon, an experiment was conducted as factorial in randomized complete blocks design with two levels of mycorrhiza fungus application and non-application and four amounts of phosphorus fertilize with three replications, in north of Khouzestan in 2013 cropping year. The obtained results of variance analysis showed that through adding mycorrhiza fungus the grain yield, biological yield, bush harvesting index, grain number in row and bush height, at one percent level and the traits like bush height, one thousand-grain weight and grain protein was significant at five percent level and row number in grain was not affected by mycorrhiza. Also, A2 treatment (the use of mycorrhizal inoculation) showed higher yield with the average protein percent 10/83 comparing to treatment A1 (lack of using mycorrhizal inoculation) with average 10/59. The effect of phosphate treatment on bush height, one thousand-grain weight, grain yield, grain number, biological yield, bush harvesting index and protein was significant at one percent level and was not significant at row number in maize.

This study aimed at determining the most suitable spacing (plant and ridge) in the conventional melon cultivation in Varamin region in order to achieve higher yield and marketable fruits. The experiment was conducted as a strip split plot statistical design with three replications, in two years, at the Agricultural Research Center of Varamin, Iran. The main factor (vertical) included four plant spacing on rows (20, 40, 60, and 80 cm) which were applied randomly perpendicular to each block. The horizontal factor included two row distances (width of the ridge) of 1.5 and 3 m, which were implemented as strips across the blocks. The sub-factor included two varieties of melon (yellow melon of Eyvanekey and Khatoony of Mashhad). Two-year results from the statistical analysis of traits revealed that the studied cultivars had statistical differences in fruit yield and percentage of soluble solids of fruits. The Yellow Eyvanekey cultivar, with fruit yield of 38.7 ton/ha and 9.68% soluble solids, was superior to Khatoony cultivar. The highest fruit yield, percentage of soluble solids and average fruit weight for Eyvanekey cultivar was obtained in the planting pattern of 3×0.8 m. But for the Khatoony cultivar, the plant spacing could be reduced to 60 cm. Therefore, for this cultivar, the 3×0.6 m planting pattern is recommendable. In general, Eyvanekey cultivar was superior to Khatoony in terms of quantitative and qualitative traits related to fruit yield.